CVE-2025-55613

CRITICAL
2025-08-22 [email protected]
9.8
CVSS 3.1
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CVSS Vector

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 - 19:08 vuln.today
PoC Detected
Sep 03, 2025 - 14:47 vuln.today
Public exploit code
CVE Published
Aug 22, 2025 - 18:15 nvd
CRITICAL 9.8

Tags

Buffer Overflow Tenda O3 Firmware

Description

Tenda O3V2 1.0.0.12(3880) is vulnerable to Buffer Overflow in the fromSafeSetMacFilter function via the mac parameter.

Analysis

Tenda O3V2 1.0.0.12(3880) is vulnerable to Buffer Overflow in the fromSafeSetMacFilter function via the mac parameter. 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 Context

This vulnerability is classified as Buffer Copy without Size Check (CWE-120), which allows attackers to overflow a buffer to corrupt adjacent memory. Tenda O3V2 1.0.0.12(3880) is vulnerable to Buffer Overflow in the fromSafeSetMacFilter function via the mac parameter. Affected products include: Tenda O3 Firmware.

Affected Products

Tenda O3 Firmware.

Remediation

No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Always validate buffer sizes before copy operations. Use bounded functions (strncpy, snprintf). Enable compiler protections.

Priority Score

69
Low Medium High Critical
KEV: 0
EPSS: +0.1
CVSS: +49
POC: +20

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CVE-2025-55613 vulnerability details – vuln.today
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