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VulnerabilityPublished Updated

CVE-2026-76560: Red Hat Directory Server 11.5 E4S for RHEL 8 · Incorrect Authorization

Affects Red Hat Directory Server 11.5 E4S for RHEL 8Source CVE Database V5

0

Not known to be exploited · CVSS 7.5 High.

Data as of 26 Oct 2026, 10:12 UTC

CVSS 3.1 base score
7.5High
How severe the flaw is on the 0–10 CVSS scale.
EPSS
0.5% chance of exploitation in 30 days – higher than 46% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
CISA SSVC
Exploitation
No evidence of active exploitation and no public proof of concept
Automatable
Attackers can reliably automate steps 1–4 of the kill chain
Technical impact
Limited control over the software or limited information exposure

CISA SSVC assessment, 2026-09-08.

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

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 7 Sep 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponised: 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 26 Oct 2026.

What to do

Affected software

ProductAffectedFixed in
Red Hat Directory Server 11.5 E4S for RHEL 8redhat-ds:11Affected–Fixed in–
Red Hat Directory Server 11.7 E4S for RHEL 8redhat-ds:11Affected–Fixed in–
Red Hat Directory Server 11.9 for RHEL 8redhat-ds:11Affected–Fixed in–
Red Hat Directory Server 12.2 E4S for RHEL 9redhat-ds:12Affected–Fixed in–
Red Hat Directory Server 12.4 E4S for RHEL 9redhat-ds:12Affected–Fixed in–
Red Hat Enterprise Linux 10389-ds-baseAffected–Fixed in–

AI-suggested

A security update addressing this vulnerability is available from Red Hat as part of the 389-ds-base package update. Users should apply the official Red Hat patch as detailed in Red Hat Advisory RHSA-2026:64771. No alternative mitigations or workarounds are specified in the advisory. Systems should be updated promptly to remediate this issue.

Description

CVE-2026-76560 is a vulnerability in 389 Directory Server where the SELFDN ACI bind-rule evaluator incorrectly treats an anonymous LDAP client's empty bind DN as matching an empty stored attribute value. This flaw allows an unauthenticated client to bypass access controls intended to restrict certain operations to specific authenticated users, potentially enabling unauthorized modifications to directory entries.

References

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