A vulnerability classified as critical has been found in Tenda AC20 up to 16.03.08.12. Affected is an unknown function of the file /goform/SetSysTimeCfg of the component httpd. The manipulation of the argument timeZone leads to buffer overflow. It is possible to launch the attack remotely. The exploit has been disclosed to the public and may be used.

Metrics

Attack Vector Network

Attack Complexity Low

Privileges Required Low

Attack Requirements None

User Interaction None

Vulnerable System Confidentiality Impact High

Vulnerable System Integrity Impact High

Vulnerable System Availability Impact High

Subsequent System Confidentiality Impact None

Subsequent System Integrity Impact None

Subsequent System Availability Impact None

Attack Vector Network

Attack Complexity Low

Privileges Required Low

Scope Unchanged

Confidentiality Impact High

Integrity Impact High

Availability Impact High

User Interaction None

Attack Vector Network

Attack Complexity Low

Privileges Required Low

Scope Unchanged

Confidentiality Impact High

Integrity Impact High

Availability Impact High

User Interaction None

Access Vector Network

Access Complexity Low

Authentication Single

Confidentiality Impact Complete

Integrity Impact Complete

Availability Impact Complete

This CVE is not in the KEV list.

Exploitation poc

Automatable no

Technical Impact partial

Affected Vendors & Products

Vendors Products
Tenda
  • Ac20
  • Ac20 Firmware

Configuration 1 [-]

AND
cpe:2.3:o:tenda:ac20_firmware:16.03.08.12:*:*:*:*:*:*:*
cpe:2.3:h:tenda:ac20:-:*:*:*:*:*:*:*

No data.

References
Link Providers
https://github.com/CH13hh/cve/blob/main/tenda1.md cve-icon cve-icon
https://vuldb.com/?ctiid.317574 cve-icon cve-icon
https://vuldb.com/?id.317574 cve-icon cve-icon
https://vuldb.com/?submit.620625 cve-icon cve-icon
https://www.tenda.com.cn/ cve-icon cve-icon
History

Tue, 05 Aug 2025 19:30:00 +0000

Type Values Removed Values Added
First Time appeared Tenda ac20 Firmware
CPEs cpe:2.3:h:tenda:ac20:-:*:*:*:*:*:*:*
cpe:2.3:o:tenda:ac20_firmware:16.03.08.12:*:*:*:*:*:*:*
Vendors & Products Tenda ac20 Firmware

Sat, 26 Jul 2025 12:15:00 +0000

Type Values Removed Values Added
First Time appeared Tenda
Tenda ac20
Vendors & Products Tenda
Tenda ac20

Fri, 25 Jul 2025 15:15:00 +0000

Type Values Removed Values Added
Description A vulnerability classified as critical has been found in Tenda AC20 up to 16.03.08.12. Affected is an unknown function of the file /goform/SetSysTimeCfg of the component httpd. The manipulation of the argument timeZone leads to buffer overflow. It is possible to launch the attack remotely. The exploit has been disclosed to the public and may be used.
Title Tenda AC20 httpd SetSysTimeCfg buffer overflow
Weaknesses CWE-119
CWE-120
References
Metrics cvssV2_0

{'score': 9, 'vector': 'AV:N/AC:L/Au:S/C:C/I:C/A:C/E:POC/RL:ND/RC:UR'}

cvssV3_0

{'score': 8.8, 'vector': 'CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:X/RC:R'}

cvssV3_1

{'score': 8.8, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:X/RC:R'}

cvssV4_0

{'score': 8.7, 'vector': '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'}

ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'poc', 'Technical Impact': 'partial'}, 'version': '2.0.3'}
cve-icon MITRE

Status: PUBLISHED

Assigner: VulDB

Published: 2025-07-25T15:02:07.280Z

Updated: 2025-07-25T15:11:10.192Z

Reserved: 2025-07-25T06:55:58.644Z

Link: CVE-2025-8160

cve-icon Vulnrichment

Updated: 2025-07-25T15:11:02.452Z

cve-icon NVD

Status : Analyzed

Published: 2025-07-25T15:15:30.330

Modified: 2025-08-05T19:21:50.883

Link: CVE-2025-8160

cve-icon Redhat

No data.