TI-2025-41158 Aliases CVE-2025-67188 GHSA-wv35-4hfx-h763

A buffer overflow vulnerability exists in TOTOLINK A950RG V4.1.2cu.5204_B20210112.

HIGH 82CWE-120Published 2026-02-03 · Updated 2026-02-05

Key facts

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

Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA. Impact type from CWE-120 and the CVSS impact.

Summary

A buffer overflow vulnerability exists in TOTOLINK A950RG V4.1.2cu.5204_B20210112. The issue resides in the setRadvdCfg interface of the /lib/cste_modules/ipv6.so module. The function fails to properly validate the length of the user-controlled radvdinterfacename parameter, allowing remote attackers to trigger a stack buffer overflow.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV

EPSS 0.00683 52nd percentileScored 2026-11-07

Public exploit Yes 1 exploit referenceTagged by NVD

Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: Poc
Automatable: Yes
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
—	—	all versions	—	No fix listed	CNA

— Vendor— Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 2

CPE	Versions	Role	Vendor
cpe:2.3:o:totolink:a950rg_firmware:4.1.2cu.5204_b20210112:::::::*	4.1.2cu.5204_b20210112	Vulnerable	TOTOLINK
cpe:2.3:h:totolink:a950rg:-:::::::*	not specified by NVD	Running on	TOTOLINK

cpe:2.3:o:totolink:a950rg_firmware:4.1.2cu.5204_b20210112:*:*:*:*:*:*:* Versions 4.1.2cu.5204_b20210112 Vulnerable ·TOTOLINK
cpe:2.3:h:totolink:a950rg:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·TOTOLINK

Remediation

No fixed version listed by the sources yet.

Timeline

2026-10-02 Threatist record created from CVE-2025-67188
2026-10-03 Alias added: GHSA-wv35-4hfx-h763

References

Exploit 1

https://github.com/SunnyYANGyaya/cuicuishark-sheep-fishIOT/blob/main/ToTolink/A950RG/5024-ipv6-setRadvdCfg-radvdinterfacename-buffer.md

TI-2025-41156 TOTOLINK A950RG V4.1.2cu.5204_B20210112 contains a buffer overflow vulnerability in the… CVSS 3.1CRITICAL 9.8
TI-2025-28852 A command execution vulnerability exists in the TOTOLINK A950RG V4.1.2cu.5204_B20210112. CVSS 3.1CRITICAL 9.8
TI-2025-20693 TOTOLINK A810R V4.1.2cu.5182_B20201026 and A950RG V4.1.2cu.5161_B20200903 were found to… CVSS 3.1CRITICAL 9.8
TI-2025-20692 TOTOLINK A950RG V4.1.2cu.5161_B20200903 was found to contain a pre-auth remote command… CVSS 3.1CRITICAL 9.8
TI-2025-20691 TOTOLINK A830R V4.1.2cu.5182_B20201102 was found to contain a pre-auth remote command… CVSS 3.1CRITICAL 9.8
TI-2025-20690 TOTOLINK A800R V4.1.2cu.5137_B20200730, A810R V4.1.2cu.5182_B20201026, A830R… CVSS 3.1CRITICAL 9.8

See all 32 →

Sources

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