Jenkins Remote Code Execution Vulnerability

Exploited · KEV 2025-10-02Metasploit moduleCVE-2017-1000353

Exploited since 2025-10-02. No WAF vendor names it yet.

Edge rules

0/8

Our test

No exploit yet

CVSS

9.8

EPSS

99.7% Top 0.1%

Posts, 14d

Published

2018-01-29

Jenkins 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.

Edge coverage

Claimed by vendors

CloudflareBefore feed historyOlder than its feed AWSBefore feed historyOlder than its feed Microsoft AzureNo public claimNot named Google CloudBefore feed historyOlder than its feed FastlyBefore feed historyOlder than its feed F5Before feed historyOlder than its feed AkamaiNo public sourceNo public changelog OWASP CRSBefore feed historyOlder than its feed

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Severity, decoded

CVSS 3.1

9.8Critical

Critical · 9.8 / 10

Exploitable over the network, with no privileges and no user interaction, leading to full loss of confidentiality, integrity and availability.

Over the internetNo login neededNo user actionWorks reliablyFull compromise

How the score is built8 metrics

Attack vectorAn attacker can reach it over the internet; no access to your network needed.
Network
Attack complexityNo special conditions are needed; the attack works reliably.
Low
Privileges requiredNo account or login is needed.
None
User interactionNo one has to click or open anything; the attack works on its own.
None
ScopeThe damage stays within the vulnerable component.
Unchanged
Confidentiality impactAn attacker can read all data the affected component holds, or the most sensitive parts of it.
High
Integrity impactAn attacker can change any data or files the affected component protects.
High
Availability impactAn attacker can take the component down completely or keep it from serving anyone.
High

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CISA's assessmentSSVC, from the CVE record

ExploitationActive

Attackers are exploiting this in the wild.

AutomatableYes

Attackers can script the attack end to end and hit many targets at once.

Technical impactTotal

A successful attack gives full control over the affected software or all of its data.

Public exploits

2 found

1 Metasploit1 Exploit-DB0 Scanner template0 GitHub PoCs

MetasploitJenkins CLI Deserialization2017-04-26 · exploit · rank Excellent · has check
Exploit-DBCloudBees Jenkins 2.32.1 - Java Deserialization2017-05-05 · dos · java

Links are to third-party code: never run it outside an isolated lab.

Timeline

2017-04-26
Metasploit module published
Jenkins CLI Deserialization
2017-05-05
Exploit published on Exploit-DB
CloudBees Jenkins 2.32.1 - Java Deserialization
2018-01-29
CVE published
CVE List
2025-10-02
Added to CISA KEV
Confirmed exploitation in the wild