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CVE-2026-7219

Totolink N300RT formIpQoS buffer overflow

CVSS 8.6 HIGHEPSS 0.6%CWE-119CWE-120
Vexday Risk Score
41Attention
SSVC decision (CISA)
Attend
PoC available → attend closely
CVSS 8.6EPSS 0.6%KEV nãoPoC públicaNuclei —Metasploit —Patch —
Lifecycle
28 Apr 2026Published on NVD
Recommendation: Plan a near-term fix — a public PoC already exists.
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.
CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P
Affected products
Totolink · N300RT
public PoCs found — 1
cve_referencegithub.com/xiaohaiyang-ai/IoT-Vulnerability-Research/tree/main/Vendors/TOTOLINK/N300RT/formIpQoS-Bofunverified
⚠ Public resources, to assess the exposure of systems you control or are authorized to test. Test only with authorization.

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References
https://github.com/xiaohaiyang-ai/IoT-Vulnerability-Research/tree/main/Vendors/TOTOLINK/N300RT/formIpQoS-Bofhttps://vuldb.com/submit/808194https://vuldb.com/vuln/359819https://vuldb.com/vuln/359819/ctihttps://www.totolink.net/