CVE & CISA-KEV CatalogNVD
CVE-2026-66806
HIGH5.5
CVSS v3
Description
Off-by-one error in Microsoft Office Word allows an unauthorized attacker to disclose information locally.
How to fix
Remediation Available
Microsoft Word 2016Microsoft
Install:KB5002901Microsoft
registry.redhat.io/multiclusterRocky
Fixed in:engine/work-rhel9@sha256:555ac12dcb11d15ec223822664e3454fb8e3a06f09c0d25b7193cb7a1ff59692_ppc64leRHSA-2026:59579
Fixed in:engine/registration-rhel9@sha256:8150bf32b5f7161dffb2e2a8f5e686b019d8ac0583e845bf8eb1627d5384f587_arm64RHSA-2026:59579
Fixed in:engine/registration-rhel9@sha256:c139df708e124b69c4cec06b0443dd505f8aff40cb6b189c210fdbf5b1496ced_amd64RHSA-2026:59579
Fixed in:engine/placement-rhel9@sha256:6d3b8edc882840daec5ec846b154dbd026c6afdaa1e84e1a47320db8ac152674_arm64RHSA-2026:59579
Fixed in:engine/discovery-rhel9@sha256:c3279b4d3d58e56e59871885038b3635e9f66a24489ffa674fe221ec75896253_arm64RHSA-2026:59579
Fixed in:engine/registration-rhel9@sha256:f8b875024df221d7ab2a570d79c5b8cbd72f4ba022b1e11968654edbcda1d2ec_s390xRHSA-2026:59579
Fixed in:engine/placement-rhel9@sha256:b7d2390f5af76fbc2c7c4506ba56086c996e34aa05018ffc16c8b68413c510f6_amd64RHSA-2026:59579
Fixed in:engine/registration-rhel9@sha256:84a0adc55241c2cadb27a5d9936b9963bc88bed86c58f7aeeaf5c91d4dc1f21e_ppc64leRHSA-2026:59579
registry.redhat.io/multiclusterRed Hat / RHEL
Fixed in:engine/hive-rhel9@sha256:79f94d4c3a18bf405efe777334897a3790a6c3173e95904292451ff802b0518f_arm64RHSA-2026:59579
Fixed in:engine/work-rhel9@sha256:90189f64abe1950f61d7d221c7c51dc6c474f7d57fbea83941d71a2926e09612_arm64RHSA-2026:59579
Fixed in:engine/hive-rhel9@sha256:0b2c11e01d932107e2a7f942c4ce1f001bcd6fad0524ffb89a0c8fdf015c6187_amd64RHSA-2026:59579
Fixed in:engine/placement-rhel9@sha256:c94cc4e68f89216e2a88c8ab5b91ddbf0839aa2e3b807fc64ad63a862cac768e_s390xRHSA-2026:59579
Fixed in:engine/placement-rhel9@sha256:d292c79e74426fe748e6a642b5a293e412ea6aa62aaf9a857717080c94f80c83_ppc64leRHSA-2026:59579
Fixed in:engine/registration-rhel9@sha256:f8b875024df221d7ab2a570d79c5b8cbd72f4ba022b1e11968654edbcda1d2ec_s390xRHSA-2026:59579
Fixed in:engine/registration-rhel9@sha256:8150bf32b5f7161dffb2e2a8f5e686b019d8ac0583e845bf8eb1627d5384f587_arm64RHSA-2026:59579
Fixed in:engine/hive-rhel9@sha256:862102b41aaf123d3381c9fd847f9181b044c0c0cd464e7a2d8ba7571189fd1c_s390xRHSA-2026:59579
registry.redhat.io/multicluster-engine/addonRocky
Fixed in:manager-rhel9@sha256:478425331df9f329a5ecdeab3c308720a5332b442524863509c56e9114ec04cc_s390xRHSA-2026:59579
Fixed in:manager-rhel9@sha256:89c0187bbae1316dc2b339188399d35056da419ca5681c3c6b6c9ada8426ff5d_amd64RHSA-2026:59579
