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VulnerabilityPublished Updated

CVE-2025-14905: Red Hat Directory Server 11.5 E4S for RHEL 8 389-ds-base · Heap-based Buffer Overflow

Affects Red Hat Directory Server 11.5 E4S for RHEL 8 389-ds-baseSource CVE Database V5

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Not known to be exploited · CVSS 7.2 High : upgrade the Red Hat redhat/389-ds-base package to 10.2 or 9.8 soon.

Data as of 29 Oct 2026, 19:04 UTC

CVSS 3.1 base score
7.2High
How severe the flaw is on the 0–10 CVSS scale.
EPSS
1.2% chance of exploitation in 30 days – higher than 70% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch
Available – fixed in 10.2, 9.8
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 23 Feb 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

Upgrade the Red Hat redhat/389-ds-base package to 10.2 or 9.8.

Affected software

ProductAffectedFixed in
Red Hatredhat/389-ds-basepkg:rpm/redhat/389-ds-baseOther threatsAffected
  • >=9.0.0 <9.8
  • >=10.0.0 <10.2
Fixed in
  • 9.8
  • 10.2

Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.

AI-suggested

Red Hat has released official security updates that fix this vulnerability. Users should apply the updated 389-ds-base packages provided in Red Hat Enterprise Linux 9.8 and 10.2 or later as detailed in advisories RHSA-2026:3189 and RHSA-2026:3208. Refer to Red Hat's official article https://access.redhat.com/articles/11258 for update instructions. No additional mitigations are required once the update is applied.

Description

A flaw was found in the 389-ds-base server. A heap buffer overflow vulnerability exists in the `schema_attr_enum_callback` function within the `schema.c` file. This occurs because the code incorrectly calculates the buffer size by summing alias string lengths without accounting for additional formatting characters. When a large number of aliases are processed, this oversight can lead to a heap overflow, potentially allowing a remote attacker to cause a Denial of Service (DoS) or achieve Remote Code Execution (RCE).

References

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