PT-2026-35922 · Totolink · A3002Ru V3

0Xmania · Published 2026-04-29 · Updated 2026-04-30 · CVE-2026-36837

Positive Technologies (AI Summary)

CVSS v3.1

7.5

High

Base vector

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

Name of the Vulnerable Software and Affected Versions TOTOLINK A3002RU V3 versions prior to V3.0.0-B20220304.1804

Description A stack-based buffer overflow exists in the formMapDelDevice() function. This issue occurs via the hostname parameter. A stack-based buffer overflow is a condition where a program writes more data to a buffer located on the stack than the buffer is allocated to hold, potentially leading to crashes or arbitrary code execution.

Recommendations Update to a version newer than V3.0.0-B20220304.1804. As a temporary workaround, restrict access to the formMapDelDevice() function to minimize the risk of exploitation.

Exploit

Fix

Stack Overflow

Weakness Enumeration

CWE-121

Related Identifiers

CVE-2026-36837

Affected Products

A3002Ru V3

References · 4

• 🔥 https://github.com/0xmania/cve/tree/main/TOTOLINK-A3002RUV3.0-boa-formMapDelDevice-StackOverflow · Exploit
• https://nvd.nist.gov/vuln/detail/CVE-2026-36837 · Security Note
• https://twitter.com/vuldb/status/2049701569432899868 · Twitter Post
• https://twitter.com/CVEnew/status/2049594410942251185 · Twitter Post