CVE-2026-18145High· 7.2▾ TwilightA 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…
▾ Twilight zone — High severity, or a signal on a lesser flaw
impact 39.6 · likelihood 0.1 · exploitation 0
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Stakeholder-Specific Vulnerability Categorization from CISA's ADP record at CVE.org: whether exploitation is observed, whether an attack can be automated, and how much of the system is at stake.
Exploit-prediction probability, daily snapshots since Sep 30.
Disclosure to exploitation, from the record and what we observed since indexing it.
Disclosed via NVD
0.3%
Last analysed / modified upstream
8.6 → 7.2
0.3% → 0.4%
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.
fireware >= 12.0, < 12.5.21fireware >= 12.12, < 12.12.3fireware >= 2025.2, < 2026.2.3fireware >= 2026.3, < 2026.3.2Upgrade past the affected range:
fireware 2026.3.2Field changes observed since this record was first indexed.
Connected by shared product, vendor, weakness, or advisory.
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