# CVE-2025-63666: Tenda AC15 v15.03.05.18_multi) issues an authentication cookie that exposes the account password hash to the client…

Source: https://junglewise.ai/threats/cve-2025-63666-tenda-ac15-v15-03-05-18-multi-issues-an-authentication-cookie  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2025-11-12  
License: CC BY 4.0 with a link back

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.

Technologies: [Tenda AC15](https://junglewise.ai/threats/technologies/ac15), [Tenda Ac15 Firmware](https://junglewise.ai/threats/technologies/ac15-firmware). Vendors: [Tenda](https://junglewise.ai/threats/vendors/tenda).

## Quick answers

**Is CVE-2025-63666 exploited in the wild?** 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.

## Affected products

- Tenda AC15
- Tenda Ac15 Firmware

## Related threats

- [Tenda AC15 weak password requirements in Samba configuration](https://junglewise.ai/threats/cve-2026-11493-tenda-ac15-weak-password-requirements-in-samba-configuration)
- [Tenda AC15 stack buffer overflow in SysToolChangePwd](https://junglewise.ai/threats/cve-2026-5830-tenda-ac15-stack-buffer-overflow-in-systoolchangepwd)
- [A vulnerability has been found in Tenda AC15 15.03.05.19. This affects the function formSetCfm of the file…](https://junglewise.ai/threats/cve-2026-4975-a-vulnerability-has-been-found-in-tenda-ac15-15-03-05-19-this)
- [Tenda AC15 stack overflow in fromSetIpMacBind](https://junglewise.ai/threats/cve-2025-55564-tenda-ac15-stack-overflow-in-fromsetipmacbind)