Medium severity · published May 8, 2025
CVE-2025-4207
PostgreSQL GB18030 encoding validation can read one byte past end of allocation for text that fails validation
5.9
CVSS
0.8%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack vector
Network
Complexity
High
Privileges
None
User interaction
None
Confidentiality
None
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.8% · higher than 55% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
PO
PostgreSQL · PostgreSQL
17 before 17.5; 16 before 16.9; 15 before 15.13; 14 before 14.18; before 13.21 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2025-4207
CVE.org
https://www.cve.org/CVERecord?id=CVE-2025-4207
www.postgresql.org
https://www.postgresql.org/support/security/CVE-2025-4207/
www.openwall.com
http://www.openwall.com/lists/oss-security/2025/05/09/3
lists.debian.org
https://lists.debian.org/debian-lts-announce/2025/05/msg00011.html
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