# CVE-2026-51604: Tenda CP3 stack overflow in RTSP service

Source: https://junglewise.ai/threats/cve-2026-51604-tenda-cp3-stack-overflow-in-rtsp-service  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-07-09. Updated: 2026-07-09  
License: CC BY 4.0 with a link back

CVE-2026-51604 · Severity: info · CVSS 7.5 · Published 2026-07-09

A security vulnerability has been identified in the Tenda CP3 security camera. This flaw affects the Real Time Streaming Protocol (RTSP) service, which is responsible for handling video streams. An unauthorized person could remotely crash the camera, causing it to stop recording or providing a live feed, which could disrupt security monitoring operations.

Technologies: [Tenda CP3](https://junglewise.ai/threats/technologies/cp3). Vendors: [Tenda](https://junglewise.ai/threats/vendors/tenda).

## Quick answers

**Is CVE-2026-51604 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-51604 being exploited in the wild.

**How severe is CVE-2026-51604?** Informational severity, with a CVSS score of 7.5, published 9 July 2026.

**Which products and versions are affected?** Tenda CP3 V31.1.9.91.

**Is there a fix for CVE-2026-51604?** No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

**How is CVE-2026-51604 attacked?** It is attacked over the network, in a network appliance.

**Am I affected by CVE-2026-51604?** Check whether you run Tenda CP3 at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## Technical details

A stack-based buffer overflow exists within the RTSP service of the Tenda CP3 V3.0 security camera running firmware version V31.1.9.91. The vulnerability is triggered when the service processes a specially crafted RTSP 'PLAY' request. An unauthenticated remote attacker can exploit this by sending a malicious packet over the network to the device. Successful exploitation results in a crash of the RTSP service or the entire device, leading to a denial-of-service (DoS) condition. While the primary impact is availability, stack overflows can sometimes lead to remote code execution depending on the presence of modern exploit mitigations.

## Affected products

- Tenda CP3 V3.0 V31.1.9.91

## Timeline

- 2026-07-09: disclosed
- 2026-07-09: advisory

## References

- [https://github.com/kkkk2222874/cve_ID_report/blob/main/Tenda_CP3_V3.0/Tenda_CP3_V3.0_6th/README.md](https://github.com/kkkk2222874/cve_ID_report/blob/main/Tenda_CP3_V3.0/Tenda_CP3_V3.0_6th/README.md)

## Related threats

- [Tenda CP3 privilege escalation in redirect server](https://junglewise.ai/threats/cve-2026-86153-tenda-cp3-privilege-escalation-in-redirect-server)
- [Tenda CP3 OS command injection in AutoAddWifi](https://junglewise.ai/threats/cve-2026-86152-tenda-cp3-os-command-injection-in-autoaddwifi)
- [Tenda CP3 OS command injection in Network Configuration Management](https://junglewise.ai/threats/cve-2026-86151-tenda-cp3-os-command-injection-in-network-configuration)
- [Tenda CP3 hard-coded credentials in hostapd configuration](https://junglewise.ai/threats/cve-2026-86150-tenda-cp3-hard-coded-credentials-in-hostapd-configuration)
- [Tenda CP3 OS command injection via interface_name argument](https://junglewise.ai/threats/cve-2026-86149-tenda-cp3-os-command-injection-via-interface-name-argument)