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CVE-2026-9533

Totolink CA750-PoE Setting cstecgi.cgi recvUpgradeNewFw os command injection

CVSS 5.3 MEDIUMEPSS 1.8%CWE-77CWE-78
Vexday Risk Score
33Attention
SSVC decision (CISA)
Attend
PoC available → attend closely
CVSS 5.3EPSS 1.8%KEV nãoPoC públicaNuclei —Metasploit —Patch —
Lifecycle
26 May 2026Published on NVD
Recommendation: Plan a near-term fix — a public PoC already exists.
A vulnerability was detected in Totolink CA750-PoE 6.2c.510. The impacted element is the function recvUpgradeNewFw of the file /cgi-bin/cstecgi.cgi of the component Setting Handler. Performing a manipulation of the argument fwUrl/magicid results in os command injection. It is possible to initiate the attack remotely. The exploit is now public and may be used.
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P
Affected products
Totolink · CA750-PoE
public PoCs found — 1
cve_referencegithub.com/wudipjq/my_vuln/blob/main/totolink4/vuln_56/56.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/wudipjq/my_vuln/blob/main/totolink4/vuln_56/56.mdhttps://vuldb.com/submit/813937https://vuldb.com/vuln/365560https://vuldb.com/vuln/365560/ctihttps://www.totolink.net/