CVE-2025-63666

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 v3.1 Score

9.8

CRITICAL

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

Weakness Type (CWE)

CWE-284 CWE-284

Affected Products

Vendor	Product	Versions
tenda	ac15_firmware	All
tenda	ac15	All

References

Exploits

https://github.com/Remenis/CVE-2025-63666

Frequently Asked Questions

What is CVE-2025-63666? +

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. It has a CVSS v3.1 base score of 9.8 (CRITICAL).

How severe is CVE-2025-63666? +

CVE-2025-63666 has a CVSS v3.1 score of 9.8 out of 10, rated CRITICAL. This is a critical vulnerability that should be patched immediately.

What products are affected by CVE-2025-63666? +

CVE-2025-63666 affects products from tenda, specifically: ac15, ac15_firmware. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2025-63666? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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