CVE-2025-27021: g42 (CVSS 7)

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.

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CVSS v3.1 Score

7.0

HIGH

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

Weakness Type (CWE)

CWE-266 CWE-266

Affected Products

Vendor	Product	Versions
nokia	g42_firmware	6.1.3 — 7.1
nokia	g42	All

References

Other References

https://euvd.enisa.europa.eu/vulnerability/CVE-2025-27021 https://www.cvcn.gov.it/cvcn/cve/CVE-2025-27021

Frequently Asked Questions

What is CVE-2025-27021? +

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. It has a CVSS v3.1 base score of 7.0 (HIGH).

How severe is CVE-2025-27021? +

CVE-2025-27021 has a CVSS v3.1 score of 7.0 out of 10, rated HIGH. This is a high-severity vulnerability that should be prioritized for patching.

What products are affected by CVE-2025-27021? +

CVE-2025-27021 affects products from nokia, specifically: g42, g42_firmware. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2025-27021? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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