CVE-2025-58050: Pcre PCRE2

Critical severity, CVSS 9.1. EPSS: 0.8% chance of exploitation in the next 30 days.

The PCRE2 library is a set of C functions that implement regular expression pattern matching. In version 10.45, a heap-buffer-overflow read vulnerability exists in the PCRE2 regular expression matching engine, specifically within the handling of the (*scs:...) (Scan SubString) verb when combined with (*ACCEPT) in src/pcre2_match.c. This vulnerability may potentially lead to information disclosure if the out-of-bounds data read during the memcmp affects the final match result in a way observable by the attacker. This issue has been resolved in version 10.46.

Affected products

• Pcre PCRE2: version 10.45 only

Published 2025-08-27. Last modified 2026-06-17.