Vulnerability Report

CVE-2026-6473

Title: Integer wraparound leading to out-of-bounds write

Memory Corruption

Proof Of Concept

No public PoC currently indexed for CVE-2026-6473.

CWE Category CWE-190

Published Date May 14, 2026

Modified Date Jul 24, 2026

Exploit Status Not Found

Score 8.8 CVSS v3.1

Exploit Probability (EPSS)

1.01%

Vulnerability Summary

CVE-2026-6473: Integer wraparound in multiple PostgreSQL server features allows an unprivileged database user to cause the server to undersize an allocation and write out-of-bounds. This may execute arbitrary code as the operating system user running the database. In applications that pass gigabyte-scale user inputs to the relevant database functions, the application input provider may achieve a segmentation fault. Versions before PostgreSQL 18.4, 17.10, 16.14, 15.18, and 14.23 are affected.

Impacted Vendors

postgresql 1

anynines 1

Reference Links

https://www.postgresql.org/support/security/CVE-2026-6473/

CVSS v3.1

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

Severity HIGH

8.8

Attack Vector

NETWORK

Complexity

LOW

Privileges

N/A

Interaction

NONE

Confidentiality

N/A

Integrity

N/A

Availability

N/A

Scope

UNCHANGED

RAW VECTOR CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H