CVE-2026-34805

Endian Firewall /cgi-bin/dnat.cgi remark Stored Cross-Site Scripting

CVSS 5.1 MEDIUMEPSS 0.2%CWE-79

Vexday Risk Score

13Low

SSVC decision (CISA)

Track

No exploitation signal → monitor

CVSS 5.1EPSS 0.2%KEV nãoPoC —Nuclei —Metasploit —Patch —

Lifecycle

02 Apr 2026Published on NVD

Recommendation: Monitor — no exploitation signal at the moment.

Endian Firewall version 3.3.25 and prior allow stored cross-site scripting (XSS) via the remark parameter to /cgi-bin/dnat.cgi. An authenticated attacker can inject arbitrary JavaScript that is stored and executed when other users view the affected page.

CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N

Affected products

Endian · Endian Firewall

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References

https://help.endian.com/hc/en-us/sections/360004371358-Community https://www.vulncheck.com/advisories/endian-firewall-cgi-bin-dnat-cgi-remark-stored-cross-site-scripting