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CVE-2025-3675

TOTOLINK A3700R cstecgi.cgi setL2tpServerCfg access control

MEDIUM
5.3
CVSS Score
Published: April 16, 2025 at 07:00 AM UTC
Updated: June 17, 2026 at 09:20 AM UTC
2 products affected across 1 vendorA3700R FirmwareA3700R

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Severity
MEDIUM5.3
Exploit prediction
EPSS 0.6%
SSVC
PoC

Description

A vulnerability was found in TOTOLINK A3700R 9.1.2u.5822_B20200513. It has been rated as critical. Affected by this issue is the function setL2tpServerCfg of the file /cgi-bin/cstecgi.cgi. The manipulation leads to improper access controls. The attack may be launched remotely. The exploit has been disclosed to the public and may be used.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

A3700R Firmware· Totolink
95%
9.1.2u.5822_B202005139.1.2u.5822_b20200513
A3700R· Totolinkdevice
80%
All versions

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

References (5)

ExploitThird Party Advisory
Source: [email protected]
https://lavender-bicycle-a5a.notion.site/TOTOLINK-A3700R-setL2tpServerCfg-1cb53a41781f80319d38dc5a8e9174ae?pvs=4
SignaturePermissions Required
Source: [email protected]
https://vuldb.com/?ctiid.304964
VDB EntryTechnical DescriptionThird Party Advisory
Source: [email protected]
https://vuldb.com/?id.304964
Third Party AdvisoryVDB Entry
Source: [email protected]
https://vuldb.com/?submit.551304
Product
Source: [email protected]
https://www.totolink.net/

SSVC — Action Prioritization

SSVCPoCAutomatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

5.3MEDIUMVulDB
Vector?

Quick Info

StatusANALYZED
CWE
CWE-266CWE-284NVD-CWE-noinfo

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