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CVE-2026-5677

Totolink A7100RU cstecgi.cgi CsteSystem os command injection

CVSS 6.9 MEDIUMEPSS 1.1%CWE-77CWE-78
Vexday Risk Score
33Attention
SSVC decision (CISA)
Attend
PoC available → attend closely
CVSS 6.9EPSS 1.1%KEV nãoPoC públicaNuclei —Metasploit —Patch —
Lifecycle
06 Apr 2026Published on NVD
Recommendation: Plan a near-term fix — a public PoC already exists.
A security flaw has been discovered in Totolink A7100RU 7.4cu.2313_b20191024. Impacted is the function CsteSystem of the file /cgi-bin/cstecgi.cgi. Performing a manipulation of the argument resetFlags results in os command injection. The attack may be initiated remotely. The exploit has been released to the public and may be used for attacks.
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/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_184/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_184/README.mdhttps://vuldb.com/submit/792606https://vuldb.com/vuln/355504https://vuldb.com/vuln/355504/ctihttps://www.totolink.net/