What is the CVSS score of CVE-2025-67189?

CVE-2025-67189 has a CVSS 3.1 base score of 6.5 (Medium). CVSS vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H. EPSS exploitation probability: 0.1%.

Which versions of A950rg Firmware are affected by CVE-2025-67189?

Organizations using the setParentalRules interface of TOTOLINK A950RG should be aware of notable risk from CVE-2025-67189, a buffer overflow vulnerability rated CVSS 6.5.

Is there a public PoC exploit available for CVE-2025-67189?

Yes, a public proof-of-concept exploit is available for CVE-2025-67189. Prioritise patching immediately. EPSS: 0.1%.

How to fix or mitigate CVE-2025-67189?

Within 30 days: Identify affected systems running the setParentalRules interface of TOTOLINK A950RG and apply vendor patches as part of regular patch cycle. Monitor vendor channels for patch availability.

A950rg Firmware CVE-2025-67189

MEDIUM

Classic Buffer Overflow (CWE-120)

2026-02-03 cve@mitre.org

Buffer Overflow Denial Of Service A950rg Firmware RCE TOTOLINK

6.5

CVSS 3.1 · NVD

Severity by source

NVD PRIMARY

6.5 MEDIUM

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

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Attack Vector

Adjacent

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

High

Lifecycle Timeline

Analysis Generated

Mar 12, 2026 - 21:54 vuln.today

PoC Detected

Feb 10, 2026 - 14:15 vuln.today

Public exploit code

CVE Published

Feb 03, 2026 - 18:16 nvd

MEDIUM 6.5

DescriptionCVE.org

A buffer overflow vulnerability exists in the setParentalRules interface of TOTOLINK A950RG V4.1.2cu.5204_B20210112. The urlKeyword parameter is not properly validated, and the function concatenates multiple user-controlled fields into a fixed-size stack buffer without performing boundary checks. A remote attacker can exploit this flaw to cause denial of service or potentially achieve arbitrary code execution.

AnalysisAI

A950Rg Firmware versions up to 4.1.2cu.5204_b20210112 is affected by classic buffer overflow (CVSS 6.5).

Technical ContextAI

This vulnerability (CWE-120: Classic Buffer Overflow) exists in the setParentalRules component. A buffer overflow vulnerability exists in the setParentalRules interface of TOTOLINK A950RG V4.1.2cu.5204_B20210112. The urlKeyword parameter is not properly validated, and the function concatenates multiple user-controlled fields into a fixed-size stack buffer without performing boundary checks. A remote attacker can exploit this flaw to cause denial of service or potentially achieve arbitrary code execution.