CVE-2026-6155

CRITICAL 9.8

Totolink A7100RU CGI cstecgi.cgi setWanCfg os command injection

CVSS Score

9.8

EPSS Score

0.0%

EPSS Percentile

0th

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.

CWE	CWE-78 CWE-77
Vendor	totolink
Product	a7100ru
Published	Apr 13, 2026
Last Updated	Apr 14, 2026

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CVSS v3 Breakdown

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:P/RL:X/RC:R

Attack Vector

Attack Complexity

Privileges Required

User Interaction

Scope

Confidentiality

Integrity

Availability

Affected Versions

Totolink / A7100RU

7.4cu.2313

References

NVD ↗ CVE.org ↗ EPSS Data ↗

vuldb.com: https://vuldb.com/vuln/357035 vuldb.com: https://vuldb.com/vuln/357035/cti vuldb.com: https://vuldb.com/submit/793679 github.com: https://github.com/Litengzheng/vuldb_new/blob/main/A7100RU/vul_196/README.md totolink.net: https://www.totolink.net/

Credits

🔍 LtzHust2 (VulDB User)