CVE-2026-938579.2Critical
Fireware OS Pre-Authentication Stack Buffer Overflow in SIP Proxy Allows Remote Code Execution
WatchGuard · Fireware OS
Not in CISA KEVVendor fix available
No EPSS score yet. The score appears once FIRST publishes it.
9.2CriticalCVSS
LowMediumHighCrit.
DescriptionNVD
A stack-based buffer overflow vulnerability in Fireware OS's SIP proxy allows a remote, unauthenticated attacker to execute arbitrary code by sending a specially crafted request through a policy that uses the SIP proxy.
Coverage1 article · 1 outlet
First in our coverage: SecurityOnline, 28 Oct.
- WatchGuard fixes 18 Fireware flaws, including critical RCE bugSecurityOnline · first in our coverage · mentions it in passing
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