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CRITICAL

CVE-2026-0640

CVSS v3

9.8

CRITICAL

EPSS Score

3.4 %

exploit probability, as of 2026-09-25

CISA KEV

No

known exploited

Exploitation

—

SSVC status

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.

Technical details

Published
2026-01-06

Frequently asked questions

What is CVE-2026-0640?

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.

Is CVE-2026-0640 actively exploited?

Active exploitation of CVE-2026-0640 has not been confirmed. Its EPSS score was 3.4% on 2026-09-25, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2026-0640?

CVE-2026-0640 has a CVSS v3 base score of 9.8 (CRITICAL severity).

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