PT-2025-16556 · Totolink · Totolink A3700R

Yhryhryhr_Tutu · Published 2025-04-15 · Updated 2025-04-16 · CVE-2025-3667

Positive Technologies (AI Summary)

CVSS v4.0

6.9

Medium

Base vector

AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Name of the Vulnerable Software and Affected Versions TOTOLINK A3700R version 9.1.2u.5822 B20200513

Description A critical issue affects the setUPnPCfg function of the file /cgi-bin/cstecgi.cgi, leading to improper access controls. The manipulation can be initiated remotely. The exploit has been disclosed to the public and may be used. The vendor was contacted early about this disclosure but did not respond.

Recommendations As a temporary workaround, consider disabling the setUPnPCfg function until a patch is available. Restrict access to the /cgi-bin/cstecgi.cgi file to minimize the risk of exploitation. At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Exploit

RCE

Improper Access Control

Incorrect Privilege Assignment

Weakness Enumeration

CWE-284

CWE-266

Related Identifiers

BDU:2025-05799

CVE-2025-3667

Affected Products

Totolink A3700R

References · 12

• 🔥 https://lavender-bicycle-a5a.notion.site/TOTOLINK-A3700R-setUPnPCfg-1cb53a41781f802b8b16f973366ee5e3?pvs=4 · Exploit
• https://bdu.fstec.ru/vul/2025-05799 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2025-3667 · Security Note
• https://osv.dev/vulnerability/CVE-2025-3667 · Vendor Advisory
• https://twitter.com/CVEnew/status/1912366342834913592 · Twitter Post
• https://t.me/cvedetector/23054 · Telegram Post
• https://t.me/cvetracker/21717 · Telegram Post
• https://vuldb.com/?id.304845 · Note
• https://vuldb.com/?submit.551299 · Note
• https://vuldb.com/?ctiid.304845 · Note
• https://totolink.net · Note
• https://twitter.com/VulmonFeeds/status/1912426482149765411 · Twitter Post