PT-2025-43917 · Totolink · Totolink A3300R

Wxhwxhwxh · Published 2025-10-12 · Updated 2025-10-28 · CVE-2025-12258

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 TOTOLINK A3300R version 17.0.0cu.557 B20221024

Description A flaw exists in TOTOLINK A3300R that could lead to a stack-based buffer overflow. The issue is located in the setOpModeCfg function within the /cgi-bin/cstecgi.cg file, specifically within the POST Parameter Handler component. Manipulation of the opmode argument can trigger the overflow, and the attack can be carried out remotely.

Recommendations Update TOTOLINK A3300R to a version newer than 17.0.0cu.557 B20221024.

Exploit

Fix

Stack Overflow

Buffer Overflow

Weakness Enumeration

CWE-121

CWE-119

Related Identifiers

BDU:2025-13501

CVE-2025-12258

Affected Products

Totolink A3300R

References · 11

• 🔥 https://github.com/noahze01/IoT-vulnerable/blob/main/TOTOLink/A3300R/setOpModeCfg.md · Exploit
• https://osv.dev/vulnerability/CVE-2025-12258 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2025-12258 · Security Note
• https://bdu.fstec.ru/vul/2025-13501 · Security Note
• https://twitter.com/CveTodo/status/1983067525341446641 · Twitter Post
• https://t.me/cveNotify/140428 · Telegram Post
• https://t.me/CVEtracker/35821 · Telegram Post
• https://totolink.net · Note
• https://vuldb.com/?submit.673725 · Note
• https://vuldb.com/?id.329929 · Note
• https://vuldb.com/?ctiid.329929 · Note