CVE-2026-31170 — CRITICAL (9.8)

Vulnerability Description

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

CVSS Score

9.8

CRITICAL

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

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality

HIGH

Integrity

HIGH

Availability

HIGH

Affected Products

Vendor	Product	Versions
Totolink	A3300R Firmware	17.0.0cu.557_b20221024
Totolink	A3300R	-

Related Weaknesses (CWE)

CWE-77

References

https://github.com/Svigo-o/TOTOLINK-Vul/tree/main/totolink-a3300r-stun-pass-cmd-ExploitThird Party Advisory
https://github.com/Svigo-o/TOTOLINK-Vul/tree/main/totolink-a3300r-stun-pass-cmd-ExploitThird Party Advisory

FAQ

What is CVE-2026-31170?

CVE-2026-31170 is a vulnerability with a CVSS score of 9.8 (CRITICAL). An issue was discovered in ToToLink A3300R firmware v17.0.0cu.557_B20221024 allowing attackers to execute arbitrary commands via the stun-pass parameter to /cgi-bin/cstecgi.cgi.

How severe is CVE-2026-31170?

CVE-2026-31170 has been rated CRITICAL with a CVSS base score of 9.8/10. This is considered a critical vulnerability requiring immediate attention.

Is there a patch for CVE-2026-31170?

Check the references section above for vendor advisories and patch information. Affected products include: Totolink A3300R Firmware, Totolink A3300R.