CVE-2026-18024: PostgreSQL ascii() function reads past end of buffer

Overview

Severity

Medium (CVSS 4.3)

CVSS Vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N/E:U

Exploit Status

Not Exploited

Patch Tuesday

2026-Aug

Released

2026-08-14

EPSS Score

0.30% (percentile: 22.8%)

Affected Products (1)

Other

• 21725-17084

Revision History

• 2026-08-14: Information published.