🛡️ CVE-2025-4207 on Debian — postgresql-13

⚪ Unknown ✅ No Known Exploit OSV

N/A

CVSS Score

0 Low4 Medium7 High9 Critical10

Description

Buffer over-read in PostgreSQL GB18030 encoding validation allows a database input provider to achieve temporary denial of service on platforms where a 1-byte over-read can elicit process termination. This affects the database server and also libpq. Versions before PostgreSQL 17.5, 16.9, 15.13, 14.18, and 13.21 are affected.

Distribution advisory

This page covers CVE-2025-4207 as tracked by Debian, for the package postgresql-13. The fix is available in version 13.21-0+deb11u1; earlier versions remain affected.

How this vulnerability can be exploited

This issue can be reached over the network, attack complexity is high, an attacker needs no privileges on the target. No user interaction is required. The scope is unchanged, so the impact stays within the vulnerable component. Rated impact: confidentiality none, integrity none, availability high.

Affected software

DEBIAN-CVE-2025-4207 is recorded against 3 packages.

postgresql-13 (fixed in 13.21-0+deb11u1)
postgresql-15 (fixed in 15.13-0+deb12u1)
postgresql-17 (fixed in 17.5-1)

Timeline and source

Published on 8 May 2025 and last revised on 4 August 2026. No public exploit is currently recorded for this entry. Record sourced from OSV.

References

security-tracker.debian.org (Advisory)

CVE-2025-4207 on other distributions

Each distribution ships its own build and its own fixed version. Pick the one you run:

Alpine BellSoft Base record Ubuntu

Details

Severity Unknown

CVSS Score N/A

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

CWE N/A

Public Exploit ✅ No

Source OSV

Published 2025-05-08

Updated 2026-08-11

Modified 2026-08-04

Fix URL N/A

Affected Packages

Software	From version	Fixed in
postgresql-13	—	13.21-0+deb11u1
postgresql-15	—	15.13-0+deb12u1
postgresql-17	—	17.5-1

References

ADVISORY https://security-tracker.debian.org/tracker/CVE-2025-4207

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