CVE & CISA-KEV Catalog

CVE-2025-12390

MEDIUM
6.0
CVSS v3
NVD

Description

A flaw was found in Keycloak. In Keycloak where a user can accidentally get access to another user's session if both use the same device and browser. This happens because Keycloak sometimes reuses session identifiers and doesn’t clean up properly during logout when browser cookies are missing. As a result, one user may receive tokens that belong to another user.

CWE-384

How to fix

Remediation Available
rhbk/keycloakRed Hat / RHEL
Fixed in:rhel9@sha256:9993b5ca357dd6bfdcaf6ca207dc2640686e9dc3a1383504ec35ece20336d55c_ppc64leRHSA-2025:21371
Fixed in:rhel9-operator@sha256:cec95b5c4ee797c24b1e1b7b4153aa739b706ad4421fd1d2dfd3eea27e314e1f_ppc64leRHSA-2025:21371
Fixed in:rhel9@sha256:670c505d4614d99916a958daaf432f8bbac8584e3be95e7b79b6be49833d8213_arm64RHSA-2025:21371
Fixed in:rhel9-operator@sha256:30a472b0c9cfa3f9d60942d45f7eb5ef9ef2a4e80665bcf0d179727c6404d792_arm64RHSA-2025:21371
Fixed in:rhel9@sha256:3cbef8b1d1a0794f5f5f13630f4db9c210f21a8949329d33ee8873a33a48f1dd_amd64RHSA-2025:21371
Fixed in:operator-bundle@sha256:50577bde141dae173b700c21f83b2bf66b0f7a32b76b4b75e43cc4da249f3dad_amd64RHSA-2025:21371
Fixed in:rhel9-operator@sha256:e1c3d0ef47ab51ce48553dcb6be4a6db8ac7dd8ba82e9ec15e97cd753aeaa9eb_amd64RHSA-2025:21371
Fixed in:rhel9@sha256:175daaf28bfa2e07cdf5a337bdf247de519c03c7df4a17367f8f1e5f40a469ea_s390xRHSA-2025:21371
Fixed in:rhel9-operator@sha256:30abecc1365b4f510403ff4bc244de1a9735e02f8b9a665fc77f2aec2ee5a025_s390xRHSA-2025:21371
Fixed in:rhel9@sha256:527c210541d8669a7b08029be54f411512f14fe887d92569801e8801f8c001f5_amd64RHSA-2025:22088
Fixed in:operator-bundle@sha256:dbebd9c370278ca9745863823ea05be8026400f70ada7650d65ef381841bfc5b_amd64RHSA-2025:22088
Fixed in:rhel9-operator@sha256:b9525ea17de357c938972cc8c6cf78ba1fc1902901e1759908e9fcb2c0e72aed_amd64RHSA-2025:22088
Fixed in:rhel9@sha256:8c52f172dd64c5d4a4078a3d9af16612151607332eea832c6ded4600d71c68ca_ppc64leRHSA-2025:22088
Fixed in:rhel9-operator@sha256:d7602888e037d4d5bba73f896e4537721130464ef82406c31a445701f015f93b_ppc64leRHSA-2025:22088
Fixed in:rhel9@sha256:31618f217a7d9a08945106f507dd0ca02b3850d183c4915311203423204a4c03_s390xRHSA-2025:22088
Fixed in:rhel9-operator@sha256:56c72c8a7c8fc6dc429272f50d1ca7d2c1f3c20819f86c314ecd16df7067f348_s390xRHSA-2025:22088
Fixed in:rhel9@sha256:c9da93981df5435ded6a22b5a36876c4a10f66ebc4d4f91fdd9e2084e6b60a2f_arm64RHSA-2025:22088
Fixed in:rhel9-operator@sha256:57d64e64c4b64a802faf366d4e156d01b04c2fbb3d866b123ac4c2f82968a46f_arm64RHSA-2025:22088
rhbk/keycloakRocky
Fixed in:rhel9@sha256:9993b5ca357dd6bfdcaf6ca207dc2640686e9dc3a1383504ec35ece20336d55c_ppc64leRHSA-2025:21371
