CVE catalog

CVE-2026-16560

A heap-buffer-overflow flaw was found in Directory Server (389-ds-base). When a DN contains a legacy-quoted value, the server won't close the heap allocation allowing another call to refer to the same

[CVE catalog]

Severity: Medium · CVSS 5.3CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Published: Jul 22, 2026, 12:00:00 PM UTC
Source: [NVD] · [CVE record]
EPSS: 0.40% · Oct 25, 2026

Vulnerable and fixed packages

Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.

Distribution	Package	Release	Version	Status
Debian	389-ds-base	sid	`3.3.1-3`	vulnerable
Debian	389-ds-base	trixie	`3.1.2+dfsg1-1+deb13u1`	vulnerable
Debian	389-ds-base	bookworm	`2.3.1+dfsg1-1+deb12u1`	vulnerable

Fixed-version evidence

Distribution	Package	Type	Release	Fixed version	Urgency	Origin	Bugs
Debian	389-ds-base	source	sid	`(unfixed)`	not yet assigned	Not reported	[1142849]
Debian	389-ds-base	source	trixie	`(unfixed)`	not yet assigned	Not reported	[1142849]
Debian	389-ds-base	source	bookworm	`(unfixed)`	not yet assigned	Not reported	[1142849]

[Debian bug #1142849]

OpenFactory catalog packages

[Debian 12 (Bookworm)]

[389-ds]Affected
Source package: [389-ds-base]
Details (2)
- 2.3.1+dfsg1-1+deb12u1 · all · bookworm
  Affected
  nvd · 389-ds-base · debian · bookworm; nvd · 389-ds-base · debian · 12
- 2.3.1+dfsg1-1+deb12u1 · all · bookworm
  Affected
  nvd · 389-ds-base · debian · bookworm; nvd · 389-ds-base · debian · 12
[389-ds-base]Affected
Details (2)
- 2.3.1+dfsg1-1+deb12u1 · amd64 · bookworm
  Affected
  nvd · 389-ds-base · debian · bookworm; nvd · 389-ds-base · debian · 12
- 2.3.1+dfsg1-1+deb12u1 · arm64 · bookworm
  Affected
  nvd · 389-ds-base · debian · bookworm; nvd · 389-ds-base · debian · 12
[389-ds-base-dev]Affected
Source package: [389-ds-base]
Details (2)
- 2.3.1+dfsg1-1+deb12u1 · amd64 · bookworm
  Affected
  nvd · 389-ds-base · debian · bookworm; nvd · 389-ds-base · debian · 12
- 2.3.1+dfsg1-1+deb12u1 · arm64 · bookworm
  Affected
  nvd · 389-ds-base · debian · bookworm; nvd · 389-ds-base · debian · 12
[389-ds-base-libs]Affected
Source package: [389-ds-base]
Details (2)
- 2.3.1+dfsg1-1+deb12u1 · amd64 · bookworm
  Affected
  nvd · 389-ds-base · debian · bookworm; nvd · 389-ds-base · debian · 12
- 2.3.1+dfsg1-1+deb12u1 · arm64 · bookworm
  Affected
  nvd · 389-ds-base · debian · bookworm; nvd · 389-ds-base · debian · 12
[cockpit-389-ds]Affected
Source package: [389-ds-base]
Details (2)
- 2.3.1+dfsg1-1+deb12u1 · all · bookworm
  Affected
  nvd · 389-ds-base · debian · bookworm; nvd · 389-ds-base · debian · 12
- 2.3.1+dfsg1-1+deb12u1 · all · bookworm
  Affected
  nvd · 389-ds-base · debian · bookworm; nvd · 389-ds-base · debian · 12
[python3-lib389]Affected
Source package: [389-ds-base]
Details (2)
- 2.3.1+dfsg1-1+deb12u1 · all · bookworm
  Affected
  nvd · 389-ds-base · debian · bookworm; nvd · 389-ds-base · debian · 12
- 2.3.1+dfsg1-1+deb12u1 · all · bookworm
  Affected
  nvd · 389-ds-base · debian · bookworm; nvd · 389-ds-base · debian · 12

[Debian 13 (Trixie)]

[389-ds]Affected
Source package: [389-ds-base]
Details (2)
- 3.1.2+dfsg1-1+deb13u1 · all · trixie
  Affected
  nvd · 389-ds-base · debian · 13
- 3.1.2+dfsg1-1+deb13u1 · all · trixie
  Affected
  nvd · 389-ds-base · debian · 13
[389-ds-base]Affected
Details (2)
- 3.1.2+dfsg1-1+deb13u1 · amd64 · trixie
  Affected
  nvd · 389-ds-base · debian · 13
- 3.1.2+dfsg1-1+deb13u1 · arm64 · trixie
  Affected
  nvd · 389-ds-base · debian · 13
[389-ds-base-dev]Affected
Source package: [389-ds-base]
Details (2)
- 3.1.2+dfsg1-1+deb13u1 · amd64 · trixie
  Affected
  nvd · 389-ds-base · debian · 13
- 3.1.2+dfsg1-1+deb13u1 · arm64 · trixie
  Affected
  nvd · 389-ds-base · debian · 13
[389-ds-base-libs]Affected
Source package: [389-ds-base]
Details (2)
- 3.1.2+dfsg1-1+deb13u1 · amd64 · trixie
  Affected
  nvd · 389-ds-base · debian · 13
- 3.1.2+dfsg1-1+deb13u1 · arm64 · trixie
  Affected
  nvd · 389-ds-base · debian · 13
[cockpit-389-ds]Affected
Source package: [389-ds-base]
Details (2)
- 3.1.2+dfsg1-1+deb13u1 · all · trixie
  Affected
  nvd · 389-ds-base · debian · 13
- 3.1.2+dfsg1-1+deb13u1 · all · trixie
  Affected
  nvd · 389-ds-base · debian · 13
[python3-lib389]Affected
Source package: [389-ds-base]
Details (2)
- 3.1.2+dfsg1-1+deb13u1 · all · trixie
  Affected
  nvd · 389-ds-base · debian · 13
- 3.1.2+dfsg1-1+deb13u1 · all · trixie
  Affected
  nvd · 389-ds-base · debian · 13

Observed: Oct 23, 2026, 9:43:35 PM UTC

References

[Debian Security Tracker] · [FIRST EPSS] · [National Vulnerability Database (NVD)] · [OSV Package Vulnerability Database] · [Red Hat security advisories and VEX]