Fixed in:manager-rhel9@sha256:0d668fb3c0766c121dcb2fe1c50b0e650f3e5619212cfd6c5b8606cbf2f46ed5_ppc64leRHSA-2026:59579
Fixed in:manager-rhel9@sha256:82c5f7aa025b65ea5a717ac6b4fbdb14cdaa70d1836f3f1e18c0bba7892d06c5_arm64RHSA-2026:59579
registry.redhat.io/multicluster-engine/addonRed Hat / RHEL
Fixed in:manager-rhel9@sha256:478425331df9f329a5ecdeab3c308720a5332b442524863509c56e9114ec04cc_s390xRHSA-2026:59579
Fixed in:manager-rhel9@sha256:82c5f7aa025b65ea5a717ac6b4fbdb14cdaa70d1836f3f1e18c0bba7892d06c5_arm64RHSA-2026:59579
Fixed in:manager-rhel9@sha256:0d668fb3c0766c121dcb2fe1c50b0e650f3e5619212cfd6c5b8606cbf2f46ed5_ppc64leRHSA-2026:59579
Fixed in:manager-rhel9@sha256:89c0187bbae1316dc2b339188399d35056da419ca5681c3c6b6c9ada8426ff5d_amd64RHSA-2026:59579
registry.redhat.io/multicluster-engine/backplaneRocky
Fixed in:rhel9-operator@sha256:a105d84c9cf07ebb22f551364b014ffe53e7e8d3d12960a1626f626ba0ef1ab2_s390xRHSA-2026:59579
Fixed in:rhel9-operator@sha256:37f3af61b10a2983d1708cd6fca79b3a3442eb50341f988095099d6f1099aa2f_ppc64leRHSA-2026:59579
Fixed in:rhel9-operator@sha256:967fe2291e1c5dc13969ef6a8d24b570cd42fbb9fb62e5ad176e024f6c63b46c_amd64RHSA-2026:59579
Fixed in:rhel9-operator@sha256:d907df873261c35a9d7501d16f78cceeff34bb7df4ade3789cbc044186c3424a_arm64RHSA-2026:59579
registry.redhat.io/multicluster-engine/backplaneRed Hat / RHEL
Fixed in:rhel9-operator@sha256:d907df873261c35a9d7501d16f78cceeff34bb7df4ade3789cbc044186c3424a_arm64RHSA-2026:59579
Fixed in:rhel9-operator@sha256:37f3af61b10a2983d1708cd6fca79b3a3442eb50341f988095099d6f1099aa2f_ppc64leRHSA-2026:59579
Fixed in:rhel9-operator@sha256:a105d84c9cf07ebb22f551364b014ffe53e7e8d3d12960a1626f626ba0ef1ab2_s390xRHSA-2026:59579
Fixed in:rhel9-operator@sha256:967fe2291e1c5dc13969ef6a8d24b570cd42fbb9fb62e5ad176e024f6c63b46c_amd64RHSA-2026:59579
registry.redhat.io/multicluster-engine/clusterRocky
Fixed in:proxy-rhel9@sha256:ed1ecda1d66cac338199d74b778c43e9715ec601368217c96df255e4edddf52a_amd64RHSA-2026:59579
Fixed in:proxy-rhel9@sha256:8a679bcade442faed33eb06403151a8a3a45640c006af14364b89eb3d7c18135_ppc64leRHSA-2026:59579
Fixed in:proxy-rhel9@sha256:b4ed89ac61d739fd6579bc32386c5ca2a698aa3bf52ca0507f743b83316026e8_arm64RHSA-2026:59579
Fixed in:proxy-rhel9@sha256:82a8076d032b2f199ecdeaff6caeca3779efe606f9acb3a18823f2b3039c6dc4_s390xRHSA-2026:59579
registry.redhat.io/multicluster-engine/clusterRed Hat / RHEL
Fixed in:proxy-rhel9@sha256:ed1ecda1d66cac338199d74b778c43e9715ec601368217c96df255e4edddf52a_amd64RHSA-2026:59579
Fixed in:proxy-rhel9@sha256:8a679bcade442faed33eb06403151a8a3a45640c006af14364b89eb3d7c18135_ppc64leRHSA-2026:59579
Fixed in:proxy-rhel9@sha256:82a8076d032b2f199ecdeaff6caeca3779efe606f9acb3a18823f2b3039c6dc4_s390xRHSA-2026:59579
