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 firmware; tenda: ac20
References5
- github.com/Madgeaaaaa/MY_VULN_2/blob/main/Tenda/VULN14/AC20_ope… ExploitThird Party Advisory
- vuldb.com/?ctiid.336389 Permissions RequiredVDB Entry
- vuldb.com/?id.336389 Third Party AdvisoryVDB Entry
- vuldb.com/?submit.712917 Third Party AdvisoryVDB Entry
- www.tenda.com.cn/ Product
Metrics
- CVSS 3.1
-
8.8
HIGH
Score source: CNA
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H - CVSS 4.0
-
7.4
HIGH
Score source: CNA
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X - EPSS — exploit probability
- 1% percentile: 55 · as of 11 November 2026
- CWE
- CWE-119CWE-120
Could this be exploited in your environment?
A patch closes the known hole. A penetration test shows what an attacker can still reach — with proof.