PT-2026-31339 · Tenda · Ac6 Firmware

Published 2026-04-08 · Updated 2026-04-13 · CVE-2025-52221

Positive Technologies (AI Summary)

CVSS v3.1

9.8

Critical

Base vector

AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Name of the Vulnerable Software and Affected Versions Tenda AC6 version 15.03.05.16 multi

Description A buffer overflow exists in the formSetCfm() function. This issue can be triggered through the funcname, funcpara1, and funcpara2 parameters.

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

Exploit

Buffer Overflow

Memory Corruption

Weakness Enumeration

CWE-120

CWE-787

Related Identifiers

CVE-2025-52221

Affected Products

Ac6 Firmware

References · 4

• 🔥 https://github.com/faqiadegege/IoTVuln/blob/main/tendaAc6_formSetCfm_funcname_overflow/detail.md · Exploit
• https://nvd.nist.gov/vuln/detail/CVE-2025-52221 · Security Note
• https://twitter.com/CVEnew/status/2043733104159011189 · Twitter Post
• https://github.com/xiaotea/iot-vulnerability-collection/blob/main/README.md · Note