CVE-2025-27021
7.0 · HIGHOverview
CVE-2025-27021 is a high-severity vulnerability affecting nokia g42_firmware. 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 and patches from nokia. Update g42_firmware to the latest patched version. 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.
Affected Products
| Vendor | Product | Versions | Status |
|---|---|---|---|
| nokia | g42_firmware | >= 6.1.3, < 7.1 | Affected |
Frequently Asked Questions
What is CVE-2025-27021?
CVE-2025-27021 is a high-severity vulnerability affecting nokia g42_firmware. 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 and patches from nokia. Update g42_firmware to the latest patched version. 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's AI-powered security agents can automatically detect CVE-2025-27021 across your infrastructure using autonomous pentesting, DAST scanning, and HackBrowser. The platform continuously monitors for known vulnerabilities and provides actionable remediation guidance prioritized by real-world exploitability.
How CyberStrike Helps
AI agents map your attack surface to find vulnerabilities like this one.
Automated penetration testing that runs continuously, not just quarterly.
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Browser-based exploitation validates findings with real proof-of-concept.
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