Vulnerability Monitor

The vendors, products, and vulnerabilities you care about

CVE-2025-8940

A vulnerability was identified in Tenda AC20 up to 16.03.08.12. Affected by this vulnerability is the function strcpy of the file /goform/saveParentControlInfo. The manipulation of the argument Time leads to buffer overflow. The attack can be launched remotely. The exploit has been disclosed to the public and may be used.

Published

2025-08-14T06:15:29.180

Last Modified

2025-08-19T18:42:24.900

Status

Analyzed

Source

[email protected]

Severity

CVSSv3.1: 8.8 (HIGH)

CVSSv2 Vector

AV:N/AC:L/Au:S/C:C/I:C/A:C

Access Vector: NETWORK
Access Complexity: LOW
Authentication: SINGLE
Confidentiality Impact: COMPLETE
Integrity Impact: COMPLETE
Availability Impact: COMPLETE

Exploitability Score

8.0

Impact Score

10.0

Weaknesses

Type: Secondary
CWE-119
CWE-120

Affected Vendors & Products

Type	Vendor	Product	Version/Range	Vulnerable?
Operating System	tenda	ac20_firmware	≤ 16.03.08.12	Yes
Hardware	tenda	ac20	-	No

References

https://github.com/lin-3-start/lin-cve/blob/main/Tenda%20AC20-2/Tenda%20AC20-2.md Exploit, Third Party Advisory ([email protected])
https://github.com/lin-3-start/lin-cve/blob/main/Tenda%20AC20-2/Tenda%20AC20-2.md#poc Exploit, Third Party Advisory ([email protected])
https://vuldb.com/?ctiid.319903 Permissions Required, VDB Entry ([email protected])
https://vuldb.com/?id.319903 Third Party Advisory, VDB Entry ([email protected])
https://vuldb.com/?submit.631836 Third Party Advisory, VDB Entry ([email protected])
https://www.tenda.com.cn/ Product ([email protected])
https://github.com/lin-3-start/lin-cve/blob/main/Tenda%20AC20-2/Tenda%20AC20-2.md Exploit, Third Party Advisory (134c704f-9b21-4f2e-91b3-4a467353bcc0)