CVE-2025-32755Network attack vector

Agent impersonation via reused SSH host keys

Published Apr 10, 2025 · Updated Apr 10, 2025

Cryptographic key reuse in Jenkins ssh-slave Debian images allows man-in-the-middle attackers to impersonate SSH build agents. The image build generates SSH host keys before publication, so containers created from the same image version inherit identical server keys. Exploitation requires control of the network path between the Jenkins controller and agent; it enables agent impersonation and interception of the SSH trust relationship.

CVSS severity5.6
Medium
EPSS probability0.47%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Cryptographic key reuse in Jenkins ssh-slave Debian images allows man-in-the-middle attackers to impersonate SSH build agents. The image build generates SSH host keys before publication, so containers created from the same image version inherit identical server keys. Exploitation requires control of the network path between the Jenkins controller and agent; it enables agent impersonation and interception of the SSH trust relationship.

The record

CVE
CVE-2025-32755
Published
Apr 10, 2025
Updated
Apr 10, 2025
Vendor
Jenkins Project
Product
Jenkins SSH Agent Docker Image
Classifications
CWE-338, T1557
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Apr 10, 2025CVE publishedPublication date reported by the CVE source.
  2. Apr 10, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Affected versions are unavailable in this record. Check the vendor advisory for version and patch details.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Jenkins Project · Jenkins SSH Agent Docker ImageAffected versions are unavailable in this record.

Published CVSS scores

9.1CISA-ADPCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
5.6Jenkins ProjectCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-338Use of Cryptographically Weak Pseudo-Random Number Generator (PRNG)
T1557Adversary-in-the-Middle

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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