CVE intelligence and bounded remediation

CVE-2025-27022 — Nokia G42 Firmware security vulnerability

High CVSS 7.5

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.

Severity
High
CVSS
7.5 (3.1)
Published
2025-07-02
CISA KEV
Not currently listed
Ecosystem
operating-system
Weaknesses
CWE-22

Affected products

  • nokia / g42_firmware

Matched remediation archetype

Path traversal, unsafe upload, and file handling

This catalog composition supplies bounded fallback guidance. Explicitly reviewed curated workflows load with the complete record below.

Check exposure

  • Trace untrusted filenames, archive entries, URLs, and path segments into read, write, include, extraction, and upload operations.
  • Identify filesystem roots, mount permissions, symbolic-link behavior, archive handling, and whether uploaded content is web-accessible or executable.
  • Review canonicalization and containment checks across supported operating systems and storage backends.

Remediate safely

  • Generate server-side storage identifiers and resolve paths beneath a fixed root using filesystem-aware containment checks.
  • Reject absolute, parent-relative, alternate-separator, device, link, and archive entries that escape the intended root.
  • Store uploads outside executable or served paths, validate type and size, and use private atomic temporary files.

Authoritative sources

Complete CVE record and remediation plan

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