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CVE-2026-6140

Totolink A7100RU CGI cstecgi.cgi UploadFirmwareFile os command injection

Published: Apr 13, 2026Updated: Apr 13, 2026 Sources: CVE List NVD
NVD MITRE
9.8CVSS
CRITICAL

A vulnerability was found in Totolink A7100RU 7.4cu.2313_b20191024. This impacts the function UploadFirmwareFile of the file /cgi-bin/cstecgi.cgi of the component CGI Handler. Performing a manipulation of the argument FileName results in os command injection. The attack may be initiated remotely. The exploit has been made public and could be used.

EPSS Score
N/A
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
No Fix Available

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

Weaknesses

CWE-77CWE-78

Affected Products

A7100RU
Totolink

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

1 technique
Execution
View detailed technique mapping

References

https://github.com/Litengzheng/vuldb_new/blob/main/A7100RU/vul_193/README.md
github.com
https://vuldb.com/submit/792987
vuldb.com
https://vuldb.com/vuln/357004
vuldb.com
and 2 more references View all →

Timeline

Published
Apr 13, 2026
Last Updated
Apr 13, 2026

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