# CVE-2026-79389: Trueview T18161 S improper MQTT message verification

Source: https://junglewise.ai/threats/cve-2026-79389-trueview-t18161-s-improper-mqtt-message-verification  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-09-04. Updated: 2026-09-26  
License: CC BY 4.0 with a link back

CVE-2026-79389 · Severity: high · CVSS 7.4 · Published 2026-09-04

Trueview T18161 S is a network-connected security camera that uses MQTT messaging to receive and execute remote commands such as pan-tilt-zoom (PTZ) control. An attacker on the network can intercept MQTT messages, replay them, or modify security-related fields (nonce, timestamp, signature) without validation, allowing unauthorized commands to be executed on the camera.

Vendors: [Trueview](https://junglewise.ai/threats/vendors/trueview).

## Quick answers

**Is CVE-2026-79389 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-79389 being exploited in the wild.

**How severe is CVE-2026-79389?** High severity, with a CVSS score of 7.4, published 4 September 2026.

**Which products and versions are affected?** Trueview T18161 S 6.0.23.4.

**Is there a fix for CVE-2026-79389?** 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-2026-79389 attacked?** It is attacked over the network.

**Am I affected by CVE-2026-79389?** Check whether you run Trueview T18161 S 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

The vulnerability is an improper verification / insufficient validation of MQTT message integrity and replay protection. The Trueview T18161 S firmware 6.0.23.4 receives MQTT messages containing security-related fields (nonce, time, sign) that are intended to provide message authenticity, integrity, and replay protection, but the device does not adequately enforce validation of these fields before executing commands. An attacker with network access to the MQTT broker (typically TCP/1883) can capture legitimate MQTT messages and replay them or modify the security-related parameters; the device accepts both replayed and modified messages and executes the associated PTZ operations. The root cause is the lack of proper cryptographic binding and strict validation of security parameters before processing commands. No patch is currently documented as available.

## Affected products

- Trueview T18161 S 6.0.23.4

## Timeline

- 2026-09-04: disclosed

## References

- [https://github.com/EmbdCDACHyd/CVE/tree/main/CVE-2026-79389](https://github.com/EmbdCDACHyd/CVE/tree/main/CVE-2026-79389)