PT-2025-16562 · Totolink · Totolink A3700R

Wxhwxhwxh · Published 2025-04-15 · Updated 2025-04-16 · CVE-2025-3675

Positive Technologies (AI Summary)

CVSS v3.1

5.3

Medium

Base vector

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

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

Description A critical issue affects the setL2tpServerCfg function of the file /cgi-bin/cstecgi.cgi, leading to improper access controls. The attack can be launched remotely. The exploit has been disclosed to the public and may be used.

Recommendations For TOTOLINK A3700R version 9.1.2u.5822 B20200513, as a temporary workaround, consider disabling the setL2tpServerCfg function until a patch is available. Restrict access to the /cgi-bin/cstecgi.cgi file to minimize the risk of exploitation.

Exploit

Fix

Improper Access Control

Incorrect Privilege Assignment

Weakness Enumeration

CWE-284

CWE-266

Related Identifiers

BDU:2025-05803

CVE-2025-3675

Affected Products

Totolink A3700R

References · 11

• 🔥 https://lavender-bicycle-a5a.notion.site/TOTOLINK-A3700R-setL2tpServerCfg-1cb53a41781f80319d38dc5a8e9174ae?pvs=4 · Exploit
• https://bdu.fstec.ru/vul/2025-05803 · Security Note
• https://osv.dev/vulnerability/CVE-2025-3675 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2025-3675 · Security Note
• https://totolink.net · Note
• https://vuldb.com/?submit.551304 · Note
• https://t.me/cvedetector/23063 · Telegram Post
• https://twitter.com/CVEnew/status/1912411137456357535 · Twitter Post
• https://vuldb.com/?id.304964 · Note
• https://t.me/cvetracker/21722 · Telegram Post
• https://vuldb.com/?ctiid.304964 · Note