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N600r Firmware CVE-2025-22900

CRITICAL
Stack-based Buffer Overflow (CWE-121)
2025-04-15 cve@mitre.org
Buffer Overflow Stack Overflow N600r Firmware TOTOLINK
9.8
CVSS 3.1 · NVD
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Severity by source

NVD PRIMARY
9.8 CRITICAL
AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

Lifecycle Timeline

3
Analysis Generated
Mar 28, 2026 - 18:36 vuln.today
PoC Detected
Apr 22, 2025 - 16:55 vuln.today
Public exploit code
CVE Published
Apr 15, 2025 - 19:16 nvd
CRITICAL 9.8

DescriptionCVE.org

Totolink N600R v4.3.0cu.7647_B20210106 was discovered to contain a stack overflow via the macCloneMac parameter in the setWanConfig function.

AnalysisAI

Totolink N600R v4.3.0cu.7647_B20210106 was discovered to contain a stack overflow via the macCloneMac parameter in the setWanConfig function. Rated critical severity (CVSS 9.8), this vulnerability is remotely exploitable, no authentication required, low attack complexity. Public exploit code available and no vendor patch available.

Technical ContextAI

This vulnerability is classified under CWE-121. Totolink N600R v4.3.0cu.7647_B20210106 was discovered to contain a stack overflow via the macCloneMac parameter in the setWanConfig function. Affected products include: Totolink N600R Firmware.

RemediationAI

No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Apply vendor patches when available. Implement network segmentation and monitoring as interim mitigations.

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CVE-2025-22900 vulnerability details – vuln.today
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