CVE-2026-51606

HIGH

Tenda CP3 V31.1.9.91 - Denial of Service via Oversized RTSP Field Values

Title source: llm

Description

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.

References (1)

Core 1

Core References

https://github.com/kkkk2222874/cve_ID_report/blob/main/Tenda_CP3_V3.0/Tenda_CP3_V3.0_5th/README.md

View Writeup ZIP pw:eip

Scores

CVSS v3 7.5

EPSS 0.0032

EPSS Percentile 24.9%

Attack Vector NETWORK

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CISA SSVC

Vulnrichment

Exploitation poc

Automatable yes

Technical Impact partial

Details

CWE

CWE-20

Status published

Published Jul 09, 2026

Tracked Since Jul 09, 2026