Quick answers
- Is CVE-2026-86151 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-86151 being exploited in the wild.
- How severe is CVE-2026-86151?
- Critical severity, with a CVSS score of 9.1, published 6 September 2026.
- Which products and versions are affected?
- Tenda CP3 27.5.57.101.
- Is there a fix for CVE-2026-86151?
- 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-2026-86151 attacked?
- It is attacked over the network.
- Am I affected by CVE-2026-86151?
- 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
The vulnerability exists in function sub_2F77E8 within Apis/system.c of the Tenda CP3 Network Configuration Management component. It is an OS command injection flaw that arises from insufficient input sanitization when processing network configuration parameters. The vulnerability is remotely exploitable without requiring authentication or user interaction. A successful exploit allows arbitrary command execution with device privileges, potentially leading to full system compromise, data exfiltration, or lateral movement within the network. Patches for version 27.5.57.101 should be available from Tenda.
Affected products
- Tenda CP3 27.5.57.101
Timeline
- 2026-09-06: disclosed