High severity · published Jul 2, 2025
CVE-2025-27021
Operating System Misconfiguration in Infinera G42
7.8
CVSS
0.2%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack vector
Local
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.2% · higher than 5% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
G4
G42 · Infinera
6.1.3 before 7.1 · source: vendor
GF
G42 Firmware · Nokia
6.1.3 before 7.1 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2025-27021
CVE.org
https://www.cve.org/CVERecord?id=CVE-2025-27021
Third Party Advisory
https://euvd.enisa.europa.eu/vulnerability/CVE-2025-27021
Third Party Advisory
https://www.cvcn.gov.it/cvcn/cve/CVE-2025-27021
More from G42
8.8
CVE-2025-27025
Improper File Access in Infinera G42
6.5
CVE-2025-27024
Improper File Access in Infinera G42
6.5
CVE-2025-27023
Improper Input Validation in Infinera G42
6.5
CVE-2025-27022
Path Traversal Vulnerability in Infinera G42
4.9
CVE-2025-27026
Improper Access Control Granularity impacting Infinera G42