Fixed in:proxy-rhel9@sha256:b4ed89ac61d739fd6579bc32386c5ca2a698aa3bf52ca0507f743b83316026e8_arm64RHSA-2026:59579
registry.redhat.io/multicluster-engine/cluster-api-providerRed Hat / RHEL
Fixed in:agent-rhel9@sha256:dca052e5d128114b2312cd1013f3fa6942a266106a1499edb755b145dfd159bd_arm64RHSA-2026:59579
Fixed in:agent-rhel9@sha256:069dc1611a272eb60a61c3c8e2c7b94d557357e1cdd84c990dc7b6c795f2d8f0_amd64RHSA-2026:59579
Fixed in:kubevirt-rhel9@sha256:05b939fdaafd6c018ac80bfdf2e0f334a22fd2561dc0ff58bd348de88d02df60_ppc64leRHSA-2026:59579
Fixed in:kubevirt-rhel9@sha256:58e91670a23798dcb9c84cfb3d8c3c6515c46eb60b74425626d312c234bc90a6_s390xRHSA-2026:59579
Fixed in:kubevirt-rhel9@sha256:5065a8825698759f8433fbb34e6d996c78e92026883470d18bc79b33c3980f76_arm64RHSA-2026:59579
Fixed in:agent-rhel9@sha256:80308f8416965c93372202ca402f493a489e57dbb926dda975eb631528aa047d_ppc64leRHSA-2026:59579
Fixed in:agent-rhel9@sha256:7462188ca4e55cd0ada1e258636c873e7e47b8c7c2209590494377afd9d12baa_s390xRHSA-2026:59579
Fixed in:kubevirt-rhel9@sha256:6c2df804fba80d6d6c7ac5b4e2199f4da9119eb1956695194bf8103787d26a19_amd64RHSA-2026:59579
registry.redhat.io/multicluster-engine/cluster-api-providerRocky
Fixed in:kubevirt-rhel9@sha256:58e91670a23798dcb9c84cfb3d8c3c6515c46eb60b74425626d312c234bc90a6_s390xRHSA-2026:59579
Fixed in:agent-rhel9@sha256:069dc1611a272eb60a61c3c8e2c7b94d557357e1cdd84c990dc7b6c795f2d8f0_amd64RHSA-2026:59579
Fixed in:agent-rhel9@sha256:80308f8416965c93372202ca402f493a489e57dbb926dda975eb631528aa047d_ppc64leRHSA-2026:59579
Fixed in:agent-rhel9@sha256:dca052e5d128114b2312cd1013f3fa6942a266106a1499edb755b145dfd159bd_arm64RHSA-2026:59579
Fixed in:kubevirt-rhel9@sha256:05b939fdaafd6c018ac80bfdf2e0f334a22fd2561dc0ff58bd348de88d02df60_ppc64leRHSA-2026:59579
Fixed in:kubevirt-rhel9@sha256:5065a8825698759f8433fbb34e6d996c78e92026883470d18bc79b33c3980f76_arm64RHSA-2026:59579
Fixed in:kubevirt-rhel9@sha256:6c2df804fba80d6d6c7ac5b4e2199f4da9119eb1956695194bf8103787d26a19_amd64RHSA-2026:59579
Fixed in:agent-rhel9@sha256:7462188ca4e55cd0ada1e258636c873e7e47b8c7c2209590494377afd9d12baa_s390xRHSA-2026:59579
registry.redhat.io/multicluster-engine/cluster-curatorRed Hat / RHEL
Fixed in:controller-rhel9@sha256:95c9022b4f4afeef1fb7e45e52ef8c656e6aad20a1a7152ebeb7513d7fd90f90_s390xRHSA-2026:59579
Fixed in:controller-rhel9@sha256:22e29cd4be20eee653f291036994e8387bf058ba8cb34d7268d6b313fda1fa73_ppc64leRHSA-2026:59579
Fixed in:controller-rhel9@sha256:515e1b8d4d85bb49f87cdd857ab193707cd27c50492661d3fcfe7d39618807e9_amd64RHSA-2026:59579
Fixed in:controller-rhel9@sha256:1ac9661a442222942a9a085be2c492325517626281d555f89cb5494cb8d0640f_arm64RHSA-2026:59579
