Endian Firewall 3.3.25 Parameter /cgi-bin/snat.cgi remark cross site scripting

CVSS Meta Temp Score
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CTI Interest Score
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5.1$0-$5k0.00

Summaryinfo

A vulnerability labeled as problematic has been found in Endian Firewall 3.3.25. The affected element is an unknown function of the file /cgi-bin/snat.cgi of the component Parameter Handler. Executing a manipulation of the argument remark can lead to cross site scripting. This vulnerability is registered as CVE-2026-34806. It is possible to launch the attack remotely. No exploit is available.

Detailsinfo

A vulnerability has been found in Endian Firewall 3.3.25 and classified as problematic. This vulnerability affects an unknown part of the file /cgi-bin/snat.cgi of the component Parameter Handler. The manipulation of the argument remark with an unknown input leads to a cross site scripting vulnerability. The CWE definition for the vulnerability is CWE-79. The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users. As an impact it is known to affect integrity. CVE summarizes:

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

The weakness was published by Alex Williams. The advisory is available at help.endian.com. This vulnerability was named CVE-2026-34806 since 03/30/2026. The exploitation appears to be easy. The attack can be initiated remotely. Successful exploitation requires user interaction by the victim. Technical details are known, but there is no available exploit. This vulnerability is assigned to T1059.007 by the MITRE ATT&CK project.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

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Productinfo

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Vendor

Name

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA CVSS-B Score: 🔒
CNA CVSS-BT Score: 🔒
CNA Vector: 🔒

CVSSv3info

VulDB Meta Base Score: 5.1
VulDB Meta Temp Score: 5.1

VulDB Base Score: 3.5
VulDB Temp Score: 3.5
VulDB Vector: 🔒
VulDB Reliability: 🔍

NVD Base Score: 5.4
NVD Vector: 🔒

CNA Base Score: 6.4
CNA Vector (VulnCheck): 🔒

CVSSv2info

AVACAuCIA
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Cross site scripting
CWE: CWE-79 / CWE-94 / CWE-74
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔒

Timelineinfo

03/30/2026 CVE reserved
04/02/2026 +3 days Advisory disclosed
04/02/2026 +0 days VulDB entry created
07/26/2026 +115 days VulDB entry last update

Sourcesinfo

Advisory: help.endian.com
Researcher: Alex Williams
Status: Confirmed

CVE: CVE-2026-34806 (🔒)
GCVE (CVE): GCVE-0-2026-34806
GCVE (VulDB): GCVE-100-354910

Entryinfo

Created: 04/02/2026 17:30
Updated: 07/26/2026 06:06
Changes: 04/02/2026 17:30 (78), 07/26/2026 06:06 (12)
Complete: 🔍
Cache ID: 216::103

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