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7.8
HIGH CVSS 3.1
CVE-2025-27021
Operating System Misconfiguration in Infinera G42
Description

The misconfiguration in the sudoers configuration of the operating system in Infinera G42 version R6.1.3 allows low privileged OS users to read/write physical memory via devmem command line tool. This could allow sensitive information disclosure, denial of service, and privilege escalation by tampering with kernel memory. Details: The output of "sudo -l" reports the presence of "devmem" command executable as super user without using a password. This command allows to read and write an arbitrary memory area of the target device, specifying an absolute address.

INFO

Published Date :

July 2, 2025, 9:15 a.m.

Last Modified :

Feb. 11, 2026, 9:37 p.m.

Remotely Exploit :

No

Source :

a6d3dc9e-0591-4a13-bce7-0f5b31ff6158
Affected Products

The following products are affected by CVE-2025-27021 vulnerability. Even if cvefeed.io is aware of the exact versions of the products that are affected, the information is not represented in the table below.

ID Vendor Product Action
1 Nokia g42_firmware
2 Nokia g42
: Total Affected Vendor : 1 | Products : 2
CVSS Scores
The Common Vulnerability Scoring System is a standardized framework for assessing the severity of vulnerabilities in software and systems. We collect and displays CVSS scores from various sources for each CVE.
Score Version Severity Vector Exploitability Score Impact Score Source
CVSS 3.1 HIGH a6d3dc9e-0591-4a13-bce7-0f5b31ff6158
CVSS 3.1 HIGH [email protected]
Solution
Restrict devmem access in sudoers configuration to prevent unauthorized memory operations.
  • Review and restrict 'devmem' command usage in sudoers.
  • Implement least privilege for OS users.
  • Update the operating system to a secure version.
References to Advisories, Solutions, and Tools

Here, you will find a curated list of external links that provide in-depth information, practical solutions, and valuable tools related to CVE-2025-27021.

URL Resource
https://euvd.enisa.europa.eu/vulnerability/CVE-2025-27021 Third Party Advisory
https://www.cvcn.gov.it/cvcn/cve/CVE-2025-27021 Third Party Advisory
CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2025-27021 is associated with the following CWEs:

Common Attack Pattern Enumeration and Classification (CAPEC)

Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2025-27021 weaknesses.

We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).

Results are limited to the first 15 repositories due to potential performance issues.

The following list is the news that have been mention CVE-2025-27021 vulnerability anywhere in the article.

Results are limited to the first 20 news articles due to potential performance issues.

The following table lists the changes that have been made to the CVE-2025-27021 vulnerability over time.

Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.

  • Initial Analysis by [email protected]

    Feb. 11, 2026

    Action Type Old Value New Value
    Added CVSS V3.1 AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
    Added CPE Configuration AND OR *cpe:2.3:o:nokia:g42_firmware:*:*:*:*:*:*:*:* versions from (including) 6.1.3 up to (excluding) 7.1 OR cpe:2.3:h:nokia:g42:-:*:*:*:*:*:*:*
    Added Reference Type ENISA: https://euvd.enisa.europa.eu/vulnerability/CVE-2025-27021 Types: Third Party Advisory
    Added Reference Type ENISA: https://www.cvcn.gov.it/cvcn/cve/CVE-2025-27021 Types: Third Party Advisory
  • CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0

    Jul. 02, 2025

    Action Type Old Value New Value
    Added CWE CWE-266
  • New CVE Received by a6d3dc9e-0591-4a13-bce7-0f5b31ff6158

    Jul. 02, 2025

    Action Type Old Value New Value
    Added Description The misconfiguration in the sudoers configuration of the operating system in Infinera G42 version R6.1.3 allows low privileged OS users to read/write physical memory via devmem command line tool. This could allow sensitive information disclosure, denial of service, and privilege escalation by tampering with kernel memory. Details: The output of "sudo -l" reports the presence of "devmem" command executable as super user without using a password. This command allows to read and write an arbitrary memory area of the target device, specifying an absolute address.
    Added CVSS V3.1 AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
    Added Reference https://euvd.enisa.europa.eu/vulnerability/CVE-2025-27021
    Added Reference https://www.cvcn.gov.it/cvcn/cve/CVE-2025-27021
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.
Vulnerability Scoring Details
Base CVSS Score: 7.8
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality Impact
Integrity Impact
Availability Impact