TI-2025-03534 Aliases CVE-2025-3991 GHSA-53vj-jg5c-244w

TOTOLINK N150RT formWdsEncrypt buffer overflow

HIGH 73CWE-119Published 2025-04-27 · Updated 2025-04-28

Key facts

Attack vector: Network
Privileges required: Low
User interaction: None
Attack complexity: Low
Attack requirements: None
Impact type: Code execution
Confidentiality · integrity · availability: High · High · High
Fix status: No fix listed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-119 and the CVSS impact.

Summary

A vulnerability, which was classified as critical, was found in TOTOLINK N150RT 3.4.0-B20190525. This affects an unknown part of the file /boafrm/formWdsEncrypt. The manipulation of the argument submit-url leads to buffer overflow. It is possible to initiate the attack remotely. The exploit has been disclosed to the public and may be used.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV

EPSS 0.0106 64th percentileScored 2026-11-07

Public exploit Yes 1 exploit referenceTagged by the CNA and NVD

Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: Poc
Automatable: No
Technical impact: Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
TOTOLINK	N150RT	3.4.0-B20190525	—	No fix listed	CNA

N150RT VendorTOTOLINK Affected 3.4.0-B20190525 Fixed in — No fix listed CNA

CPE configurations NVD · 2

CPE	Versions	Role	Vendor
cpe:2.3:o:totolink:n150rt_firmware:3.4.0-b20190525:::::::*	3.4.0-b20190525	Vulnerable	TOTOLINK
cpe:2.3:h:totolink:n150rt:2.0:::::::*	2.0	Running on	TOTOLINK

cpe:2.3:o:totolink:n150rt_firmware:3.4.0-b20190525:*:*:*:*:*:*:* Versions 3.4.0-b20190525 Vulnerable ·TOTOLINK
cpe:2.3:h:totolink:n150rt:2.0:*:*:*:*:*:*:* Versions 2.0 Running on ·TOTOLINK

Remediation

No fixed version listed by the sources yet.

Timeline

2026-10-02 Threatist record created from CVE-2025-3991
2026-10-03 Alias added: GHSA-53vj-jg5c-244w

References

Exploit 1

https://github.com/fizz-is-on-the-way/Iot_vuls/tree/main/N150RT/BufferOverflow_formWdsEncrypt

Other 1

https://www.totolink.net/

TI-2025-03979 TOTOLINK N150RT formWsc buffer overflow CVSS 4.0HIGH 8.7
TI-2025-03536 TOTOLINK N150RT formWsc buffer overflow CVSS 4.0HIGH 8.7
TI-2025-03535 TOTOLINK N150RT formWlwds buffer overflow CVSS 4.0HIGH 8.7
TI-2025-03532 TOTOLINK N150RT formStaticDHCP buffer overflow CVSS 4.0HIGH 8.7
TI-2025-03531 TOTOLINK N150RT formPortFw buffer overflow CVSS 4.0HIGH 8.7
TI-2019-14289 On certain TOTOLINK Realtek SDK based routers, an authenticated attacker may execute… CVSS 3.1HIGH 8.8

See all 18 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences