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CVE-2026-7218

Totolink N300RT libapmib.so formWsc is_cmd_string_valid buffer overflow

CVSS 8.6 HIGHEPSS 0.5%CWE-119CWE-120
Vexday Risk Score
41Attention
SSVC decision (CISA)
Attend
PoC available → attend closely
CVSS 8.6EPSS 0.5%KEV nãoPoC públicaNuclei —Metasploit —Patch —
Lifecycle
28 Apr 2026Published on NVD
Recommendation: Plan a near-term fix — a public PoC already exists.
A vulnerability was detected in Totolink N300RT 3.4.0-B20250430. The impacted element is the function is_cmd_string_valid of the file /boafrm/formWsc of the component libapmib.so. Performing a manipulation of the argument localPin results in buffer overflow. The attack is possible to be carried out remotely. The exploit is now public 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/TOTOLINK-N300RT-Buffer-Overflowunverified
⚠ 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/TOTOLINK-N300RT-Buffer-Overflowhttps://vuldb.com/submit/802127https://vuldb.com/vuln/359818https://vuldb.com/vuln/359818/ctihttps://www.totolink.net/