🛡️ CVE-2025-4207 — postgresql

🟡 CVSS 5.9 — Medium ✅ No Known Exploit NVD
5.9
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

PostgreSQL GB18030 encoding validation can read one byte past end of allocation for text that fails validation

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.

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

CVE-2025-4207 is recorded against 2 packages.

  • postgresql
  • unknown

Timeline and source

Published on 10 May 2025 and last revised on 20 May 2025. No public exploit is currently recorded for this entry. Record sourced from NVD.

References

www.openwall.com (Web)
lists.debian.org (Web)
nvd.nist.gov (Web)
www.postgresql.org (Web)

CVE-2025-4207 on other distributions

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

Details

Severity MEDIUM
CVSS Score 5.9
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 NVD
Published 2025-05-10
Updated 2026-08-12
Modified 2025-05-20
Fix URL N/A

Affected Packages

Software From version Fixed in
postgresql — —
unknown — —

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