What is CVE-2026-14669?

CVE-2026-14669 is a high-severity vulnerability in Postgresql, classified under Heap-based Buffer Overflow. CVSS score: 8.8/10. Published 2026-08-13.

How severe is CVE-2026-14669?

High severity. CVSS v3 base score is 8.8 out of 10.

Buffer overflow in Postgresql

CVE-2026-14669

Heap buffer overflow in PostgreSQL to_char(timestamptz) allows the party choosing the timezone to execute arbitrary code as the operating system user running the database, via a long POSIX timezone abbreviation. Versions before PostgreSQL…

Vulnerability class: Buffer Overflow

CVSS v3 metric

CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

Affected products

N/a Postgresql — versions 18, 17, 16

Weakness classification (CWE)

CWE-122 — Heap-based Buffer Overflow

References

f86ef6dc-4d3a-42ad-8f28-e6d5547a5007

Frequently asked questions

What is CVE-2026-14669?: CVE-2026-14669 is a high-severity vulnerability in Postgresql, classified under Heap-based Buffer Overflow. CVSS score: 8.8/10. Published 2026-08-13.
How severe is CVE-2026-14669?: High severity. CVSS v3 base score is 8.8 out of 10.