CVE-2026-68743: Red Hat Enterprise Linux 10 · Out-of-bounds Read
Affects Red Hat Enterprise Linux 10Source CVE Database V5
Mentioned vulnerabilities
Not known to be exploited · CVSS 5.5 Medium.
Data as of 1 Nov 2026, 22:58 UTC
- EPSS
- 0.1% chance of exploitation in 30 days – higher than 2% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:HExploitation evidence
Disclosed: evidence found.
CVE published 4 Aug 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by 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 1 Nov 2026.
What to do
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| Red Hat Enterprise Linux 10sssd | Affected– | Fixed in– |
| Red Hat Enterprise Linux 6sssd | Affected– | Fixed in– |
| Red Hat Enterprise Linux 7sssd | Affected– | Fixed in– |
| Red Hat Enterprise Linux 8sssd | Affected– | Fixed in– |
| Red Hat Enterprise Linux 9sssd | Affected– | Fixed in– |
| Red Hat OpenShift Container Platform 4openshift/ose-rhel-coreos-8 | Affected– | Fixed in– |
AI-suggested
Currently, no mitigation or patch is available that meets Red Hat's criteria for ease of use, deployment, applicability, or stability. The vulnerability can only be triggered by a local attacker with access to the PAM responder socket using protocol v1 requests, which are not used by the default PAM client. Users should monitor Red Hat's advisory page for updates on fixes or mitigations. Until a fix is released, limiting local access to the PAM responder socket may reduce risk.
Description
A flaw was found in SSSD. The extract_authtok_v1() function in the PAM responder does not validate the auth_token_length field against the remaining buffer size before processing. A local attacker can exploit this via a crafted protocol v1 request to the PAM responder socket, causing an out-of-bounds read and process crash, resulting in a denial of service.