CVE-2026-31164

Severity: medium (CVSS 6.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.3% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2026-04-23 · updated 2026-06-17
Weakness: CWE-77

Description

An issue was discovered in ToToLink A3300R firmware v17.0.0cu.557_B20221024 allowing attackers to execute arbitrary commands via the pppoeMtu parameter to /cgi-bin/cstecgi.cgi.

Affected products

Totolink A3300R: 17.0.0cu.557_b20221024

References

https://github.com/Svigo-o/TOTOLINK-Vul/tree/main/totolink-a3300r-pppoe-mtu-cmd-injection
https://github.com/Svigo-o/TOTOLINK-Vul/tree/main/totolink-a3300r-pppoe-mtu-cmd-injection

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