CVE-2026-31181

9.8 criticalEPSS 0.6%

Critical (9.8) in totolink a3300r firmware. EPSS 0.6% chance of exploitation in the next 30 days.

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

Severity

CVSS 3.1

9.8 critical

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS: 0.6% chance of exploitation in the next 30 days; higher than 47% of CVEs (scores of 2026-10-31)
CWE: CWE-78
Published: 2026-04-23
Modified: 2026-06-17
Record from: the NVD, synced 2026-10-19

Affected

totolink:a3300r_firmware

References

https://github.com/Svigo-o/TOTOLINK-Vul/tree/main/totolink-a3300r-stun-server-addr-cmd-injection
https://github.com/Svigo-o/TOTOLINK-Vul/tree/main/totolink-a3300r-stun-server-addr-cmd-injection

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