CVE-2025-63666 — CRITICAL (9.8)

Vulnerability Description

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.

CVSS Score

9.8

CRITICAL

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality

HIGH

Integrity

HIGH

Availability

HIGH

Affected Products

Vendor	Product	Versions
Tenda	Ac15 Firmware	15.03.05.18
Tenda	Ac15	-

Related Weaknesses (CWE)

CWE-284

References

https://github.com/Remenis/CVE-2025-63666ExploitMitigationThird Party Advisory

FAQ

What is CVE-2025-63666?

CVE-2025-63666 is a vulnerability with a CVSS score of 9.8 (CRITICAL). 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 net...

How severe is CVE-2025-63666?

CVE-2025-63666 has been rated CRITICAL with a CVSS base score of 9.8/10. This is considered a critical vulnerability requiring immediate attention.

Is there a patch for CVE-2025-63666?

Check the references section above for vendor advisories and patch information. Affected products include: Tenda Ac15 Firmware, Tenda Ac15.