PT-2025-43869 · Tenda · Tenda O3

Yhryhryhr_Miemie · Published 2025-10-12 · Updated 2025-10-28 · CVE-2025-12209

Positive Technologies (AI Summary)

CVSS v2.0

9.0

High

Base vector

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

Name of the Vulnerable Software and Affected Versions Tenda O3 version 1.0.0.10(2478)

Description A flaw exists in the SetValue/GetValue function within the /goform/setDhcpConfig file of the Tenda O3 router. Manipulation of the dhcpEn argument can trigger a stack-based buffer overflow, potentially allowing for remote attacks. The exploit for this issue has been publicly disclosed.

Recommendations Update to a newer version that contains a fix for this vulnerability.

Exploit

Fix

Stack Overflow

Buffer Overflow

Weakness Enumeration

CWE-121

CWE-119

Related Identifiers

BDU:2025-13525

CVE-2025-12209

Affected Products

Tenda O3

References · 13

• 🔥 https://github.com/noahze01/IoT-vulnerable/blob/main/Tenda/O3v2.0/setDhcpConfig.md · Exploit
• https://nvd.nist.gov/vuln/detail/CVE-2025-12209 · Security Note
• https://bdu.fstec.ru/vul/2025-13525 · Security Note
• https://twitter.com/CveFindCom/status/1982645873910640912 · Twitter Post
• https://t.me/CVEtracker/35780 · Telegram Post
• https://vuldb.com/?ctiid.329879 · Note
• https://twitter.com/CVEnew/status/1982665165834236379 · Twitter Post
• https://twitter.com/VulmonFeeds/status/1982683184492949611 · Twitter Post
• https://t.me/cveNotify/140676 · Telegram Post
• https://tenda.com.cn · Note
• https://vuldb.com/?id.329879 · Note
• https://twitter.com/CveTodo/status/1983085111483531391 · Twitter Post
• https://vuldb.com/?submit.673263 · Note