CVE Tools
Sign in

CVE-2026-6155

Totolink A7100RU CGI cstecgi.cgi setWanCfg os command injection

Published: Apr 13, 2026Updated: Apr 27, 2026 Sources: CVE List NVD BDUCWE-77
9.8CRITICAL
NVD MITRE
EPSS Score
1.8%
Top 23.6%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available
Self-Check
Not available

Description

A weakness has been identified in Totolink A7100RU 7.4cu.2313. The impacted element is the function setWanCfg of the file /cgi-bin/cstecgi.cgi of the component CGI Handler. Executing a manipulation of the argument pppoeServiceName can lead to os command injection. The attack may be launched remotely. The exploit has been made available to the public and could be used for attacks.

No summary for this CVE yet.

CVSS Vector Breakdown

AV:NAC:LPR:NUI:NS:UC:HI:HA:H
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:NPrivileges Required
None
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:HConfidentiality
High
I:HIntegrity
High
A:HAvailability
High
Open in CVSS calculator →

Weaknesses

CWE-77CWE-78

Affected Products

TOTOLink
commercial·TWaka totolink corp.
A7100RU
Networking Infrastructure
and 1 more affected products View all →

Exploitability

Official Patch Available
Is your org exposed to CVE-2026-6155?We can run the check for you — a free external exposure review, no install. Check my exposure

Attack Graph

Products CVE Techniques Tactics

Click technique nodes for MITRE ATT&CK details · drag to pan · Ctrl/⌘ + scroll to zoom, or go fullscreen.

MITRE ATT&CK

1 technique
Execution
View detailed technique mapping

References

https://github.com/Litengzheng/vuldb_new/blob/main/A7100RU/vul_196/README.md
github.com
https://vuldb.com/vuln/357035
vuldb.com
https://vuldb.com/vuln/357035/cti
vuldb.com
and 2 more references View all →

Unlock Complete Vulnerability Intelligence

Get the full picture for CVE-2026-6155 and every CVE in our database. Create a free account — no credit card required.

Create Free Account
Plain-language analysis
Impact assessment and exploitation scenario in plain English
Attack graph visualization
Interactive attack path and kill chain mapping
Exploit details & PoC links
ExploitDB, Metasploit, GitHub PoCs with direct links
Nuclei scanner templates
Ready-to-use vulnerability scanner templates
Full remediation guide
Patch instructions, workarounds, and compliance impact
Interactive AI chat
Ask questions about this vulnerability in natural language
Related vulnerabilities
Semantically similar CVEs and attack patterns
REST API & MCP access
Integrate vulnerability data into your workflows