CVE-2026-14669: Heap-based Buffer Overflow in PostgreSQL
CVE-2026-14669 is a heap-based buffer overflow vulnerability in PostgreSQL's to_char(timestamptz) function. It allows an attacker who can choose the timezone to execute arbitrary code with the privileges of the operating system user running the database. The vulnerability affects PostgreSQL versions prior to 18.5, 17.11, 16.15, 15.19, and 14.24.
AI Analysis
Technical Summary
This vulnerability is a heap buffer overflow triggered by providing a long POSIX timezone abbreviation to the to_char(timestamptz) function in PostgreSQL. Exploitation allows arbitrary code execution as the OS user running the database. The affected versions are those before PostgreSQL 18.5, 17.11, 16.15, 15.19, and 14.24. The CVSS v3.1 score is 8.8, indicating high severity with network attack vector, low attack complexity, requiring privileges, no user interaction, and full confidentiality, integrity, and availability impact. No official patch or remediation level is provided in the data, and no known exploits are reported in the wild.
Potential Impact
Successful exploitation can lead to arbitrary code execution with the privileges of the database operating system user, potentially compromising confidentiality, integrity, and availability of the database server and its data.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is released, restrict access to the database to trusted users only and avoid allowing untrusted input to control timezone settings in to_char(timestamptz) calls.
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(timestamptz) function. It allows an attacker who can choose the timezone to execute arbitrary code with the privileges of the operating system user running the database. The vulnerability affects PostgreSQL versions prior to 18.5, 17.11, 16.15, 15.19, and 14.24.
CVSS v3.1
Score 8.8high
Affected software
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability is a heap buffer overflow triggered by providing a long POSIX timezone abbreviation to the to_char(timestamptz) function in PostgreSQL. Exploitation allows arbitrary code execution as the OS user running the database. The affected versions are those before PostgreSQL 18.5, 17.11, 16.15, 15.19, and 14.24. The CVSS v3.1 score is 8.8, indicating high severity with network attack vector, low attack complexity, requiring privileges, no user interaction, and full confidentiality, integrity, and availability impact. No official patch or remediation level is provided in the data, and no known exploits are reported in the wild.
Potential Impact
Successful exploitation can lead to arbitrary code execution with the privileges of the database operating system user, potentially compromising confidentiality, integrity, and availability of the database server and its data.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is released, restrict access to the database to trusted users only and avoid allowing untrusted input to control timezone settings in to_char(timestamptz) calls.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- PostgreSQL
- Date Reserved
- 2026-07-03T20:28:11.993Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a7dc615bf8831d5393e5288
Added to database: 08/13/2026, 13:26:45 UTC
Last enriched: 08/13/2026, 13:45:53 UTC
Last updated: 08/13/2026, 14:22:33 UTC
Views: 3
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