CVE-2026-6156

CRITICAL 9.8

Totolink A7100RU CGI cstecgi.cgi setIpQosRules os command injection

CVSS Score

9.8

EPSS Score

0.9%

EPSS Percentile

76th

A security vulnerability has been detected in Totolink A7100RU 7.4cu.2313_b20191024. This affects the function setIpQosRules of the file /cgi-bin/cstecgi.cgi of the component CGI Handler. The manipulation of the argument Comment leads to os command injection. Remote exploitation of the attack is possible. The exploit has been disclosed publicly and may be used.

CWE	CWE-78 CWE-77
Vendor	totolink
Product	a7100ru
Published	Apr 13, 2026
Last Updated	Apr 13, 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_b20191024

References

NVD ↗ CVE.org ↗ EPSS Data ↗

vuldb.com: https://vuldb.com/vuln/357036 vuldb.com: https://vuldb.com/vuln/357036/cti vuldb.com: https://vuldb.com/submit/793681 github.com: https://github.com/Litengzheng/vuldb_new/blob/main/A7100RU/vul_197/README.md totolink.net: https://www.totolink.net/

Credits

🔍 LtzHust2 (VulDB User)