CVE-2025-63666

CRITICAL

Tenda AC15 v15.03.05.18_multi - Info Disclosure

Title source: llm
STIX 2.1

Exploitation Summary

EIP tracks 1 public exploit for CVE-2025-63666. PoCs published by Remenis.

AI-analyzed exploit summary The repository documents CVE-2025-63666, a vulnerability in Tenda AC15 firmware V15.03.05.18_multi where authentication cookies expose password hashes and lack security flags, enabling session hijacking and offline brute-force attacks.

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.

Exploits (1)

nomisec WRITEUP 1 stars
by Remenis · poc
https://github.com/Remenis/CVE-2025-63666

The repository documents CVE-2025-63666, a vulnerability in Tenda AC15 firmware V15.03.05.18_multi where authentication cookies expose password hashes and lack security flags, enabling session hijacking and offline brute-force attacks.

Classification
Writeup 100%
Attack Type
Auth Bypass
Complexity
Trivial
Reliability
Reliable
Target: Tenda AC15 firmware V15.03.05.18_multi
Auth required
Prerequisites: Access to the Tenda AC15 login interface · Valid credentials to generate the authentication cookie
devstral-2 · analyzed Feb 16, 2026 Full analysis →

References (1)

Core 1
Core References
Exploit, Mitigation, Third Party Advisory
https://github.com/Remenis/CVE-2025-63666

Scores

CVSS v3 9.8
EPSS 0.0042
EPSS Percentile 33.5%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CISA SSVC

Vulnrichment
Exploitation none
Automatable yes
Technical Impact total

Details

CWE
CWE-284
Status published
Products (1)
tenda/ac15_firmware 15.03.05.18
Published Nov 12, 2025
Tracked Since Feb 18, 2026