Vulnerability · Published May 26, 2026 · Assigned by VulDB

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

Medium 6.3

In plain English

A medium-severity OS command injection in CA750-PoE from Totolink. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 10.4% (higher than 96% of all known vulnerabilities).

Severity (CVSS 3.1)6.3Medium

Exploit odds (30 days)10.4%top 4.3% of all CVEs

Exploited in the wildNo reportsCISA SSVC: poc

Attack toolingNoneno public tooling known

Official 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 (as reported)

Vendor	Product	Versions
Totolink	CA750-PoE	6.2c.510

Weakness: CWE-78, CWE-77 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:R

References

VDB-365560 | Totolink CA750-PoE Setting cstecgi.cgi recvUpgradeNewFw os command injection vdb-entry, technical-description
VDB-365560 | CTI Indicators (IOB, IOC, TTP, IOA) signature, permissions-required
Submit #813937 | TOTOLink CA750-PoE V6.2c.510 Command Injection third-party-advisory
https://github.com/wudipjq/my_vuln/blob/main/totolink4/vuln_56/56.md exploit
https://www.totolink.net/ product