CVE-2026-51601
High
Description
Tenda CP3 V3.0 firmware V31.1.9.91 contains a stack-based buffer overflow in the RTSP service. The device fails to validate the length of the clock= value in the Range header field when processing a PLAY request. An unauthenticated remote attacker who has completed a standard RTSP session handshake can send a PLAY request with an excessively long clock= value to cause the RTSP service to crash.
SeverityHigh
CVSS7.5
Exploit probability—
ProductCP3 V3.0 firmware
PublishedJul 9, 2026
First seenJul 9, 2026
Weakness typeCWE-121CWE-121
How to fix
Sources list no fixed version or patch link for this vulnerability.
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| Tenda CP3 V3.0 firmware | 31.1.9.91 | — |
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