What is the CVSS score of CVE-2025-22938?

CVE-2025-22938 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: 0.4%.

Which versions of 411 Firmware are affected by CVE-2025-22938?

Organizations using Adtran 411 ONT L80.00.0011.M2 face critical risk from CVE-2025-22938 rated CVSS 9.8.

Is there a public PoC exploit available for CVE-2025-22938?

Yes, a public proof-of-concept exploit is available for CVE-2025-22938. Prioritise patching immediately. EPSS: 0.4%.

How to fix or mitigate CVE-2025-22938?

Within 24 hours: Identify all affected systems and apply vendor patches immediately. Monitor vendor channels for patch availability.

411 Firmware CVE-2025-22938

CRITICAL

Use of Default Password (CWE-1393)

2025-03-31 cve@mitre.org

Information Disclosure 411 Firmware

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

Adtran 411 ONT L80.00.0011.M2 was discovered to contain weak default passwords.

AnalysisAI

Adtran 411 ONT L80.00.0011.M2 was discovered to contain weak default passwords. 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-1393. Adtran 411 ONT L80.00.0011.M2 was discovered to contain weak default passwords. Affected products include: Adtran 411 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.