Quick answers
- Is CVE-2026-86149 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-86149 being exploited in the wild.
- How severe is CVE-2026-86149?
- Critical severity, with a CVSS score of 9.1, published 5 September 2026.
- Which products and versions are affected?
- Tenda CP3 27.5.57.101.
- Is there a fix for CVE-2026-86149?
- 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-2026-86149 attacked?
- It is attacked over the network.
- Am I affected by CVE-2026-86149?
- 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
This vulnerability is a classic OS command injection flaw in the NetCheckPing.cpp component of Tenda CP3. The vulnerable code fails to properly sanitize the interface_name or host parameter before passing it to system commands, allowing an attacker to concatenate shell metacharacters and arbitrary commands. The attack is network-accessible and requires no prior authentication or user interaction. Successful exploitation allows remote code execution with the privileges of the affected service, typically enabling full system takeover. A patch or upgrade is recommended; check Tenda's official security advisories for available updates.
Affected products
- Tenda CP3 27.5.57.101
Timeline
- 2026-09-05: disclosed