CVE & CISA-KEV CatalogNVD
CVE-2026-42508
HIGHEPSS 94th pctl9.1
CVSS v3
Description
Previously, a revoked 'SignatureKey' belonging to a CA was not correctly checked for revocation. Now, both the 'key' and 'key.SignatureKey' are checked for @revoked.
How to fix
Remediation Available
golang-go.cryptoDebian
Fixed in:1:0.52.0-1CVE-2026-42508
aardvark-dns-2:1.0.1Rocky
Fixed in:40.module+el8.6.0+24209+25a14987.x86_64::container-tools:rhel8RHSA-2026:51288
aardvark-dns-2:1.0.1Red Hat / RHEL
Fixed in:40.module+el8.6.0+24209+25a14987.x86_64::container-tools:rhel8RHSA-2026:51288
aardvark-dns-2:1.10.1Red Hat / RHEL
Fixed in:2.module+el8.10.0+24482+e50f4e4f.aarch64::container-tools:rhel8RHSA-2026:35833
Fixed in:2.module+el8.10.0+24482+e50f4e4f.x86_64::container-tools:rhel8RHSA-2026:35833
Fixed in:2.module+el8.10.0+24482+e50f4e4f.ppc64le::container-tools:rhel8RHSA-2026:35833
Fixed in:2.module+el8.10.0+24482+e50f4e4f.s390x::container-tools:rhel8RHSA-2026:35833
Fixed in:2.module+el8.10.0+24482+e50f4e4f.src::container-tools:rhel8RHSA-2026:35833
aardvark-dns-2:1.10.1Rocky
Fixed in:2.module+el8.10.0+24482+e50f4e4f.ppc64le::container-tools:rhel8RHSA-2026:35833
Fixed in:2.module+el8.10.0+24482+e50f4e4f.src::container-tools:rhel8RHSA-2026:35833
Fixed in:2.module+el8.10.0+24482+e50f4e4f.s390x::container-tools:rhel8RHSA-2026:35833
Fixed in:2.module+el8.10.0+24482+e50f4e4f.aarch64::container-tools:rhel8RHSA-2026:35833
Fixed in:2.module+el8.10.0+24482+e50f4e4f.x86_64::container-tools:rhel8RHSA-2026:35833
aardvark-dns-2:1.5.0Red Hat / RHEL
Fixed in:2.module+el8.8.0+23884+2031fc78.src::container-tools:rhel8RHSA-2026:49944
Fixed in:2.module+el8.8.0+23884+2031fc78.ppc64le::container-tools:rhel8RHSA-2026:49944
Fixed in:2.module+el8.8.0+23884+2031fc78.x86_64::container-tools:rhel8RHSA-2026:49944
aardvark-dns-2:1.5.0Rocky
Fixed in:2.module+el8.8.0+23884+2031fc78.ppc64le::container-tools:rhel8RHSA-2026:49944
Fixed in:2.module+el8.8.0+23884+2031fc78.x86_64::container-tools:rhel8RHSA-2026:49944
Fixed in:2.module+el8.8.0+23884+2031fc78.src::container-tools:rhel8RHSA-2026:49944
buildah-1:1.26.11Rocky
Fixed in:1.module+el8.6.0+24590+db5ff31b.3.x86_64::container-tools:rhel8RHSA-2026:51288
Fixed in:1.module+el8.6.0+24590+db5ff31b.3.src::container-tools:rhel8RHSA-2026:51288
buildah-1:1.26.11Red Hat / RHEL
Fixed in:1.module+el8.6.0+24590+db5ff31b.3.src::container-tools:rhel8RHSA-2026:51288
Fixed in:1.module+el8.6.0+24590+db5ff31b.3.x86_64::container-tools:rhel8RHSA-2026:51288
buildah-1:1.29.8Rocky
Fixed in:1.module+el8.8.0+24545+b713e821.ppc64le::container-tools:rhel8RHSA-2026:49944
Fixed in:1.module+el8.8.0+24545+b713e821.src::container-tools:rhel8RHSA-2026:49944
Fixed in:1.module+el8.8.0+24545+b713e821.x86_64::container-tools:rhel8RHSA-2026:49944
buildah-1:1.29.8Red Hat / RHEL
Fixed in:1.module+el8.8.0+24545+b713e821.ppc64le::container-tools:rhel8RHSA-2026:49944
Fixed in:1.module+el8.8.0+24545+b713e821.x86_64::container-tools:rhel8RHSA-2026:49944
Fixed in:1.module+el8.8.0+24545+b713e821.src::container-tools:rhel8RHSA-2026:49944
buildah-2:1.33.14Red Hat / RHEL
Fixed in:4.module+el8.10.0+24482+e50f4e4f.aarch64::container-tools:rhel8RHSA-2026:35833
Fixed in:4.module+el8.10.0+24482+e50f4e4f.src::container-tools:rhel8RHSA-2026:35833
Fixed in:4.module+el8.10.0+24482+e50f4e4f.s390x::container-tools:rhel8RHSA-2026:35833
Fixed in:4.module+el8.10.0+24482+e50f4e4f.ppc64le::container-tools:rhel8RHSA-2026:35833
Fixed in:4.module+el8.10.0+24482+e50f4e4f.x86_64::container-tools:rhel8RHSA-2026:35833
buildah-2:1.33.14Rocky
