CVE-2017-1000353
Jenkins — Jenkins Remote Code Execution Vulnerability
Jenkins · CWE-502 — Deserialization of untrusted data · in CISA KEV since 2025-10-02
EVRS 88 of 100 Immediate
Out-of-Band / Urgent Remediation
Rank 169 of 2,962 tracked
Why it scores 88
Evidence available: 6 of 7 signalsListed in the CISA KEV catalog, and an EPSS probability of 0.997.
- CISA KEVApplied
- RansomwareDid not apply
- Vendor exploitationDid not apply
- EPSSApplied
- Microsoft Exploitability IndexNot applicable
- Pre-patch disclosureNo data
- KEV recencyDid not apply
- CVSSApplied
The band answers “how soon”, not “how bad”. No data for: Pre-patch disclosure. Why some signals show no data
Fix
Patch or fixed version identifiedCISA required action
Fixed in
- org.jenkins-ci.main:jenkins-core
2.572.46.2update to this version or later in your release line
Affected versions
- org.jenkins-ci.main:jenkins-core (maven)
affected >= 2.50, <= 2.56, fixed in 2.57affected <= 2.46.1, fixed in 2.46.2
Remediation
Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
Fixed versions from NVD and GitHub. Affected packages also in GitHub Advisory GHSA-26wc-3wqp-g3rp (CC BY 4.0).
Evidence
Each value with its source| Measure | Value | Source |
|---|---|---|
| CVSS base scoreHow severe the flaw is in itself. It does not say how likely an attack is. | 9.8 | NVD |
| FIRST EPSSFIRST's estimate of the chance this is exploited in the next 30 days, and how that ranks against all CVEs. | 0.997 (99.95th pctl) | FIRST EPSS |
| Actively exploitedWhether a source of record has confirmed attacks using it in the wild. | Confirmed | CISA KEV |
| Ransomware campaign useWhether CISA has seen ransomware operators use it. | Unknown or none | CISA KEV |
| CISA remediation deadlineThe date US federal agencies must have fixed or mitigated it. | 2025-10-23 · KEV since 2025 · listed over a year | CISA KEV |
| Public exploit moduleA module existing is not the same as active exploitation. | Public module exists | Metasploit |
| EUVD cross-referenceENISA's record: CVSS 9.8 (v3.1), assigned by mitre. | Listed | ENISA EUVD |
Description
NVDJenkins versions 2.56 and earlier as well as 2.46.1 LTS and earlier are vulnerable to an unauthenticated remote code execution. An unauthenticated remote code execution vulnerability allowed attackers to transfer a serialized Java `SignedObject` object to the Jenkins CLI, that would be deserialized using a new `ObjectInputStream`, bypassing the existing blacklist-based protection mechanism. We're fixing this issue by adding `SignedObject` to the blacklist. We're also backporting the new HTTP CLI protocol from Jenkins 2.54 to LTS 2.46.2, and deprecating the remoting-based (i.e. Java serialization) CLI protocol, disabling it by default.
What CISA says to do
Public module
Metasploit lists a public excellent-rank module for this CVE: Jenkins CLI Deserialization (linux/http/jenkins_cli_deserialization). A module existing is not the same as active exploitation; see metasploit.com.