AI and data stack advisories

Severe, 6 weeks977Projects326

977 severe, 6 weeks · 326 projects

WatchGuard TechnologiesCVE-2026-113881

WatchGuard Technologies Fireware OS: stack buffer overflow

WatchGuard Technologies

CVE-2026-113881 · Published Oct 27, 2026 · updated Oct 28, 2026

Medium6.1
Fix: upgrade to 2026.4 or later (2 fixed versions below)
WatchGuard Technologies advisory

A stack-based buffer overflow vulnerability in Fireware OS's VPN Network Access Enforcement process allows an authenticated mobile VPN user to create a denial of service condition and potentially execute arbitrary code as an unprivileged process by sending a specially crafted request.

Affected versions

PackageAffectedFixed in
Fireware OS
Product
>= 2025.1, < 2026.42026.4
>= 12.9, < 12.12.412.12.4
Details and references
CVSS 4.0
CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:L/VI:L/VA:H/SC:N/SI:N/SA:N/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
Severity from
the vendor (its own CVE record or advisory)
Weakness
CWE-121, CWE-129

More WatchGuard Technologies advisories

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Critical 9.2Oct 27WatchGuard Technologies Fireware OS: integer overflowCVE-2026-93866fixed in 2026.4 +2High 8.7Oct 27WatchGuard Technologies Fireware OS: XPath injectionCVE-2026-93434fixed in 12.5.22 +2Critical 9.2Oct 27WatchGuard Technologies Fireware OS: stack buffer overflowCVE-2026-93857fixed in 2026.4 +2High 7.2Oct 27WatchGuard Technologies Fireware OS: out-of-bounds readCVE-2026-93862fixed in 2026.4 +2High 7.1Oct 27WatchGuard Technologies Fireware OS: code executionCVE-2026-93864fixed in 2026.4 +2Critical 9.2Oct 27WatchGuard Technologies Fireware OS: missing authenticationCVE-2026-93865fixed in 2026.4 +2