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CVE-2025-27021

7.0 · HIGH

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.

Published Jul 2, 2025CWE-266EPSS 0.15%

Overview

CVE-2025-27021 is a high-severity vulnerability. It was published on July 2, 2025 and has a CVSS 3.1 base score of 7.0 (HIGH).

This vulnerability has a CVSS 3.1 base score of 7.0, rated HIGH. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

Technical 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.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

Refeuvd.enisa.europa.eu/vulnerability/CVE-2025-27021Refwww.cvcn.gov.it/cvcn/cve/CVE-2025-27021

How CyberStrike helps

Frequently asked questions

What is CVE-2025-27021?

CVE-2025-27021 is a high-severity vulnerability. It was published on July 2, 2025 and has a CVSS 3.1 base score of 7.0 (HIGH).

How severe is CVE-2025-27021?

This vulnerability has a CVSS 3.1 base score of 7.0, rated HIGH. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

How do I fix or remediate CVE-2025-27021?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2025-27021?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2025-27021 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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