Fixed in:4.module+el8.10.0+24482+e50f4e4f.aarch64::container-tools:rhel8RHSA-2026:35833
Fixed in:4.module+el8.10.0+24482+e50f4e4f.ppc64le::container-tools:rhel8RHSA-2026:35833
Fixed in:4.module+el8.10.0+24482+e50f4e4f.x86_64::container-tools:rhel8RHSA-2026:35833
Fixed in:4.module+el8.10.0+24482+e50f4e4f.src::container-tools:rhel8RHSA-2026:35833
Fixed in:4.module+el8.10.0+24482+e50f4e4f.s390x::container-tools:rhel8RHSA-2026:35833
buildah-debuginfo-1:1.26.11Red Hat / RHEL
Fixed in:1.module+el8.6.0+24590+db5ff31b.3.x86_64::container-tools:rhel8RHSA-2026:51288
buildah-debuginfo-1:1.26.11Rocky
Fixed in:1.module+el8.6.0+24590+db5ff31b.3.x86_64::container-tools:rhel8RHSA-2026:51288
buildah-debuginfo-1:1.29.8Rocky
Fixed in:1.module+el8.8.0+24545+b713e821.ppc64le::container-tools:rhel8RHSA-2026:49944
Fixed in:1.module+el8.8.0+24545+b713e821.x86_64::container-tools:rhel8RHSA-2026:49944
buildah-debuginfo-1:1.29.8Red Hat / RHEL
Fixed in:1.module+el8.8.0+24545+b713e821.x86_64::container-tools:rhel8RHSA-2026:49944
Fixed in:1.module+el8.8.0+24545+b713e821.ppc64le::container-tools:rhel8RHSA-2026:49944
buildah-debuginfo-2:1.33.14Red Hat / RHEL
Fixed in:4.module+el8.10.0+24482+e50f4e4f.s390x::container-tools:rhel8RHSA-2026:35833
Fixed in:4.module+el8.10.0+24482+e50f4e4f.ppc64le::container-tools:rhel8RHSA-2026:35833
Fixed in:4.module+el8.10.0+24482+e50f4e4f.aarch64::container-tools:rhel8RHSA-2026:35833
Fixed in:4.module+el8.10.0+24482+e50f4e4f.x86_64::container-tools:rhel8RHSA-2026:35833
buildah-debuginfo-2:1.33.14Rocky
Fixed in:4.module+el8.10.0+24482+e50f4e4f.s390x::container-tools:rhel8RHSA-2026:35833
Fixed in:4.module+el8.10.0+24482+e50f4e4f.aarch64::container-tools:rhel8RHSA-2026:35833
Fixed in:4.module+el8.10.0+24482+e50f4e4f.ppc64le::container-tools:rhel8RHSA-2026:35833
Fixed in:4.module+el8.10.0+24482+e50f4e4f.x86_64::container-tools:rhel8RHSA-2026:35833
buildah-debugsource-1:1.26.11Red Hat / RHEL
Fixed in:1.module+el8.6.0+24590+db5ff31b.3.x86_64::container-tools:rhel8RHSA-2026:51288
buildah-debugsource-1:1.26.11Rocky
Fixed in:1.module+el8.6.0+24590+db5ff31b.3.x86_64::container-tools:rhel8RHSA-2026:51288
buildah-debugsource-1:1.29.8Rocky
Fixed in:1.module+el8.8.0+24545+b713e821.ppc64le::container-tools:rhel8RHSA-2026:49944
Fixed in:1.module+el8.8.0+24545+b713e821.x86_64::container-tools:rhel8RHSA-2026:49944
buildah-debugsource-1:1.29.8Red Hat / RHEL
Fixed in:1.module+el8.8.0+24545+b713e821.x86_64::container-tools:rhel8RHSA-2026:49944
Fixed in:1.module+el8.8.0+24545+b713e821.ppc64le::container-tools:rhel8RHSA-2026:49944
buildah-debugsource-2:1.33.14Red Hat / RHEL
Fixed in:4.module+el8.10.0+24482+e50f4e4f.s390x::container-tools:rhel8RHSA-2026:35833
Fixed in:4.module+el8.10.0+24482+e50f4e4f.x86_64::container-tools:rhel8RHSA-2026:35833
Fixed in:4.module+el8.10.0+24482+e50f4e4f.aarch64::container-tools:rhel8RHSA-2026:35833
Fixed in:4.module+el8.10.0+24482+e50f4e4f.ppc64le::container-tools:rhel8RHSA-2026:35833
buildah-debugsource-2:1.33.14Rocky
Fixed in:4.module+el8.10.0+24482+e50f4e4f.ppc64le::container-tools:rhel8RHSA-2026:35833
Fixed in:4.module+el8.10.0+24482+e50f4e4f.aarch64::container-tools:rhel8RHSA-2026:35833
Fixed in:4.module+el8.10.0+24482+e50f4e4f.x86_64::container-tools:rhel8RHSA-2026:35833
Fixed in:4.module+el8.10.0+24482+e50f4e4f.s390x::container-tools:rhel8RHSA-2026:35833
buildah-tests-1:1.26.11Red Hat / RHEL
Fixed in:1.module+el8.6.0+24590+db5ff31b.3.x86_64::container-tools:rhel8RHSA-2026:51288
buildah-tests-1:1.26.11Rocky
