CVE-2026-14669: Heap-based Buffer Overflow in PostgreSQL
CVE-2026-14669 is a heap-based buffer overflow vulnerability in PostgreSQL's to_char function for timestamptz data type. It allows an attacker who can control the timezone input to execute arbitrary code with the privileges of the database operating system user by providing a long POSIX timezone abbreviation. This vulnerability affects multiple PostgreSQL major versions prior to specific patch releases.
AI Analysis
Technical Summary
This vulnerability is a heap buffer overflow in the PostgreSQL function to_char(timestamptz) triggered by a long POSIX timezone abbreviation. An attacker who can influence the timezone parameter can exploit this flaw to execute arbitrary code as the OS user running the database. The affected versions include all releases before PostgreSQL 18.6, 17.11, 16.15, 15.19, and 14.24.
Potential Impact
Successful exploitation allows arbitrary code execution with the privileges of the operating system user running the PostgreSQL database. This can lead to full compromise of the database server, including confidentiality, integrity, and availability impacts.
Mitigation Recommendations
Fixed versions are available: PostgreSQL 18.6, 17.11, 16.15, 15.19, and 14.24 and later. Users should upgrade to these or later versions to remediate this vulnerability. No additional mitigation is required if upgraded.
CVE-2026-14669: Heap-based Buffer Overflow in PostgreSQL
Description
CVE-2026-14669 is a heap-based buffer overflow vulnerability in PostgreSQL's to_char function for timestamptz data type. It allows an attacker who can control the timezone input to execute arbitrary code with the privileges of the database operating system user by providing a long POSIX timezone abbreviation. This vulnerability affects multiple PostgreSQL major versions prior to specific patch releases.
CVSS v3.1
Score 8.8high
Affected software
PostgreSQL
pkg:deb/postgresql/postgresqlRun on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability is a heap buffer overflow in the PostgreSQL function to_char(timestamptz) triggered by a long POSIX timezone abbreviation. An attacker who can influence the timezone parameter can exploit this flaw to execute arbitrary code as the OS user running the database. The affected versions include all releases before PostgreSQL 18.6, 17.11, 16.15, 15.19, and 14.24.
Potential Impact
Successful exploitation allows arbitrary code execution with the privileges of the operating system user running the PostgreSQL database. This can lead to full compromise of the database server, including confidentiality, integrity, and availability impacts.
Mitigation Recommendations
Fixed versions are available: PostgreSQL 18.6, 17.11, 16.15, 15.19, and 14.24 and later. Users should upgrade to these or later versions to remediate this vulnerability. No additional mitigation is required if upgraded.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- PostgreSQL
- Date Reserved
- 2026-07-03T20:28:11.993Z
- Cvss Version
- 3.1
- State
- PUBLISHED
Threat ID: 6a7dc615bf8831d5393e5288
Added to database: 08/13/2026, 13:26:45 UTC
Last enriched: 09/12/2026, 04:47:03 UTC
Last updated: 09/27/2026, 13:47:42 UTC
Views: 42
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