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CVE-2026-5977

Totolink A7100RU CGI cstecgi.cgi setWiFiBasicCfg os command injection

CVSS 9.3 CRITICALEPSS 2.1%CWE-77CWE-78
Vexday Risk Score
48Attention
SSVC decision (CISA)
Attend
PoC available → attend closely
CVSS 9.3EPSS 2.1%KEV nãoPoC públicaNuclei —Metasploit —Patch —
Lifecycle
09 Apr 2026Published on NVD
Recommendation: Plan a near-term fix — a public PoC already exists.
A weakness has been identified in Totolink A7100RU 7.4cu.2313_b20191024. This impacts the function setWiFiBasicCfg of the file /cgi-bin/cstecgi.cgi of the component CGI Handler. Executing a manipulation of the argument wifiOff can lead to os command injection. It is possible to launch the attack remotely. The exploit has been made available to the public and could be used for attacks.
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P
Affected products
Totolink · A7100RU
public PoCs found — 1
cve_referencegithub.com/Litengzheng/vuldb_new/blob/main/A7100RU/vul_163/README.mdunverified
⚠ Public resources, to assess the exposure of systems you control or are authorized to test. Test only with authorization.

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References
https://github.com/Litengzheng/vuldb_new/blob/main/A7100RU/vul_163/README.mdhttps://vuldb.com/submit/791823https://vuldb.com/vuln/356531https://vuldb.com/vuln/356531/ctihttps://www.totolink.net/