Ac15 Firmware
CVE-2025-63666
CRITICAL
Vulnerability Assessment
| Weakness |
CWE
OWASP Top 10:2025
A01:2025 - Broken Access Control
ASVS 5.0
V8 - Authorization Access control enforcement
MITRE ATT&CK
1 technique across 1 tactic: Defense Evasion The technique list with ATT&CK links and the kill-chain view is part of the Basic plan and up. |
| Impact | CVSS score of 9.8 (CRITICAL). Attack characteristics: network attack vector, low complexity, no privileges required, no user interaction not required. Public proof-of-concept exploit code is available. EPSS exploitation probability: 0.14%. |
| Exploit ScenarioDerived | This vulnerability can be exploited remotely over the network. Successful exploitation could compromise the critical-severity affected system. |
Get an e-mail when this CVE is exploited, patched or re-scored. Free account.
Alert meAnalysisAIv1 – Mar 28, 2026
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. Rated critical severity (CVSS 9.8), this vulnerability is remotely exploitable, no authentication required, low attack complexity. Public exploit code available and no vendor patch available.
RemediationAI
No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Apply vendor patches when available. Implement network segmentation and monitoring as interim mitigations.
Affects your stack
Find out whether the stacks and servers you run are on an affected version.
Checking this CVE against your own stacks and servers is part of the Basic plan and up.
Technical ContextAI · show details
This vulnerability is classified under CWE-284. 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. Affected products include: Tenda Ac15 Firmware.
Know when Ac15 Firmware gets its next vulnerability
- Watch products and get an email when something new is published
- Check this CVE against your own stack and servers
- Exploit and PoC references, threat intelligence from 22 sources
No credit card · 7-day full trial
Severity by source
AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Primary rating from NVD · only source for this CVE.
CVSS VectorNVD
Lifecycle Timeline
2DescriptionCVE.org
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.
Executive ViewAI
CVE-2025-63666 presents critical security risk, a improper access control vulnerability rated CVSS 9.8. Successful exploitation could critically impact the confidentiality, integrity, and availability of affected systems. Proof-of-concept code is publicly available, increasing the risk of exploitation. Organizations should apply vendor updates immediately when available and implement compensating controls in the interim.
Apply vendor patch. If immediate patching is not feasible: (1) Restrict access to affected endpoints; (2) Implement additional authorization checks; (3) Enable audit logging.
Threat Intelligence Overview
How this decision was reached
The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.
What every action level means
SSVC AssessmentENISA
Priority Score
Attack Technique
Authentication bypass attacks exploit flaws in the verification mechanisms that control access to systems and applications.
Affected Products (CPE)CVE.org
More in Ac15 Firmware
View allTenda AC15 v15.03.05.19 is vulnerable to Command Injection via the handler function in /goform/telnet. Rated critical se
Tenda AC15 router has a code injection in formsetUsbUnload (EPSS 1.7%) enabling unauthenticated remote code execution.
Tenda AC15 router has a command injection in formSetIptv (EPSS 1.1%) enabling unauthenticated root-level code execution.
Buffer overflow in Tenda AC15V1.0 via formSetMacFilterCfg. PoC available.
A vulnerability classified as critical was found in Tenda AC15 15.03.05.18/15.03.05.19/15.03.20. Rated critical severity
A vulnerability was found in Tenda AC15 15.03.20_multi. Rated critical severity (CVSS 9.8), this vulnerability is remote
A vulnerability was found in Tenda AC15 15.03.05.18/15.03.20_multi. Rated critical severity (CVSS 9.8), this vulnerabili
A vulnerability was found in Tenda AC15 15.03.05.18 and classified as critical. Rated critical severity (CVSS 9.8), this
A vulnerability classified as critical has been found in Tenda AC15 15.03.20_multi. Rated critical severity (CVSS 9.8),
A vulnerability was found in Tenda AC15 15.03.20_multi. Rated critical severity (CVSS 9.8), this vulnerability is remote
A vulnerability was found in Tenda AC15 15.03.20_multi. Rated critical severity (CVSS 9.8), this vulnerability is remote
A vulnerability was found in Tenda AC15 15.03.20_multi and classified as critical. Rated critical severity (CVSS 9.8), t
GitHub PoC
Exploit-DB