CVE-2025-14656: Tenda AC20 openSchedWifi httpd buffer overflow

Severity: high (CVSS 8.8 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.7% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2025-12-14 · updated 2026-10-07
Weakness: CWE-119

Description

A weakness has been identified in Tenda AC20 16.03.08.12. This affects the function httpd of the file /goform/openSchedWifi. Executing a manipulation of the argument schedStartTime/schedEndTime can lead to buffer overflow. The attack may be performed from remote. The exploit has been made available to the public and could be used for attacks.

Affected products

Tenda AC20: 16.03.08.12

References

https://github.com/Madgeaaaaa/MY_VULN_2/blob/main/Tenda/VULN14/AC20_openSchedWifi.md
https://vuldb.com/?ctiid.336389
https://vuldb.com/?id.336389
https://vuldb.com/?submit.712917
https://www.tenda.com.cn/

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