CVE-2026-18145: CWE-121 in WatchGuard Fireware OS
A stack-based buffer overflow vulnerability in the spamBlocker (spamd) service of WatchGuard Fireware OS allows an authenticated attacker with administrator privileges to crash the service or potentially execute arbitrary code by sending a specially crafted management request.
CVE-2026-18145: CWE-121 in WatchGuard Fireware OS
Description
A stack-based buffer overflow vulnerability in the spamBlocker (spamd) service of WatchGuard Fireware OS allows an authenticated attacker with administrator privileges to crash the service or potentially execute arbitrary code by sending a specially crafted management request.
CVSS v4.0
Score 8.6high
Affected software
WatchGuard
Fireware OS
WatchGuard
Fireware OS
Weaknesses
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- WatchGuard
- Date Reserved
- 2026-07-28T18:56:32.068Z
- Cvss Version
- 4.0
- State
- PUBLISHED
Threat ID: 6abcb47dc8a85a770df5695a
Added to database: 09/30/2026, 07:04:29 UTC
Last updated: 09/30/2026, 07:04:29 UTC
Views: 1
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