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CVE-2025-58050— PCRE2: heap-buffer-overflow read in match_ref due to missing boundary restoration in SCS

Quick assessment

Affected
PCRE2Project pcre2
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

PCRE2是PCRE2Project开源的一组 C 函数。使用与 Perl5 相同的语法和语义来实现正则表达式模式匹配。 PCRE2 10.45版本存在安全漏洞，该漏洞源于处理(scs:...)和(ACCEPT)时存在堆缓冲区溢出读取，可能导致信息泄露。

AI Predicted 5.5 Difficulty: Moderate EPSS 0.80% · P54

Possible ATT&CK Techniques 1 AI

T1083 · File and Directory Discovery
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I. Basic Information for CVE-2025-58050

Vulnerability Information
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Vulnerability Title
PCRE2: heap-buffer-overflow read in match_ref due to missing boundary restoration in SCS
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:L/SC:L/SI:N/SA:L
Source: CVE Program / CVE List V5
Vulnerability Type
跨界内存读
Source: CVE Program / CVE List V5
Vulnerability Title
PCRE2 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
PCRE2是PCRE2Project开源的一组 C 函数。使用与 Perl5 相同的语法和语义来实现正则表达式模式匹配。 PCRE2 10.45版本存在安全漏洞，该漏洞源于处理(*scs:...)和(*ACCEPT)时存在堆缓冲区溢出读取，可能导致信息泄露。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
PCRE2Project pcre2 = 10.45 -

II. Public POCs for CVE-2025-58050

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III. Intelligence Information for CVE-2025-58050

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IV. Related Vulnerabilities

Same product: pcre2
Same weakness: CWE-125

V. Comments for CVE-2025-58050

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