What is the CVSS score of CVE-2025-28039?

CVE-2025-28039 has a CVSS 3.1 base score of 9.8 (Critical). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H. EPSS exploitation probability: 7.5%.

Which versions of Ex1200t Firmware are affected by CVE-2025-28039?

Organizations using a pre-auth remote command execution vulnerability in the setUpgradeFW function face critical risk from CVE-2025-28039, a OS command injection vulnerability rated CVSS 9.8.

Is there a public PoC exploit available for CVE-2025-28039?

Yes, a public proof-of-concept exploit is available for CVE-2025-28039. Prioritise patching immediately. EPSS: 7.5%.

How to fix or mitigate CVE-2025-28039?

Within 24 hours: Identify all affected systems running a pre-auth remote command execution vulnerability in the set and apply vendor patches immediately. Validate that input sanitization is in place for all user-controlled parameters.

Ex1200t Firmware CVE-2025-28039

CRITICAL

OS Command Injection (CWE-78)

2025-04-22 cve@mitre.org

Command Injection Ex1200t Firmware TOTOLINK

9.8

CVSS 3.1

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

Analysis Generated

Mar 28, 2026 - 18:38 vuln.today

PoC Detected

Apr 29, 2025 - 16:01 vuln.today

Public exploit code

CVE Published

Apr 22, 2025 - 18:15 nvd

CRITICAL 9.8

DescriptionNVD

TOTOLINK EX1200T V4.1.2cu.5232_B20210713 was found to contain a pre-auth remote command execution vulnerability in the setUpgradeFW function through the FileName parameter.

AnalysisAI

TOTOLINK EX1200T V4.1.2cu.5232_B20210713 was found to contain a pre-auth remote command execution vulnerability in the setUpgradeFW function through the FileName 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 ContextAI

This vulnerability is classified as OS Command Injection (CWE-78), which allows attackers to execute arbitrary operating system commands on the host. TOTOLINK EX1200T V4.1.2cu.5232_B20210713 was found to contain a pre-auth remote command execution vulnerability in the setUpgradeFW function through the FileName parameter. Affected products include: Totolink Ex1200T Firmware.

RemediationAI

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.

CVE-2025-28039 vulnerability details – vuln.today

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Ex1200t Firmware CVE-2025-28039

CVSS VectorNVD

Lifecycle Timeline

DescriptionNVD

AnalysisAI

Technical ContextAI

RemediationAI

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External POC / Exploit Code