Critical severity · published Aug 27, 2025
CVE-2025-58050
The PCRE2 library is a set of C functions that implement regular expression pattern matching
9.1
CVSS
0.8%
EPSS
No
On KEV
Description
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
High
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.8% · higher than 57% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
PC
Pcre2 · Pcre
10.45 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2025-58050
CVE.org
https://www.cve.org/CVERecord?id=CVE-2025-58050
Patch
https://github.com/PCRE2Project/pcre2/commit/a141712e5967d448c7ce13090ab530c8e3d82254
Release Notes
https://github.com/PCRE2Project/pcre2/releases/tag/pcre2-10.46
Exploit
https://github.com/PCRE2Project/pcre2/security/advisories/GHSA-c2gv-xgf5-5cc2
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