registry.redhat.io/multicluster-engine/cluster-curatorRocky
Fixed in:controller-rhel9@sha256:1ac9661a442222942a9a085be2c492325517626281d555f89cb5494cb8d0640f_arm64RHSA-2026:59579
Fixed in:controller-rhel9@sha256:95c9022b4f4afeef1fb7e45e52ef8c656e6aad20a1a7152ebeb7513d7fd90f90_s390xRHSA-2026:59579
Fixed in:controller-rhel9@sha256:515e1b8d4d85bb49f87cdd857ab193707cd27c50492661d3fcfe7d39618807e9_amd64RHSA-2026:59579
Fixed in:controller-rhel9@sha256:22e29cd4be20eee653f291036994e8387bf058ba8cb34d7268d6b313fda1fa73_ppc64leRHSA-2026:59579
registry.redhat.io/multicluster-engine/cluster-image-setRocky
Fixed in:controller-rhel9@sha256:a8132b6ad654d7babe77051158a9f82c5f1e27bdff7eb38ac5f307891ed8d413_ppc64leRHSA-2026:59579
Fixed in:controller-rhel9@sha256:26a3c6e4c02c695a19357b12d62cf349ad9237291b2b779ffef0cff1af75a7ca_s390xRHSA-2026:59579
Fixed in:controller-rhel9@sha256:6afb4e5f3dd0a89347aef6570f8b8d2ced1db67b9171e22a1b7e091c2aeeda80_amd64RHSA-2026:59579
Fixed in:controller-rhel9@sha256:a5f96e3ba60f2a639c5c94282445b85ea77a0b5c509011170ce2e07afbc0d071_arm64RHSA-2026:59579
registry.redhat.io/multicluster-engine/cluster-image-setRed Hat / RHEL
Fixed in:controller-rhel9@sha256:a8132b6ad654d7babe77051158a9f82c5f1e27bdff7eb38ac5f307891ed8d413_ppc64leRHSA-2026:59579
Fixed in:controller-rhel9@sha256:a5f96e3ba60f2a639c5c94282445b85ea77a0b5c509011170ce2e07afbc0d071_arm64RHSA-2026:59579
Fixed in:controller-rhel9@sha256:26a3c6e4c02c695a19357b12d62cf349ad9237291b2b779ffef0cff1af75a7ca_s390xRHSA-2026:59579
Fixed in:controller-rhel9@sha256:6afb4e5f3dd0a89347aef6570f8b8d2ced1db67b9171e22a1b7e091c2aeeda80_amd64RHSA-2026:59579
registry.redhat.io/multicluster-engine/cluster-proxyRed Hat / RHEL
Fixed in:addon-rhel9@sha256:d5dcc70669da9641e5e5e560d5f30baa70f29b2d9210cf92ce53930aa085698b_amd64RHSA-2026:59579
Fixed in:addon-rhel9@sha256:e82c36f361b8eb03b4c991823fa975f81bc29b41a044e0441998e3922bb84623_s390xRHSA-2026:59579
Fixed in:addon-rhel9@sha256:059ffd9e76ed4a946e85b3c7ea3e51de4c4510def6fefd118a7ef28cc2a29981_arm64RHSA-2026:59579
Fixed in:addon-rhel9@sha256:6a07e49a882b5c7242896fd8ba83d82ece6a4ae6b8b2c0116398410552c87a5b_ppc64leRHSA-2026:59579
registry.redhat.io/multicluster-engine/cluster-proxyRocky
Fixed in:addon-rhel9@sha256:059ffd9e76ed4a946e85b3c7ea3e51de4c4510def6fefd118a7ef28cc2a29981_arm64RHSA-2026:59579
Fixed in:addon-rhel9@sha256:d5dcc70669da9641e5e5e560d5f30baa70f29b2d9210cf92ce53930aa085698b_amd64RHSA-2026:59579
Fixed in:addon-rhel9@sha256:e82c36f361b8eb03b4c991823fa975f81bc29b41a044e0441998e3922bb84623_s390xRHSA-2026:59579
Fixed in:addon-rhel9@sha256:6a07e49a882b5c7242896fd8ba83d82ece6a4ae6b8b2c0116398410552c87a5b_ppc64leRHSA-2026:59579
