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VulnerabilityPublished Updated

CVE-2026-90994: Red Hat Enterprise Linux 10 · Out-of-bounds Read

Affects Red Hat Enterprise Linux 10Source CVE Database V5

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Not known to be exploited · CVSS 4.0 Medium.

Data as of 30 Oct 2026, 06:59 UTC

CVSS 3.1 base score
4.0Medium
How severe the flaw is on the 0–10 CVSS scale.
EPSS
0.1% chance of exploitation in 30 days – higher than 6% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 14 Sep 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 29 Oct 2026.

What to do

Affected software

ProductAffectedFixed in
Red Hat Enterprise Linux 10sssdAffected–Fixed in–
Red Hat Enterprise Linux 6sssdAffected–Fixed in–
Red Hat Enterprise Linux 7sssdAffected–Fixed in–
Red Hat Enterprise Linux 8sssdAffected–Fixed in–
Red Hat Enterprise Linux 9sssdAffected–Fixed in–
Red Hat OpenShift Container Platform 4openshift/ose-rhel-coreos-8Affected–Fixed in–

AI-suggested

Until a patch is available, restrict local access to the PAM responder's UNIX socket to trusted users only to mitigate exploitation risk.

Description

CVE-2026-90994 is a medium severity vulnerability in Red Hat Enterprise Linux 10's sssd PAM responder. A local client with access to the PAM responder's UNIX socket can trigger an out-of-bounds read by sending an empty or truncated PAM request body when negotiating protocol v1. This may cause the PAM responder to terminate or restart, resulting in a local denial of service.

References

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