Fireware
CVE-2026-3343
MEDIUM
Severity by source
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:L/VI:L/VA:N/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
Primary rating from Vendor (5d1c2695-1a31-4499-88ae-e847036fd7e3) · only source for this CVE.
CVSS VectorVendor: 5d1c2695-1a31-4499-88ae-e847036fd7e3
Lifecycle Timeline
3DescriptionCVE.org
A reflected cross-site scripting (XSS) vulnerability in the Fireware OS Web UI enabled execution of malicious JavaScript in the context of an authenticated management user's browser when they click on a specially crafted link.
This vulnerability affects Fireware OS 12.7 up to and including 12.11.7 and 2025.1 up to and including 2026.1.1.
AnalysisAI
Fireware OS Web UI contains a reflected XSS vulnerability that allows attackers to execute arbitrary JavaScript in authenticated administrators' browsers through crafted links, affecting versions 12.7-12.11.7 and 2025.1-2026.1.1. An attacker can leverage this to perform administrative actions or steal session credentials from targeted management users who click malicious links. No patch is currently available.
Technical ContextAI
Classified as CWE-79 (Cross-site Scripting (XSS)). Affects Fireware. A reflected cross-site scripting (XSS) vulnerability in the Fireware OS Web UI enabled execution of malicious JavaScript in the context of an authenticated management user's browser when they click on a specially crafted link.
This vulnerability affects Fireware OS 12.7 up to and including 12.11.7 and 2025.1 up to and including 2026.1.1.
RemediationAI
Monitor vendor advisories for a patch. Implement output encoding and Content Security Policy headers. Restrict network access to the affected service where possible.
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Same weakness CWE-79 – Cross-site Scripting (XSS)
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External POC / Exploit Code
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