Quick answers
- Is CVE-2026-82542 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-82542 being exploited in the wild.
- How severe is CVE-2026-82542?
- Critical severity, with a CVSS score of 10, published 30 August 2026.
- Which products and versions are affected?
- Tenda HG10 300001138 (AC1200).
- Is there a fix for CVE-2026-82542?
- 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-2026-82542 attacked?
- It is attacked over the network.
- Am I affected by CVE-2026-82542?
- Check whether you run Tenda HG10 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 buffer overflow vulnerability exists in the Boa web server's formIPv6Routing function (entry address 0x004648CC) within the Tenda HG10 router. The vulnerable code uses strcpy() to copy the user-supplied destNet HTTP parameter into a fixed-size buffer without length validation. An attacker can submit an overlong destNet value via a POST request to /boaform/admin/formIPv6Routing to overflow the buffer and overwrite adjacent memory. The attack is remotely exploitable without authentication or user interaction, and exploitation has been confirmed to cause denial-of-service; arbitrary code execution may be possible depending on memory layout and runtime protections. Public exploit code is available.
Affected products
- Tenda HG10 300001138 (AC1200)
Timeline
- 2026-08-30: disclosed: CVE-2026-82542 published