CVE-2026-31170: An issue was discovered in ToToLink A3300R firmware v17.0.0cu.557_B20221024 allowing attackers to execute arbitrary…

CVE-2026-31170 · Severity: critical · CVSS 9.8 · Published 2026-04-09

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.

Technologies: TOTOLINK A3300R, TOTOLINK A3300r Firmware. Vendors: TOTOLINK.

Quick answers

Is CVE-2026-31170 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2026-31170 being exploited in the wild.
How severe is CVE-2026-31170?
Critical severity, with a CVSS score of 9.8, published 9 April 2026.
Which products and versions are affected?
TOTOLINK A3300R, TOTOLINK A3300r Firmware. The advisory does not name versions.
Is there a fix for CVE-2026-31170?
No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
Am I affected by CVE-2026-31170?
Check whether you run TOTOLINK A3300R or TOTOLINK A3300r Firmware. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

Affected products

  • TOTOLINK A3300R
  • TOTOLINK A3300r Firmware

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