What’s Vulnerable › Vulnerabilities

CVE-2025-27026: Improper Access Control Granularity impacting Infinera G42

• Severity: medium (CVSS 4.9 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.4% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2025-07-02 · updated 2026-06-17
• Weakness: CWE-1220

Description

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.

Affected products

• Infinera G42: from 6.1.3 before 8.0 — fixed in 8.0

How to fix

Upgrade to a fixed version: Infinera G42 8.0. Check the vendor advisory for mitigations.

References

• https://euvd.enisa.europa.eu/vulnerability/CVE-2025-27026
• https://www.cvcn.gov.it/cvcn/cve/CVE-2025-27026

Get alerted when CVE-2025-27026 or the next vulnerability affects your stack