CVE-2025-63666: Tenda AC15 v15.03.05.18_multi) issues an authentication cookie that exposes the account password hash to the client…
CVE-2025-63666 · Severity: critical · CVSS 9.8 · Published 2025-11-12
Tenda AC15 v15.03.05.18_multi) issues an authentication cookie that exposes the account password hash to the client and uses a short, low-entropy suffix as the session identifier. An attacker with network access or the ability to run JS in a victim browser can steal the cookie and replay it to access protected resources.
No. Junglewise Threat Intelligence has no report of CVE-2025-63666 being exploited in the wild.
How severe is CVE-2025-63666?
Critical severity, with a CVSS score of 9.8, published 12 November 2025.
Which products and versions are affected?
Tenda AC15, Tenda Ac15 Firmware. The advisory does not name versions.
Is there a fix for CVE-2025-63666?
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.
Am I affected by CVE-2025-63666?
Check whether you run Tenda AC15 or Tenda Ac15 Firmware. 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.