What is the CVSS score of CVE-2025-27026?

CVE-2025-27026 has a CVSS 3.1 base score of 4.9 (Medium). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H. EPSS exploitation probability: 0.1%.

Which versions of G42 Firmware are affected by CVE-2025-27026?

Organizations using the WebGUI for CLI deactivation in Infinera G42 should be aware of moderate risk from CVE-2025-27026 rated CVSS 4.9.. A patch is available.

How to fix or mitigate CVE-2025-27026?

Within 30 days: Identify affected systems running the WebGUI for CLI deactivation in Infinera G42 and apply vendor patches as part of regular patch cycle. Monitor vendor channels for patch availability.

G42 Firmware CVE-2025-27026

EUVD-2025-19724 MEDIUM

Insufficient Granularity of Access Control (CWE-1220)

2025-07-02 a6d3dc9e-0591-4a13-bce7-0f5b31ff6158

Information Disclosure G42 Firmware

4.9

CVSS 3.1 · NVD

Severity by source

NVD PRIMARY

4.9 MEDIUM

AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H

Attack Vector

Network

Attack Complexity

Low

Privileges Required

High

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

High

Lifecycle Timeline

Patch available

Apr 16, 2026 - 05:29 EUVD

8.0

EUVD ID Assigned

Mar 16, 2026 - 01:55 euvd

EUVD-2025-19724

Analysis Generated

Mar 16, 2026 - 01:55 vuln.today

CVE Published

Jul 02, 2025 - 14:15 nvd

MEDIUM 4.9

DescriptionCVE.org

A missing double-check feature in the WebGUI for CLI deactivation in Infinera G42 version R6.1.3 allows an authenticated administrator to make other management interfaces unavailable via local and network interfaces. The CLI deactivation via the WebGUI does not only stop CLI interface but deactivates also Linux Shell, WebGUI and Physical Serial Console access. No confirmation is asked at deactivation time. Loosing access to these services device administrators are at risk of completely loosing device control.

AnalysisAI

A security vulnerability in the WebGUI for CLI deactivation in Infinera G42 (CVSS 4.9) that allows an authenticated administrator. Remediation should follow standard vulnerability management procedures.