CVE-2026-9531: Totolink CA750-PoE Setting cstecgi.cgi setUpgradeUboot 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 weakness has been identified in Totolink CA750-PoE 6.2c.510. Impacted is the function setUpgradeUboot of the file /cgi-bin/cstecgi.cgi of the component Setting Handler. This manipulation of the argument FileName causes os command injection. The attack is possible to be carried out remotely. The exploit has been made available to the public and could be used for attacks.

Affected products

Totolink CA750-PoE: 6.2c.510

References

https://github.com/wudipjq/my_vuln/blob/main/totolink4/vuln_54/54.md
https://vuldb.com/submit/813929
https://vuldb.com/vuln/365558
https://vuldb.com/vuln/365558/cti
https://www.totolink.net/
https://vuldb.com/submit/813929

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