Cyber Resilience

CVE-2025-64135

Jenkins Eggplant Runner ≤ 0.0.1.301.v963cffe8ddb_8

Published
29 October 2025
Modified
22 December 2025
Patch / advisory
View advisory
CVSS Score v3.1 5.9
Click a component to see what it means
Raw vectorCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
EPSS Score 0.0030 22th percentile
Risk Priority 35 floored blend · peak EPSS

Summary

CVE-2025-64135 is a medium-severity Initialization of a Resource with an Insecure Default (CWE-1188) vulnerability in Jenkins Eggplant Runner. Its CVSS base score is 5.9 (Medium).

Operationally, exploitation aligns with the MITRE ATT&CK technique Exploitation for Stealth (T1211); ranked at the 22th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog.

The strongest mitigations our analysis identified map to CM-6 (Configuration Settings) and SI-2 (Flaw Remediation) — see the control section below for these in your framework.

EU & UK References

Vulnerability Data

Jenkins Eggplant Runner Plugin 0.0.1.301.v963cffe8ddb_8 and earlier sets the Java system property `jdk.http.auth.tunneling.disabledSchemes` to an empty value, disabling a protection mechanism of the Java runtime.

CWE(s)
CWE-1188

Related Threats

MITRE ATT&CK Enterprise TechniquesAI

T1211 Exploitation for Stealth Stealth
Adversaries may exploit vulnerabilities to evade detection by hiding activity, suppressing logging, or operating within trusted or unmonitored components.
attack.mitre.org →
T1557.001 Name Resolution Poisoning and SMB Relay Credential Access
By responding to LLMNR/NBT-NS/mDNS network traffic, adversaries may spoof an authoritative source for name resolution to force communication with an adversary controlled system.
attack.mitre.org →
T1685 Disable or Modify Tools Defense Impairment
Adversaries may disable, degrade, or tamper with security tools or applications (e.
attack.mitre.org →
T1689 Downgrade Attack Defense Impairment
Adversaries may downgrade or use a version of system features that may be outdated, vulnerable, and/or does not support updated security controls.
attack.mitre.org →
Why these techniques?

The vulnerability causes the plugin to disable a Java runtime protection (jdk.http.auth.tunneling.disabledSchemes) against HTTP proxy authentication tunneling (mitigating CVE-2016-5597), enabling exploitation for defense evasion, downgrading security controls, and facilitating adversary-in-the-middle/NTLM relay attacks via proxy interception of authentication traffic.

CVEs Like This One

CVE-2024-23900Same vendor: Jenkins
CVE-2025-53671Same vendor: Jenkins
CVE-2023-33007Same vendor: Jenkins
CVE-2023-28677Same vendor: Jenkins
CVE-2023-30529Same vendor: Jenkins
CVE-2023-40350Same vendor: Jenkins
CVE-2023-24441Same vendor: Jenkins
CVE-2023-28685Same vendor: Jenkins
CVE-2023-3414Same vendor: Jenkins
CVE-2023-28684Same vendor: Jenkins

Affected Assets

jenkins
eggplant runner
≤ 0.0.1.301.v963cffe8ddb_8

Mitigating Controls

Control response

Prevent
Stop it (NIST 800-53)
  • CM-6 Configuration Settings
  • SI-2 Flaw Remediation
  • CM-7 Least Functionality
Detect
Catch it (NIST detect / respond)

—

Harden
Shrink the surface (DISA STIG)
  • 13 hardening rules · 7 OS baselines
Validate
Prove the fix (OWASP ASVS)
  • V14.3.2
  • V6.3.2
  • V11.3.1
  • V13.2.3

Mitigating Controls (NIST 800-53 r5) AI

CM-6 Configuration Settings good match
prevent

Directly enforces secure values for Java system properties and plugin configuration settings that the vulnerable Eggplant Runner plugin overrides.

SI-2 Flaw Remediation good match
prevent

Requires prompt application of updated plugin versions that restore the jdk.http.auth.tunneling.disabledSchemes protection.

CM-7 Least Functionality partial match
prevent

Restricts enabling of insecure or non-essential configuration options that weaken Java runtime protections.

Mitigating Controls (NIST CSF 2.0) AI

Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→CSF cross-walk (authority under review) — links open the control.

PR.PS-01 full match
prevents

Hardened baselines and configuration management directly replace insecure defaults with secure settings.

PR.PS-06 mostly match
prevents

Secure development practices include designing products with secure defaults rather than insecure ones.

ID.RA-09 partial match
prevents

Pre-acquisition integrity checks can reject products known to ship with insecure defaults.

Mitigating Controls (ISO/IEC 27001:2022 Annex A) AI

Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→ISO cross-walk (authority under review) — links open the control.

A.8.9 Configuration management mostly match
prevents

Mandating secure baseline templates and immediate replacement of vendor defaults directly stops systems from being deployed with insecure factory settings that attackers can exploit.

A.8.32 Change management partial match
prevents

Requiring documented specification, testing, and acceptance of changes ensures that new or modified components are not initialized with insecure default settings that would otherwise be left in production.

A.5.21 Managing information security in the ICT supply chain none match
none

Requiring suppliers to document secure configuration and implemented security functions reduces the likelihood that products will be initialised with insecure default settings.

Hardening callouts derived

Configuration rules from DISA STIG baselines that reduce the attack surface for weaknesses of the type cited by this CVE. Derived transitively via CVE→CWE→STIG over `controls_xwalks` (authoritative rows only).

Oracle Linux 8 (1 rule)
  • V-248823 OL 8 must not have the telnet-server package installed. via CWE-1188
RHEL 7 (1 rule)
  • V-204627 SNMP community strings on the Red Hat Enterprise Linux operating system must be changed from the default. via CWE-1188
Ubuntu 22.04 (1 rule)
  • V-260529 Ubuntu 22.04 LTS must be configured so that remote X connections are disabled, unless to fulfill documented and validated mission requirements. via CWE-1188
Ubuntu 24.04 (1 rule)
  • V-270708 Ubuntu 24.04 LTS must be configured so that remote X connections are disabled, unless to fulfill documented and validated mission requirements. via CWE-1188
Windows Server 2019 (1 rule)
  • V-205741 Windows Server 2019 Active Directory Group Policy objects must have proper access control permissions. via CWE-1188
Windows Server 2022 (1 rule)
  • V-254393 Windows Server 2022 Active Directory Group Policy objects must have proper access control permissions. via CWE-1188

References