CVE-2025-32754Network attack vector

Agent impersonation via image-baked SSH host keys

Published Apr 10, 2025 · Updated Apr 10, 2025

Host key reuse in Jenkins SSH Agent Docker Image 6.11.1 and earlier allows man-in-the-middle attackers to impersonate build agents. Debian image builds generate and retain SSH host keys in the image layers, causing containers created from the same image version to present identical keys. Exploitation requires control of the network path between the Jenkins controller and agent, enabling an attacker-controlled endpoint to be accepted as the agent.

CVSS severity9.1
Critical
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

Host key reuse in Jenkins SSH Agent Docker Image 6.11.1 and earlier allows man-in-the-middle attackers to impersonate build agents. Debian image builds generate and retain SSH host keys in the image layers, causing containers created from the same image version to present identical keys. Exploitation requires control of the network path between the Jenkins controller and agent, enabling an attacker-controlled endpoint to be accepted as the agent.

The record

CVE
CVE-2025-32754
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

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <=6.11.1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Jenkins Project · Jenkins SSH Agent Docker Imageversion=0 <=6.11.1

Published CVSS scores

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

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.

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Technologies

Your stack

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Your stack

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