CVE-2026-5177: Totolink A3300R cstecgi.cgi setWiFiBasicCfg command injection

Severity: high (CVSS 8.8 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 2.6% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2026-03-31 · updated 2026-06-17
Weakness: CWE-74

Description

A weakness has been identified in Totolink A3300R 17.0.0cu.557_b20221024. Affected by this vulnerability is the function setWiFiBasicCfg of the file /cgi-bin/cstecgi.cgi. Executing a manipulation of the argument rxRate can lead to command injection. The attack may be launched remotely. The exploit has been made available to the public and could be used for attacks.

Affected products

Totolink A3300R: 17.0.0cu.557_b20221024

References

https://github.com/LvHongW/Vuln-of-totolink_A3300R/tree/main/A3300R_rxRate_cmd_inject
https://vuldb.com/submit/779146
https://vuldb.com/vuln/354245
https://vuldb.com/vuln/354245/cti
https://www.totolink.net/

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