What is the CVSS score of CVE-2025-22939?

CVE-2025-22939 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: 18.2%.

Which versions of 411 Firmware are affected by CVE-2025-22939?

CVE-2025-22939 presents critical security risk, a command injection vulnerability rated CVSS 9.8.

Is there a public PoC exploit available for CVE-2025-22939?

Yes, a public proof-of-concept exploit is available for CVE-2025-22939. Prioritise patching immediately. EPSS: 18.2%.

How to fix or mitigate CVE-2025-22939?

Within 24 hours: Identify all affected systems and apply vendor patches immediately. Validate that input sanitization is in place for all user-controlled parameters.

411 Firmware CVE-2025-22939

CRITICAL

Command Injection (CWE-77)

2025-03-31 cve@mitre.org

Command Injection 411 Firmware Adtran

9.8

CVSS 3.1 · NVD

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

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 - 18:34 vuln.today

PoC Detected

Aug 18, 2025 - 17:15 vuln.today

Public exploit code

CVE Published

Mar 31, 2025 - 15:15 nvd

CRITICAL 9.8

DescriptionCVE.org

A command injection vulnerability in the telnet service of Adtran 411 ONT L80.00.0011.M2 allows attackers to escalate privileges to root and execute arbitrary commands.

AnalysisAI

A command injection vulnerability in the telnet service of Adtran 411 ONT L80.00.0011.M2 allows attackers to escalate privileges to root and execute arbitrary commands. Rated critical severity (CVSS 9.8), this vulnerability is remotely exploitable, no authentication required, low attack complexity. Public exploit code available and EPSS exploitation probability 18.2%.

Technical ContextAI

This vulnerability is classified as Command Injection (CWE-77), which allows attackers to inject arbitrary commands into system command execution. A command injection vulnerability in the telnet service of Adtran 411 ONT L80.00.0011.M2 allows attackers to escalate privileges to root and execute arbitrary commands. Affected products include: Adtran 411 Firmware.

RemediationAI

No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Use parameterized APIs, avoid shell execution, validate input with strict allowlists.