registry.redhat.io/multicluster-engine/clusterclaimsRed Hat / RHEL
Fixed in:controller-rhel9@sha256:397436d12ac747fdc502d412827d62f464b6e1646ae450aa62d72568800af8ac_ppc64leRHSA-2026:59579
Fixed in:controller-rhel9@sha256:9e46982f2db62f99b2410fe6639230cf9133617ff79a01266ae2ec2169dddc31_arm64RHSA-2026:59579
Fixed in:controller-rhel9@sha256:85e38c6db2cd8334193ca48b9e9337c1f0040e4612d40d3f4b623cfd93fd5aed_s390xRHSA-2026:59579
Fixed in:controller-rhel9@sha256:daf8858158bbc24d0078ce4d7a217b7ab014df8e54a9c906f7c2b0e78e521cf4_amd64RHSA-2026:59579
registry.redhat.io/multicluster-engine/clusterclaimsRocky
Fixed in:controller-rhel9@sha256:85e38c6db2cd8334193ca48b9e9337c1f0040e4612d40d3f4b623cfd93fd5aed_s390xRHSA-2026:59579
Fixed in:controller-rhel9@sha256:daf8858158bbc24d0078ce4d7a217b7ab014df8e54a9c906f7c2b0e78e521cf4_amd64RHSA-2026:59579
Fixed in:controller-rhel9@sha256:9e46982f2db62f99b2410fe6639230cf9133617ff79a01266ae2ec2169dddc31_arm64RHSA-2026:59579
Fixed in:controller-rhel9@sha256:397436d12ac747fdc502d412827d62f464b6e1646ae450aa62d72568800af8ac_ppc64leRHSA-2026:59579
registry.redhat.io/multicluster-engine/clusterlifecycle-stateRed Hat / RHEL
Fixed in:metrics-rhel9@sha256:df0789b5a0fbd0f3bd2b638439267ab76d4f83ea6d6a47d913165e316c7e839b_ppc64leRHSA-2026:59579
Fixed in:metrics-rhel9@sha256:7355f52a14d471987cd4a82bc88ec0ddd7427333fa4c868edae00a67dfbaad6b_arm64RHSA-2026:59579
Fixed in:metrics-rhel9@sha256:0c404dc6f49d61bc8cef0f598f7791c104712330813d87841b278b56e74eb3c3_amd64RHSA-2026:59579
Fixed in:metrics-rhel9@sha256:0eade8656ee0509b6522696f9974a59d1ab2c7990ee346b37dcfa23c3bb5c0e3_s390xRHSA-2026:59579
registry.redhat.io/multicluster-engine/clusterlifecycle-stateRocky
Fixed in:metrics-rhel9@sha256:0eade8656ee0509b6522696f9974a59d1ab2c7990ee346b37dcfa23c3bb5c0e3_s390xRHSA-2026:59579
Fixed in:metrics-rhel9@sha256:df0789b5a0fbd0f3bd2b638439267ab76d4f83ea6d6a47d913165e316c7e839b_ppc64leRHSA-2026:59579
Fixed in:metrics-rhel9@sha256:7355f52a14d471987cd4a82bc88ec0ddd7427333fa4c868edae00a67dfbaad6b_arm64RHSA-2026:59579
Fixed in:metrics-rhel9@sha256:0c404dc6f49d61bc8cef0f598f7791c104712330813d87841b278b56e74eb3c3_amd64RHSA-2026:59579
registry.redhat.io/multicluster-engine/consoleRed Hat / RHEL
Fixed in:mce-rhel9@sha256:89582af16958a59fa835177ba86fb188e48883f47f758aad5731967572d6fbc8_amd64RHSA-2026:59579
Fixed in:mce-rhel9@sha256:e1291921d2a43efb307f721e7cbe2059e396ac518b787bd3216268e939e6a498_arm64RHSA-2026:59579
Fixed in:mce-rhel9@sha256:d9462b7e8e1ea92347f210640de7676e8ab55d53d4fbc1319de4f2c24488fe41_s390xRHSA-2026:59579
Fixed in:mce-rhel9@sha256:c4304142e1220d457779e705e5efa949a702ea625bee79bdb760c48bbc20b974_ppc64leRHSA-2026:59579
