PT-2025-35506 · Tenda · Tenda Ac20

Bedivere · Published 2025-08-25 · Updated 2025-09-05 · CVE-2025-9791

Positive Technologies (AI Summary)

CVSS v2.0

10

Critical

Base vector

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

Name of the Vulnerable Software and Affected Versions Tenda AC20 version 16.03.08.05

Description A stack-based buffer overflow exists due to the manipulation of the wanMTU argument in the file /goform/fromAdvSetMacMtuWan. Remote exploitation is possible. The exploit has been made publicly available.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Exploit

Memory Corruption

Stack Overflow

Buffer Overflow

Weakness Enumeration

CWE-787

CWE-121

CWE-119

CWE-120

Related Identifiers

BDU:2025-10937

CVE-2025-9791

Affected Products

Tenda Ac20

References · 16

• 🔥 https://github.com/Cpppq43/Tenda/blob/main/Tenda_AC20_V16.03.08.05.md · Exploit
• 🔥 https://github.com/Cpppq43/Tenda/blob/main/Tenda_AC20_V16.03.08.05.md#poc · Exploit
• https://osv.dev/vulnerability/CVE-2025-9791 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2025-9791 · Security Note
• https://bdu.fstec.ru/vul/2025-10937 · Security Note
• https://vuldb.com/?ctiid.322106 · Note
• https://twitter.com/ZeroPathLabs/status/1962603726331388009 · Twitter Post
• https://vuldb.com/?id.322106 · Note
• https://twitter.com/CveFindCom/status/1963979861363429626 · Twitter Post
• https://t.me/purp_sec/1070 · Telegram Post
• https://tenda.com.cn · Note
• https://t.me/cveNotify/134040 · Telegram Post
• https://t.me/CVEtracker/31451 · Telegram Post
• https://twitter.com/CVEnew/status/1962597610121822608 · Twitter Post
• https://vuldb.com/?submit.641088 · Note