PT-2026-126627

CVE-2026-103594

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Published

2026-10-27

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Updated

2026-10-27

Description by

CVSS 4.0
9.5
Critical
MetricsAV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
A stack-based buffer overflow vulnerability in Fireware OS's WireGuard configuration processing allows a remote attacker that has man-in-the-middle TLS-decrypted access between the Firebox and WatchGuard Cloud to create a Denial of Service condition and potentially execute arbitrary code by tampering with a FireCloud Gateway configuration payload.
Exploitability
Fix
Impacts
Vendors
Affected products
Weakness enumeration
CWE-787: Out-of-bounds Write
CWE-121: Stack-based Buffer Overflow
CWE-1284: Improper Validation of Specified Quantity in Input
Related identifiers
CVE-2026-103594
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