CVE-2026-5851

CRITICAL 9.8

Totolink A7100RU CGI cstecgi.cgi setUPnPCfg os command injection

CVSS Score

9.8

EPSS Score

0.0%

EPSS Percentile

0th

A security flaw has been discovered in Totolink A7100RU 7.4cu.2313_b20191024. This impacts the function setUPnPCfg of the file /cgi-bin/cstecgi.cgi of the component CGI Handler. The manipulation of the argument enable results in os command injection. The attack can be executed remotely. The exploit has been released to the public and may be used for attacks.

CWE	CWE-78 CWE-77
Vendor	totolink
Product	a7100ru
Published	Apr 9, 2026
Last Updated	Apr 9, 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/356377 vuldb.com: https://vuldb.com/vuln/356377/cti vuldb.com: https://vuldb.com/submit/791271 github.com: https://github.com/Litengzheng/vuldb_new/blob/main/A7100RU/vul_157/README.md totolink.net: https://www.totolink.net/

Credits

🔍 LtzHust2 (VulDB User)