CVE-2025-34319: TOTOLINK N300RT <= V2.1.8-B20201030.1539 Boa formWsc RCE

Severity: critical (CVSS 9.3 v4.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 4.4% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2025-12-03 · updated 2026-10-18
Weakness: CWE-78

Description

TOTOLINK N300RT wireless router firmware versions prior to V3.4.0-B20250430 (discovered in V2.1.8-B20201030.1539) contain an OS command injection vulnerability in the Boa formWsc handling functionality. An unauthenticated attacker can send specially crafted requests to trigger command execution via the targetAPSsid request parameter.

Affected products

Totolink N300RT: before V3.4.0-B20250430 — fixed in V3.4.0-B20250430

How to fix

Upgrade to a fixed version: Totolink N300RT V3.4.0-B20250430. Check the vendor advisory for mitigations.

References

https://totolink.tw/support_view/N300RT
https://www.totolink.net/home/menu/detail/menu_listtpl/download/id/154/ids/36.html
https://www.vulncheck.com/advisories/totolink-n300rt-boa-formwsc-rce

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