CVE-2026-0640

HIGH
2026-01-06 [email protected]
8.8
CVSS 3.1
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CVSS Vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
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 15, 2026 - 19:17 vuln.today
Public exploit code
CVE Published
Jan 06, 2026 - 16:15 nvd
HIGH 8.8

Tags

Buffer Overflow Ac23 Firmware

Description

A weakness has been identified in Tenda AC23 16.03.07.52. This affects the function sscanf of the file /goform/PowerSaveSet. Executing a manipulation of the argument Time can lead to buffer overflow. The attack can be launched remotely. The exploit has been made available to the public and could be used for attacks.

Analysis

Buffer overflow in Tenda AC23 firmware version 16.03.07.52 allows remote attackers with low privileges to achieve complete system compromise through a malformed Time parameter in the /goform/PowerSaveSet function. Public exploit code exists for this vulnerability, creating immediate risk to affected devices. …

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Remediation

Within 7 days: Identify all affected systems and apply vendor patches promptly. Monitor vendor channels for patch availability.

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Priority Score

64
Low Medium High Critical
KEV: 0
EPSS: +0.1
CVSS: +44
POC: +20

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CVE-2026-0640 vulnerability details – vuln.today
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