CVE-2026-51606

highCVSS 7.5covered by 1 sourcefirst seen 2026-07-09

An improper input handling vulnerability in the RTSP service of Tenda CP3 V3.0 (firmware V31.1.9.91) causes the device to abruptly terminate the TCP connection with a RST packet when a request containing an oversized field value is received, without returning any RFC 2326-compliant error response. This behavior affects the request-line URL field and header field values across multiple RTSP request types.

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Exploitation outlook

Low exploitation risk0.32% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 24% of all EPSS-scored CVEs.

Advisory coverage (1)

highCVE-2026-51606: An improper input handling vulnerability in the RTSP service of Tenda CP3 V3.0 (firmware V31.1…nvd · 2026-07-09

External references

NVD record for CVE-2026-51606

CVE.org record

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