CVE-2025-28256

CRITICAL
2025-03-28 [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 - 18:33 vuln.today
PoC Detected
Apr 14, 2025 - 17:06 vuln.today
Public exploit code
CVE Published
Mar 28, 2025 - 21:15 nvd
CRITICAL 9.8

Tags

Command Injection RCE A3100R Firmware TOTOLINK

Description

An issue in TOTOLINK A3100R V4.1.2cu.5247_B20211129 allows a remote attacker to execute arbitrary code via the setWebWlanIdx of the file /lib/cste_modules/wireless.so.

Analysis

An issue in TOTOLINK A3100R V4.1.2cu.5247_B20211129 allows a remote attacker to execute arbitrary code via the setWebWlanIdx of the file /lib/cste_modules/wireless.so. 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 OS Command Injection (CWE-78), which allows attackers to execute arbitrary operating system commands on the host. An issue in TOTOLINK A3100R V4.1.2cu.5247_B20211129 allows a remote attacker to execute arbitrary code via the setWebWlanIdx of the file /lib/cste_modules/wireless.so. Affected products include: Totolink A3100R Firmware.

Affected Products

Totolink A3100R Firmware.

Remediation

No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Avoid passing user input to shell commands. Use language-specific APIs instead of shell execution. Apply strict input validation with allowlists.

Priority Score

73
Low Medium High Critical
KEV: 0
EPSS: +4.2
CVSS: +49
POC: +20

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CVE-2025-28256 vulnerability details – vuln.today
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