High severity · published Jul 2, 2025
CVE-2025-27025
Improper File Access in Infinera G42
8.8
CVSS
0.6%
EPSS
No
On KEV
Description
The target device exposes a service on a specific TCP port with a configured endpoint. The access to that endpoint is granted using a Basic Authentication method. The endpoint accepts also the PUT method and it is possible to write files on the target device file system. Files are written as root. Using Postman it is possible to perform a Directory Traversal attack and write files into any location of the device file system. Similarly to the PUT method, it is possible to leverage the same mechanism to read any file from the file system by using the GET method.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.6% · higher than 50% 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
Affected product
G4
G42
Infinera
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CVE-2025-27024
Improper File Access in Infinera G42
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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