dbcve.org
G42 FirmwareOperating system · Nokia

CVE-2025-27022

MEDIUM · 6.5 CVSS v3.1 Developing Published 2025-07-02
Fix available
A fix is available. Upgrade to 7.1 or later.
See remediation →
71/100
Remediation priority · Elevated
Remotely reachable Zero-click

Official description Straight from the sourceThe vendor's or NVD's own wording, published unedited. Authoritative, but often terse — it says what broke, rarely what to do.

NVD · unedited
A path traversal vulnerability of the WebGUI HTTP endpoint in Infinera G42 version R6.1.3 allows remote authenticated users to download all OS files via HTTP requests. Details: Lack or insufficient validation of user-supplied input allows authenticated users to access all files on the target machine file system that are readable to the user account used to run the httpd service.

Technical summary Written by usOur analysis, written from the advisory, the CVSS vector and the affected-version data. It adds context the advisory leaves out, and never invents facts that are not in the source.

dbcve analysis · low confidence
Developing — this CVE was published recently and its authoritative NVD entry is still being established, so we're holding a technical summary until the source data settles rather than publish something unreliable. Re-checking after 2026-07-30.

Affected products & versions What the vendor confirmedThe version ranges the vendor confirmed as vulnerable. If your version sits inside a range here, treat yourself as exposed until you have upgraded.

NVD · CPE data
G42 FirmwareOperating system
Affected:>= 6.1.3, < 7.1

CVSS breakdown How the score is builtThe industry scoring standard. It rates how the flaw is reached, what it takes to exploit, and what an attacker gains — the score is derived from those, not the other way round.

From the vector
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
None
Availability
None

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

Remediation Closing itWhat it takes to close this. Where a vendor fix exists we point at it; where none exists we say so plainly, and can build one. Effort estimates are scoped from the advisory, not from your codebase.

dbcve · scoped
Upgrade available Upgrade to 7.1 or later
Fixed in 7.1
Recommended fix Moderate confidence

G42 firmware version 7.1 or later

  1. Verify current firmware version by accessing the device WebGUI or using CLI command 'show version'
  2. Download the G42 firmware version 7.1 or later from Infinera's official support portal
  3. Review Infinera upgrade documentation for prerequisite checks (power, redundancy, backup configuration)
  4. Upload the firmware image through the WebGUI interface (typically under Administration > Firmware Upgrade) or via CLI
  5. Initiate the firmware upgrade process and monitor for completion
  6. After upgrade, verify the new version is installed using 'show version'
  7. Test that the WebGUI path traversal vulnerability is remediated by attempting controlled file access (should be blocked)
  8. Ensure all management access uses secure authentication credentials
Caveat Firmware upgrades may temporarily interrupt service; ensure proper maintenance window and backup before proceeding

Generated from the published advisory — verify against the referenced sources before acting.

We can perform the upgrade in your staging environment and verify nothing breaks — typical engagement from $1,600. Get the upgrade done

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References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.

Primary sources

Practitioner notes

Contributed

Peer-ranked notes from engineers who’ve handled CVE-2025-27022 in production — separate from our analysis above.

No notes yet

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What this is

A place for practitioners to share what actually worked: a mitigation you’ve tested, a configuration change, a version- or environment-specific caveat, or a link to a verified patch. The most useful notes rise to the top as peers upvote them, so the signal stays high.

What belongs here
  • Verified mitigations, workarounds, and config changes
  • Version or environment caveats, and links to real fixes
  • No weaponised exploit code, or anything meant to cause harm
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