registry.redhat.io/multicluster-engine/consoleRocky
Fixed in:mce-rhel9@sha256:c4304142e1220d457779e705e5efa949a702ea625bee79bdb760c48bbc20b974_ppc64leRHSA-2026:59579
Fixed in:mce-rhel9@sha256:e1291921d2a43efb307f721e7cbe2059e396ac518b787bd3216268e939e6a498_arm64RHSA-2026:59579
Fixed in:mce-rhel9@sha256:89582af16958a59fa835177ba86fb188e48883f47f758aad5731967572d6fbc8_amd64RHSA-2026:59579
Fixed in:mce-rhel9@sha256:d9462b7e8e1ea92347f210640de7676e8ab55d53d4fbc1319de4f2c24488fe41_s390xRHSA-2026:59579
registry.redhat.io/multicluster-engine/hypershiftRed Hat / RHEL
Fixed in:cli-rhel9@sha256:d30ecea7b67038189294473f3eb31f1fc783966844b72cb08cc9c93a825a5176_ppc64leRHSA-2026:59579
Fixed in:rhel9-operator@sha256:60bdff311818508f83c994be29e758bf18107669f39981558eb649951d323813_ppc64leRHSA-2026:59579
Fixed in:rhel9-operator@sha256:3b1d7e3a36432cf0626b1e477218d0de41f7d6b444846dec406d280b97e6a7eb_s390xRHSA-2026:59579
Fixed in:rhel9-operator@sha256:6b8e678873ae2d313d20995b66f6b96903f3e47182b7cc702c28c2345b87cc5b_arm64RHSA-2026:59579
Fixed in:cli-rhel9@sha256:c4331c7233585cffb9bdc4d6578536d280f29960296a6215f1095a9c754af0e8_s390xRHSA-2026:59579
Fixed in:rhel9-operator@sha256:1ebde666bd0af45242a048767b68dbee8bce3a7858b2d08f0705a17847b9cd14_amd64RHSA-2026:59579
Fixed in:cli-rhel9@sha256:6527af67c3bd763a7e464b7ef5901ceed286f8a9dfa7a5a39aac87c8ba21c011_arm64RHSA-2026:59579
Fixed in:cli-rhel9@sha256:8aeb95d0f1efde5516648e2577c9dea532e36f05ff318e0ebd5961d40377e83e_amd64RHSA-2026:59579
registry.redhat.io/multicluster-engine/hypershiftRocky
Fixed in:cli-rhel9@sha256:8aeb95d0f1efde5516648e2577c9dea532e36f05ff318e0ebd5961d40377e83e_amd64RHSA-2026:59579
Fixed in:cli-rhel9@sha256:d30ecea7b67038189294473f3eb31f1fc783966844b72cb08cc9c93a825a5176_ppc64leRHSA-2026:59579
Fixed in:rhel9-operator@sha256:60bdff311818508f83c994be29e758bf18107669f39981558eb649951d323813_ppc64leRHSA-2026:59579
Fixed in:cli-rhel9@sha256:c4331c7233585cffb9bdc4d6578536d280f29960296a6215f1095a9c754af0e8_s390xRHSA-2026:59579
Fixed in:rhel9-operator@sha256:6b8e678873ae2d313d20995b66f6b96903f3e47182b7cc702c28c2345b87cc5b_arm64RHSA-2026:59579
Fixed in:rhel9-operator@sha256:1ebde666bd0af45242a048767b68dbee8bce3a7858b2d08f0705a17847b9cd14_amd64RHSA-2026:59579
Fixed in:rhel9-operator@sha256:3b1d7e3a36432cf0626b1e477218d0de41f7d6b444846dec406d280b97e6a7eb_s390xRHSA-2026:59579
Fixed in:cli-rhel9@sha256:6527af67c3bd763a7e464b7ef5901ceed286f8a9dfa7a5a39aac87c8ba21c011_arm64RHSA-2026:59579
registry.redhat.io/multicluster-engine/hypershift-addonRed Hat / RHEL
Fixed in:rhel9-operator@sha256:5f1410e6947e65ea9f374027b3ccceb3625a03a1256972c3211ed41d108a658a_arm64RHSA-2026:59579
