CVE-2026-115221 Red Hat CVE debrief

Who should care

System administrators and security teams managing Red Hat Enterprise Linux environments with FreeIPA should assess exposure and prioritize patching. This includes teams responsible for certificate management, security monitoring, and incident response. Additionally, operators of FreeIPA deployments should review and update their configurations to prevent similar issues in the future.

Why it matters

CVE-2026-115221 allows authenticated hosts to retrieve and revoke digital certificates assigned to other users or services in FreeIPA. System administrators and security teams managing Red Hat Enterprise Linux environments with FreeIPA should assess exposure and prioritize patching.

• Potential disruption of services due to unauthorized certificate revocation
• Need for verification of certificate ownership and access controls
• Potential for lateral movement or privilege escalation

Technical summary

FreeIPA uses subject cn as proof of certificate ownership, allowing an authenticated host to disrupt services by revoking certificates belonging to other entities. This occurs because FreeIPA verifies ownership solely by matching the host name to the certificate's subject Common Name (CN), without confirming actual ownership in the directory service. A flaw in FreeIPA allows an authenticated host to retrieve and revoke digital certificates assigned to other users or services due to improper authorization checks. System administrators and security teams managing Red Hat Enterprise Linux environments with FreeIPA should assess exposure and prioritize patching.

Defensive priority

Medium-priority patching and verification recommended for affected Red Hat Enterprise Linux versions.

Recommended defensive actions

• Patch affected Red Hat Enterprise Linux versions
• Verify certificate ownership and access controls
• Monitor for unauthorized certificate revocation
• Review compensating controls for exposed systems while remediation is scheduled and verified
• Check relevant monitoring, detection, and logs for exposed assets that need extra review
• Track exceptions, retest remediated assets, and close the item only after evidence is documented
• Confirm whether affected product deployments exist in managed environments and assign an owner for follow-up

Evidence notes

The CVE Program record and NVD vulnerability detail provide official information on the flaw. Red Hat has provided a security advisory for this issue. Evidence is limited to public sources and may not reflect the full scope or impact of the vulnerability. Defenders should verify affected systems and apply patches or mitigations as recommended by the vendor.

Sources and references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.