CVE-2025-69766
CRITICAL
2026-01-21
[email protected]
9.8
CVSS 3.1
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CVSS Vector
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
Lifecycle Timeline
3
Analysis Generated
Mar 12, 2026 - 21:54 vuln.today
PoC Detected
Jan 26, 2026 - 20:38 vuln.today
Public exploit code
CVE Published
Jan 21, 2026 - 18:16 nvd
CRITICAL 9.8
Description
Tenda AX3 firmware v16.03.12.11 contains a stack-based buffer overflow in the formGetIptv function due to improper handling of the citytag stack buffer, which may result in memory corruption and remote code execution.
Analysis
Tenda AX3 firmware has a third stack-based buffer overflow in formGetIptv, allowing unauthenticated remote code execution through the router's web interface.
Technical Context
The formGetIptv function in Tenda AX3 firmware v16.03.12.11 has a CWE-121 stack-based buffer overflow due to improper handling of input parameters, the third overflow discovered in IPTV-related handlers.
Affected Products
['Tenda AX3 firmware v16.03.12.11']
Remediation
Update firmware. Disable IPTV features if not used. Segment IoT/router management networks.
Priority Score
69
Low
Medium
High
Critical
KEV: 0
EPSS: +0.4
CVSS: +49
POC: +20
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External POC / Exploit Code
Leaving vuln.today
Destination URL
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