Fixed in:1.module+el8.6.0+24590+db5ff31b.3.x86_64::container-tools:rhel8RHSA-2026:51288
buildah-tests-1:1.29.8Rocky
Fixed in:1.module+el8.8.0+24545+b713e821.x86_64::container-tools:rhel8RHSA-2026:49944
Fixed in:1.module+el8.8.0+24545+b713e821.ppc64le::container-tools:rhel8RHSA-2026:49944
buildah-tests-1:1.29.8Red Hat / RHEL
Fixed in:1.module+el8.8.0+24545+b713e821.ppc64le::container-tools:rhel8RHSA-2026:49944
Fixed in:1.module+el8.8.0+24545+b713e821.x86_64::container-tools:rhel8RHSA-2026:49944
buildah-tests-2:1.33.14Rocky
Fixed in:4.module+el8.10.0+24482+e50f4e4f.ppc64le::container-tools:rhel8RHSA-2026:35833
Fixed in:4.module+el8.10.0+24482+e50f4e4f.aarch64::container-tools:rhel8RHSA-2026:35833
Fixed in:4.module+el8.10.0+24482+e50f4e4f.s390x::container-tools:rhel8RHSA-2026:35833
Fixed in:4.module+el8.10.0+24482+e50f4e4f.x86_64::container-tools:rhel8RHSA-2026:35833
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 VectorNetwork
Attack ComplexityLow
Privileges RequiredNone
User InteractionNone
ScopeUnchanged
Impact
ConfidentialityHigh
IntegrityHigh
AvailabilityNone
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N/E:U
Exploit Intelligence
7.31%probability of exploitation in 30 days
94thpercentile
High risk: more likely to be exploited than 94% of all known CVEs.
References
Vendor Advisory1
Mailing List1
Other references40
- access.redhat.com
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- access.redhat.com
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- access.redhat.com
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- access.redhat.com
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- access.redhat.com
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- access.redhat.com
- access.redhat.com
- access.redhat.com
- access.redhat.com
- access.redhat.com
- access.redhat.com
- access.redhat.com
- access.redhat.com
- access.redhat.com
- bugzilla.redhat.com
- security.access.redhat.com
Related Vulnerabilities
Other CWE-295 (Improper Certificate Validation) vulnerabilities, ordered by exploit likelihood. View all
| CVE | Severity | CVSS | EPSS | Exploited | Fix |
|---|---|---|---|---|---|
| CVE-2015-4000 | Low | 3.7 | 100% | - | Fix |
| CVE-2020-0601 | High | 8.1 | 89% | KEV | Fix |
| CVE-2009-3555 | Critical | 9.8 | 87% | - | Fix |
| CVE-2022-26923 | High | 8.8 | 84% | KEV | Fix |
| CVE-2023-27823 | Critical | 9.8 | 53% | - | - |
| CVE-2022-42979 | High | 8.8 | 24% | - | - |
Common questions
How do I fix CVE-2026-42508?
Published advisories record a fix for 433 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-2026-42508 being actively exploited?
Not that we know of. CVE-2026-42508 is not in the CISA Known Exploited Vulnerabilities catalog. Its EPSS score of 7.3% is the estimated probability that it will be exploited in the next 30 days. That is higher than 94% of all scored CVEs.
How severe is CVE-2026-42508?
CVE-2026-42508 has a CVSS v3 base score of 9.1, 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-2026-42508 affect?
Published advisories record a fix for golang-go.crypto (Debian), aardvark-dns-2:1.0.1 (Rocky), aardvark-dns-2:1.0.1 (Red Hat / RHEL), aardvark-dns-2:1.10.1 (Red Hat / RHEL), and 429 more. The list on this page is capped, so there may be more.
Embed a live status badge for CVE-2026-42508
Markdown
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<a href="https://tridentstack.com/cve/CVE-2026-42508"><img src="https://tridentstack.com/cve/badge/CVE-2026-42508.svg" alt="CVE-2026-42508"></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 2026-08-28.