Stack-based buffer overflow in Fireware OS - CVE-2026-18145
Published: October 2, 2026
Vulnerability identifier: #VU153115
CSH Severity: Low
CVSS v4: 8.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-18145
CWE-ID: CWE-121
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote user to execute arbitrary code on the target system.
The vulnerability exists due to a boundary error within the handling of xpath and parameter values provided to the spamBlocker (spamd) daemon's status and action handlers. A remote administrator can trigger stack-based buffer overflow and execute arbitrary code on the target system.
Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.
Affected software
Fireware OS
How to mitigate CVE-2026-18145
Install updates from vendor's website.
Fireware OS - addressed in versions 12.12.3, 2026.2.3, 2026.3.2