Fixed in:rhel9-operator@sha256:305f8fc32782c433c1a7687b57131b71b71e33ef6df2ecc87130bf3fca709ff6_ppc64leRHSA-2026:59579
Fixed in:rhel9-operator@sha256:a6659cae93e54344de37ccbb150fa43e4e1fe572b9f970d97889e4355076d585_amd64RHSA-2026:59579
Fixed in:rhel9-operator@sha256:891e54f7df9f621e566d99b67b4d3946636ab91736405cfbd6ec06f20483a680_s390xRHSA-2026:59579
registry.redhat.io/multicluster-engine/hypershift-addonRocky
Fixed in:rhel9-operator@sha256:5f1410e6947e65ea9f374027b3ccceb3625a03a1256972c3211ed41d108a658a_arm64RHSA-2026:59579
Fixed in:rhel9-operator@sha256:a6659cae93e54344de37ccbb150fa43e4e1fe572b9f970d97889e4355076d585_amd64RHSA-2026:59579
Fixed in:rhel9-operator@sha256:305f8fc32782c433c1a7687b57131b71b71e33ef6df2ecc87130bf3fca709ff6_ppc64leRHSA-2026:59579
Fixed in:rhel9-operator@sha256:891e54f7df9f621e566d99b67b4d3946636ab91736405cfbd6ec06f20483a680_s390xRHSA-2026:59579
registry.redhat.io/multicluster-engine/image-basedRocky
Fixed in:install-rhel9@sha256:a54fe7b1e9e1c96ac33521a0489bd89fde1f83f667bd401aa6c5a1deb1ef9b23_amd64RHSA-2026:59579
Fixed in:install-rhel9@sha256:8003b9d889d9d3286843b736cb8e08caab71939d93697220bf3a80dee898adde_ppc64leRHSA-2026:59579
Fixed in:install-rhel9@sha256:12599c9ce7fac399b1d836d01567be46a2ee92e5007f9abb7af33d7b9925197b_arm64RHSA-2026:59579
Fixed in:install-rhel9@sha256:2bdc944415b12580bcb0aa15f029cc3f99585a50ad71dc84965beb4ec4d56af2_s390xRHSA-2026:59579
registry.redhat.io/multicluster-engine/image-basedRed Hat / RHEL
Fixed in:install-rhel9@sha256:12599c9ce7fac399b1d836d01567be46a2ee92e5007f9abb7af33d7b9925197b_arm64RHSA-2026:59579
Fixed in:install-rhel9@sha256:a54fe7b1e9e1c96ac33521a0489bd89fde1f83f667bd401aa6c5a1deb1ef9b23_amd64RHSA-2026:59579
Fixed in:install-rhel9@sha256:2bdc944415b12580bcb0aa15f029cc3f99585a50ad71dc84965beb4ec4d56af2_s390xRHSA-2026:59579
Fixed in:install-rhel9@sha256:8003b9d889d9d3286843b736cb8e08caab71939d93697220bf3a80dee898adde_ppc64leRHSA-2026:59579
registry.redhat.io/multicluster-engine/kube-rbac-proxyRed Hat / RHEL
Fixed in:mce-rhel9@sha256:1214d7f59825931d7c8db0a71a4a1939ab9a807ad1e493715d305e7b14671e7a_ppc64leRHSA-2026:59579
Fixed in:mce-rhel9@sha256:d9014f71c64e1341dcbf3b4d2c1d049565bf3359db595547a77c9715aa648748_arm64RHSA-2026:59579
Fixed in:mce-rhel9@sha256:b7c8fd6e654a9ca888cb3f38c27da3dbae8812fc49d51a7d60f5b743f3f3493b_amd64RHSA-2026:59579
Fixed in:mce-rhel9@sha256:2cb491fa43b3e993ff471d96c81795fd4ddc7fc913a426e6d806cb919804cca8_s390xRHSA-2026:59579
This vulnerability affects an unusually large number of packages. The highest-confidence fixes are shown above; the full list is longer. Check the referenced advisories for complete coverage.
