CVE-2026-7503: code-projects for Plugin cstecgi.cgi setWiFiMultipleConfig buffer overflow

Severity: high (CVSS 8.8 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.4% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-04-30 · updated 2026-10-26
Weakness: CWE-119

Description

A vulnerability was detected in code-projects for Plugin 4.1.2cu.5137. The impacted element is the function setWiFiMultipleConfig in the library /lib/cste_modules/wireless.so of the file /cgi-bin/cstecgi.cgi. The manipulation of the argument wepkey2 results in buffer overflow. The attack can be launched remotely. The exploit is now public and may be used.

Affected products

code-projects for Plugin: 4.1.2cu.5137

References

https://code-projects.org/
https://github.com/xyh4ck/iot_poc/blob/main/TOTOLINK/A800R/02_Buffer_Overflow_setWiFiMultipleConfig.md
https://vuldb.com/submit/803120
https://vuldb.com/vuln/360313
https://vuldb.com/vuln/360313/cti

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