CVSS 4.0
6.9 mediumCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:L/SC:L/SI:N/SA:LCVE-2025-58050
Medium (6.9) in pcre pcre2. EPSS 0.9% 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.
Severity
CVSS 3.1
9.1 criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H- EPSS
- 0.9% chance of exploitation in the next 30 days; higher than 58% of CVEs (scores of 2026-10-31)
- CWEs
- CWE-787, CWE-122, CWE-125
- Published
- Modified
- Record from
- the NVD, synced
Affected
- pcre:pcre2
Packages (OSV)
| Advisory | Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|---|
| PYSEC-2025-259 | PyPI | pcre2 | <=10.45 | no fix published |
References
- https://github.com/PCRE2Project/pcre2/commit/a141712e5967d448c7ce13090ab530c8e3d82254
- https://github.com/PCRE2Project/pcre2/releases/tag/pcre2-10.46
- https://github.com/PCRE2Project/pcre2/security/advisories/GHSA-c2gv-xgf5-5cc2
- https://github.com/PCRE2Project/pcre2/security/advisories/GHSA-c2gv-xgf5-5cc2