CVE-2026-5994

CRITICAL 9.8

Totolink A7100RU CGI cstecgi.cgi setTelnetCfg os command injection

CVSS Score

9.8

EPSS Score

0.9%

EPSS Percentile

76th

A security flaw has been discovered in Totolink A7100RU 7.4cu.2313_b20191024. This issue affects the function setTelnetCfg of the file /cgi-bin/cstecgi.cgi of the component CGI Handler. Performing a manipulation of the argument telnet_enabled results in os command injection. The attack is possible to be carried out 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 10, 2026
Last Updated	Apr 10, 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/356548 vuldb.com: https://vuldb.com/vuln/356548/cti vuldb.com: https://vuldb.com/submit/792042 github.com: https://github.com/Litengzheng/vuldb_new/blob/main/A7100RU/vul_166/README.md totolink.net: https://www.totolink.net/

Credits

🔍 LtzHust (VulDB User)