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CVE-2026-34811

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

Published: Apr 2, 2026Updated: Apr 7, 2026 Sources: CVE List NVDCWE-79
NVD MITRE
6.4CVSSMEDIUM
EPSS Score
0.1%
Top 96.5%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
No Fix Available

Description

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

CVSS Vector Breakdown

AV:NAC:LPR:LUI:NS:CC:LI:LA:N
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:LPrivileges Required
Low
UI:NUser Interaction
None
Scope
S:CScope
Changed
Impact
C:LConfidentiality
Low
I:LIntegrity
Low
A:NAvailability
None
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Weaknesses

CWE-79

Affected Products

firewall communityendian
On-premSecurity Product
Networking Infrastructure / firewall
Endian FirewallEndian
On-premNetwork Device
Networking Infrastructure / firewall
endiancommercialESNetworking Infrastructureaka endian

Attack Graph

Products CVE Techniques Tactics

Click technique nodes to view MITRE ATT&CK details. Scroll to zoom, drag to pan.

Exploitability

No known exploits, KEV entries, or remediation guidance available for this vulnerability yet.

MITRE ATT&CK

2 techniques
Execution
Initial Access
View detailed technique mapping

References

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

Timeline

Published
Apr 2, 2026
Last Updated
Apr 7, 2026

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