Integer overflow in PCRE2 - #VU146527
Published: August 31, 2026
Vulnerability identifier: #VU146527
CSH Severity: Medium
CVSS v4: 8.3 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:H/VA:L/SC:N/SI:N/SA:N]
CVE-ID: N/A
CWE-ID: CWE-190
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to cause memory corruption.
The vulnerability exists due to integer overflow in pcre2_compile_32() when compiling a large attacker-controlled pattern. A remote attacker can supply a carefully crafted pattern to cause memory corruption.
Only the 32-bit code-unit library running in a 32-bit process is vulnerable. The issue does not affect the 8-bit or 16-bit libraries.
Affected software
PCRE2
Remediation
Install security update from vendor's website.
PCRE2 - update to 10.48