TridentStack Control can deploy fixes like this automatically across your Windows, macOS, and Linux fleet. See how it works
Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.
CVSS v3 Vector
Exploitability
Attack VectorLocal
Attack ComplexityLow
Privileges RequiredNone
User InteractionRequired
ScopeUnchanged
Impact
ConfidentialityHigh
IntegrityNone
AvailabilityNone
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C
Exploit Intelligence
0.31%probability of exploitation in 30 days
23rdpercentile
Low risk: more likely to be exploited than 23% of all known CVEs.
References
Vendor Advisory1
Related Vulnerabilities
Other CWE-125 (Out-of-bounds Read) vulnerabilities, ordered by exploit likelihood. View all
| CVE | Severity | CVSS | EPSS | Exploited | Fix |
|---|---|---|---|---|---|
| CVE-2014-0160 | High | 7.5 | 100% | KEV | Fix |
| CVE-2025-5777 | High | 7.5 | 100% | KEV + Ransom | Fix |
| CVE-2021-4034 | High | 7.8 | 95% | KEV + Ransom | Fix |
| CVE-2020-8794 | Critical | 9.8 | 89% | - | Fix |
| CVE-2023-49285 | High | 8.6 | 89% | - | Fix |
| CVE-2023-21769 | High | 7.5 | 89% | - | Fix |
Common questions
How do I fix CVE-2026-66806?
Published advisories record a fix for 111 affected products. The "How to fix" section on this page lists the fixed version and source advisory for each one, so apply the entry matching what you actually run.
Is CVE-2026-66806 being actively exploited?
Not that we know of. CVE-2026-66806 is not in the CISA Known Exploited Vulnerabilities catalog. Its EPSS score of 0.31% is the estimated probability that it will be exploited in the next 30 days. That is higher than 23% of all scored CVEs.
How severe is CVE-2026-66806?
CVE-2026-66806 has a CVSS v3 base score of 5.5, rated important. CVSS rates the technical impact if the vulnerability is exploited, not how likely that is, so weigh it alongside the exploit-prediction score when you decide what to patch first.
What does CVE-2026-66806 affect?
Published advisories record a fix for Microsoft Word 2016 (Microsoft), registry.redhat.io/multicluster (Rocky), registry.redhat.io/multicluster (Red Hat / RHEL), registry.redhat.io/multicluster-engine/addon (Rocky), and 107 more. Only products with a sourced advisory are listed, so treat this as what we can cite rather than a complete inventory.
Embed a live status badge for CVE-2026-66806
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<a href="https://tridentstack.com/cve/CVE-2026-66806"><img src="https://tridentstack.com/cve/badge/CVE-2026-66806.svg" alt="CVE-2026-66806"></a>Find and fix vulnerabilities across your fleet
TridentStack Control continuously scans your Windows, macOS, and Linux fleet for known vulnerabilities, prioritizes them by severity and active exploitation, and patches them automatically.
This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-08-14.