Vulnerability · Published Apr 28, 2026 · Assigned by VulDB
CVE-2026-7219Totolink N300RT formIpQoS buffer overflow
High 7.2
In plain English
A high-severity buffer overflow in N300RT from Totolink. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.6% (higher than 48% of all known vulnerabilities).
Severity (CVSS 3.1)7.2High
Exploit odds (30 days)0.6%top 51.7% of all CVEs
Exploited in the wildNo reportsCISA SSVC: poc
Attack toolingNoneno public tooling known
Official description
A flaw has been found in Totolink N300RT 3.4.0-B20250430. This affects an unknown function of the file /boafrm/formIpQoS. Executing a manipulation of the argument entry_name can lead to buffer overflow. The attack may be performed from remote. The exploit has been published and may be used.
Affected products (as reported)
Weakness: CWE-120, CWE-119 · Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H/E:P/RL:X/RC:R
References
- VDB-359819 | Totolink N300RT formIpQoS buffer overflow vdb-entry, technical-description
- VDB-359819 | CTI Indicators (IOB, IOC, IOA) signature, permissions-required
- Submit #808194 | TOTOLINK N300RT Router V3.4.0-B20250430 Buffer Overflow third-party-advisory
- https://github.com/xiaohaiyang-ai/IoT-Vulnerability-Research/tree/main/Vendors/TOTOLINK/N300RT/formIpQoS-Bof exploit
- https://www.totolink.net/ product