CVE-2026-89157: PCRE2 before 10.48, on 32-bit platforms, has a pcre2_pattern_convert out-of-bounds write when an attacker can provide a large pattern.

Overview

Severity

Medium (CVSS 5.7)

CVSS Vector

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

Exploit Status

Not Exploited

Patch Tuesday

2026-Sep

Released

2026-09-12

Last Updated

2026-09-29

EPSS Score

0.35% (percentile: 28.3%)

Affected Products (2)

Other

• 21801-17084
• 21810-17084

Security Updates (1)

• Security Update

Revision History

• 2026-09-12: Information published.
• 2026-09-16: Information published.
• 2026-09-17: Information published.
• 2026-09-19: Information published.
• 2026-09-22: Information published.
• 2026-09-25: Information published.
• 2026-09-29: Information published.