What is the severity of CVE-2025-32755?

The severity of CVE-2025-32755 is considered critical due to the risk of SSH host key reuse, which can lead to potential man-in-the-middle attacks.

How do I fix CVE-2025-32755?

To fix CVE-2025-32755, ensure unique SSH host keys are generated for each container by modifying the image creation process.

What are the implications of CVE-2025-32755?

The implications of CVE-2025-32755 include the possibility of unauthorized access and data interception by attackers due to SSH key reuse.

Which versions of Jenkins are affected by CVE-2025-32755?

All Jenkins ssh-slave Docker images based on Debian that generate SSH host keys during image creation are affected by CVE-2025-32755.

Can CVE-2025-32755 be exploited remotely?

Yes, CVE-2025-32755 can be exploited remotely, allowing attackers in unauthorized networks to impersonate legitimate SSH servers.

Vulnerability/
CVE-2025-32755

critical

9.1

CWE

338

EPSS

0.031%

10/4/2025

11/4/2025

CVE-2025-32755: Weak RNG

First published: Thu Apr 10 2025(Updated: )

In jenkins/ssh-slave Docker images based on Debian, SSH host keys are generated on image creation for images based on Debian, causing all containers based on images of the same version use the same SSH host keys, allowing attackers able to insert themselves into the network path between the SSH client (typically the Jenkins controller) and SSH build agent to impersonate the latter.

Credit: jenkinsci-cert@googlegroups.com

Affected Software	Affected Version	How to fix
Jenkins SSH Slave

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Reference Links

https://www.jenkins.io/security/advisory/2025-04-10/#SECURITY-3565

Frequently Asked Questions

What is the severity of CVE-2025-32755?
The severity of CVE-2025-32755 is considered critical due to the risk of SSH host key reuse, which can lead to potential man-in-the-middle attacks.
How do I fix CVE-2025-32755?
To fix CVE-2025-32755, ensure unique SSH host keys are generated for each container by modifying the image creation process.
What are the implications of CVE-2025-32755?
The implications of CVE-2025-32755 include the possibility of unauthorized access and data interception by attackers due to SSH key reuse.
Which versions of Jenkins are affected by CVE-2025-32755?
All Jenkins ssh-slave Docker images based on Debian that generate SSH host keys during image creation are affected by CVE-2025-32755.
Can CVE-2025-32755 be exploited remotely?
Yes, CVE-2025-32755 can be exploited remotely, allowing attackers in unauthorized networks to impersonate legitimate SSH servers.

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