CVE-2026-9533: Totolink CA750-PoE Setting cstecgi.cgi recvUpgradeNewFw os command injection

Severity: medium (CVSS 6.3 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 10.4% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-05-26 · updated 2026-07-23
Weakness: CWE-77

Description

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.

Affected products

Totolink CA750-PoE: 6.2c.510

References

https://github.com/wudipjq/my_vuln/blob/main/totolink4/vuln_56/56.md
https://vuldb.com/submit/813937
https://vuldb.com/vuln/365560
https://vuldb.com/vuln/365560/cti
https://www.totolink.net/

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