CVE-2025-27026Network attack vector

Management lockout via unconfirmed CLI deactivation

Published Jul 2, 2025 · Updated Jul 2, 2025

Access-control flaw in Infinera GX G42 6.1.3 and later before 8.0 allows remote authenticated users to interrupt management access. The WebGUI's CLI-deactivation control disables the CLI, Linux shell, WebGUI, and physical serial console together and performs no confirmation check. Administrator privileges and WebGUI access are required; triggering the control can remove every documented management path and cause complete loss of device control.

CVSS severity4.9
Medium
EPSS probability0.34%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Access-control flaw in Infinera GX G42 6.1.3 and later before 8.0 allows remote authenticated users to interrupt management access. The WebGUI's CLI-deactivation control disables the CLI, Linux shell, WebGUI, and physical serial console together and performs no confirmation check. Administrator privileges and WebGUI access are required; triggering the control can remove every documented management path and cause complete loss of device control.

The record

CVE
CVE-2025-27026
Published
Jul 2, 2025
Updated
Jul 2, 2025
Vendor
Infinera
Product
GX G42
Classifications
CWE-1220, T1499.004
Attack vector
network
Privileges
admin

Timeline

How it unfolded

  1. Jul 2, 2025CVE publishedPublication date reported by the CVE source.
  2. Jul 2, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=6.1.3 <8.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesadmin

What is affected?

Infinera · GX G42version=6.1.3 <8.0

Published CVSS scores

4.9ENISACVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesadmin
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-1220Insufficient Granularity of Access Control
T1499.004Endpoint Denial of Service: Application or System Exploitation

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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