CVE-2026-0640: A weakness has been identified in Tenda AC23 16.03.07.52. This affects the function sscanf of the file…
CVE-2026-0640 · Severity: high · CVSS 8.8 · Published 2026-01-06
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.
No. Junglewise Threat Intelligence has no report of CVE-2026-0640 being exploited in the wild.
How severe is CVE-2026-0640?
High severity, with a CVSS score of 8.8, published 6 January 2026.
Which products and versions are affected?
Tenda Ac23, Tenda Ac23 Firmware. The advisory does not name versions.
Is there a fix for CVE-2026-0640?
No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
Am I affected by CVE-2026-0640?
Check whether you run Tenda Ac23 or Tenda Ac23 Firmware. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.