Fixed in:rhel9-operator@sha256:cec95b5c4ee797c24b1e1b7b4153aa739b706ad4421fd1d2dfd3eea27e314e1f_ppc64leRHSA-2025:21371
Fixed in:rhel9@sha256:670c505d4614d99916a958daaf432f8bbac8584e3be95e7b79b6be49833d8213_arm64RHSA-2025:21371
Fixed in:rhel9-operator@sha256:30a472b0c9cfa3f9d60942d45f7eb5ef9ef2a4e80665bcf0d179727c6404d792_arm64RHSA-2025:21371
Fixed in:rhel9@sha256:3cbef8b1d1a0794f5f5f13630f4db9c210f21a8949329d33ee8873a33a48f1dd_amd64RHSA-2025:21371
Fixed in:operator-bundle@sha256:50577bde141dae173b700c21f83b2bf66b0f7a32b76b4b75e43cc4da249f3dad_amd64RHSA-2025:21371
Fixed in:rhel9-operator@sha256:e1c3d0ef47ab51ce48553dcb6be4a6db8ac7dd8ba82e9ec15e97cd753aeaa9eb_amd64RHSA-2025:21371
Fixed in:rhel9@sha256:175daaf28bfa2e07cdf5a337bdf247de519c03c7df4a17367f8f1e5f40a469ea_s390xRHSA-2025:21371
Fixed in:rhel9-operator@sha256:30abecc1365b4f510403ff4bc244de1a9735e02f8b9a665fc77f2aec2ee5a025_s390xRHSA-2025:21371
Fixed in:rhel9@sha256:527c210541d8669a7b08029be54f411512f14fe887d92569801e8801f8c001f5_amd64RHSA-2025:22088
Fixed in:operator-bundle@sha256:dbebd9c370278ca9745863823ea05be8026400f70ada7650d65ef381841bfc5b_amd64RHSA-2025:22088
Fixed in:rhel9-operator@sha256:b9525ea17de357c938972cc8c6cf78ba1fc1902901e1759908e9fcb2c0e72aed_amd64RHSA-2025:22088
Fixed in:rhel9@sha256:8c52f172dd64c5d4a4078a3d9af16612151607332eea832c6ded4600d71c68ca_ppc64leRHSA-2025:22088
Fixed in:rhel9-operator@sha256:d7602888e037d4d5bba73f896e4537721130464ef82406c31a445701f015f93b_ppc64leRHSA-2025:22088
Fixed in:rhel9@sha256:31618f217a7d9a08945106f507dd0ca02b3850d183c4915311203423204a4c03_s390xRHSA-2025:22088
Fixed in:rhel9-operator@sha256:56c72c8a7c8fc6dc429272f50d1ca7d2c1f3c20819f86c314ecd16df7067f348_s390xRHSA-2025:22088
Fixed in:rhel9@sha256:c9da93981df5435ded6a22b5a36876c4a10f66ebc4d4f91fdd9e2084e6b60a2f_arm64RHSA-2025:22088
Fixed in:rhel9-operator@sha256:57d64e64c4b64a802faf366d4e156d01b04c2fbb3d866b123ac4c2f82968a46f_arm64RHSA-2025:22088

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 ComplexityHigh
Privileges RequiredLow
User InteractionRequired
ScopeUnchanged

Impact

ConfidentialityHigh
IntegrityHigh
AvailabilityNone

CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:N

Exploit Intelligence

0.13%probability of exploitation in 30 days
3rdpercentile

Low risk: more likely to be exploited than 3% of all known CVEs.

References

Related Vulnerabilities

Other CWE-384 vulnerabilities, ordered by exploit likelihood. View all

CVESeverityCVSSEPSSExploitedFix
CVE-2018-11714Critical9.837%--
CVE-2018-18925Critical9.832%--
CVE-2019-12258High7.523%-Fix
CVE-2018-17199High7.520%-Fix
CVE-2019-10008High8.820%--
CVE-2024-50339Medium5.320%-Fix
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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 2025-12-19.