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VulnerabilityPublished Updated

CVE-2026-11610: 389ds 389-ds-base · Heap-based Buffer Overflow

Affects 389ds 389-ds-baseSource CVE Database V5

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Not known to be exploited · CVSS 8.8 High.

Data as of 5 Nov 2026, 00:16 UTC

CVSS 3.1 base score
8.8High
How severe the flaw is on the 0–10 CVSS scale.

Thin evidence

One scorer or none
CVSS scores by source
CNA (redhat)CVSS 3.18.8
EPSS
0.4% chance of exploitation in 30 days – higher than 42% 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 cannot reliably automate steps 1–4 of the kill chain
Technical impact
Total control over the software or total information disclosure

CISA SSVC assessment, 2026-07-08.

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

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 7 Jul 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 5 Nov 2026.

What to do

Affected software

ProductAffectedFixed in
389ds389-ds-baseAffected
  • >=1.3.2 <=3.3.0
Fixed in–
GitHub389-ds-basepkg:github/389-ds-baseOther threatsAffected
  • >=1.3.2 <=3.3.0
Fixed in–

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

AI-suggested

A security update fixing this vulnerability is available from Red Hat as detailed in advisory RHSA-2026:36195. Users of affected versions (>=1.3.2 <=3.3.0) should apply the vendor-provided patches promptly. No additional mitigation steps are specified or required beyond applying the official fix.

Description

CVE-2026-11610 is a heap-based buffer overflow vulnerability in the SASL I/O layer of 389 Directory Server (389-ds-base). After a successful SASL bind with integrity protection, an authenticated attacker can send an oversized LDAP UNBIND packet that overflows a 512-byte heap buffer, causing a denial of service (server crash). This flaw affects versions from 1.3.2 through 3.3.0 and has existed since approximately 2013. It is exploitable by any authenticated user with a valid Kerberos ticket or service account in FreeIPA and Red Hat Identity Management deployments. A security update fixing this issue is available from Red Hat.

References

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