Stack-based buffer overflow in Squid - CVE-2025-59362
Published: October 6, 2025
Vulnerability identifier: #VU116638
CSH Severity: Medium
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2025-59362
CWE-ID: CWE-121
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: Squid-cache.org
Affected software:
Squid
Squid
Detailed vulnerability description
The vulnerability allows a remote user to perform a denial of service (DoS) attack.
The vulnerability exists due to a boundary error when handling ASN.1 encoding of long SNMP OIDs within the asn_build_objid() function in lib/snmplib/asn1.c. A remote user can trigger a stack-based buffer overflow and crash the proxy server.
How to mitigate CVE-2025-59362
Cybersecurity Help is currently unaware of any official solution to address this vulnerability.