CVE-2025-58050

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 v3.1 Score

9.1

CRITICAL

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

Weakness Type (CWE)

CWE-122 CWE-122

CWE-125 Out-of-bounds Read

CWE-787 Out-of-bounds Write

Affected Products

Vendor	Product	Versions
pcre	pcre2	All

References

Advisories & Patches

https://github.com/PCRE2Project/pcre2/commit/a141712e5967d448c7ce13090ab530c8e3d82254 https://github.com/PCRE2Project/pcre2/security/advisories/GHSA-c2gv-xgf5-5cc2 https://github.com/PCRE2Project/pcre2/security/advisories/GHSA-c2gv-xgf5-5cc2

Exploits

https://github.com/PCRE2Project/pcre2/security/advisories/GHSA-c2gv-xgf5-5cc2 https://github.com/PCRE2Project/pcre2/security/advisories/GHSA-c2gv-xgf5-5cc2

Other References

https://github.com/PCRE2Project/pcre2/releases/tag/pcre2-10.46

Frequently Asked Questions

What is CVE-2025-58050? +

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. It has a CVSS v3.1 base score of 9.1 (CRITICAL).

How severe is CVE-2025-58050? +

CVE-2025-58050 has a CVSS v3.1 score of 9.1 out of 10, rated CRITICAL. This is a critical vulnerability that should be patched immediately.

What products are affected by CVE-2025-58050? +

CVE-2025-58050 affects products from pcre, specifically: pcre2. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2025-58050? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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