Buffer overflow in Postgresql
CVE-2026-2005
Heap buffer overflow in PostgreSQL pgcrypto allows a ciphertext provider to execute arbitrary code as the operating system user running the database. Versions before PostgreSQL 18.2, 17.8, 16.12, 15.16, and 14.21 are affected.
Vulnerability class: Buffer Overflow
EPSS: 0.012 (64.5th percentile) — read the EPSS interpretation.
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
- Postgresql
- N/a Postgresql — versions 18, 17, 16
Weakness classification (CWE)
Public proof-of-concept exploits
References
- f86ef6dc-4d3a-42ad-8f28-e6d5547a5007 (Vendor Advisory)
- 0b0ca135-0b70-47e7-9f44-1890c2a1c46c
- 0b0ca135-0b70-47e7-9f44-1890c2a1c46c
- 0b0ca135-0b70-47e7-9f44-1890c2a1c46c
- 0b0ca135-0b70-47e7-9f44-1890c2a1c46c
- 0b0ca135-0b70-47e7-9f44-1890c2a1c46c
- 0b0ca135-0b70-47e7-9f44-1890c2a1c46c
- 0b0ca135-0b70-47e7-9f44-1890c2a1c46c
- 0b0ca135-0b70-47e7-9f44-1890c2a1c46c
- 0b0ca135-0b70-47e7-9f44-1890c2a1c46c
Frequently asked questions
- What is CVE-2026-2005?
- CVE-2026-2005 is a high-severity vulnerability in Postgresql, classified under Heap-based Buffer Overflow. CVSS score: 8.8/10. Published 2026-02-12.
- How severe is CVE-2026-2005?
- High severity. CVSS v3 base score is 8.8 out of 10.
- Is CVE-2026-2005 known to be exploited?
- 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.