CVE-2017-1000353

Name: CVE-2017-1000353
Creator: NVD / NIST
Published: 2018-01-29T17:29:00.193+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

CRITICALCVSS 9.8/10Actively ExploitedEPSS 99.69%

Last modified Jun 17, 2026

CVE-2017-1000353 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. 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. CISA has confirmed active exploitation in the wild. EPSS estimates a 99.69% chance of exploitation in the next 30 days.

Description

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.

Metrics

CVSS 3.1

9.8/10

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

EPSS Probability

99.69%

99.9th percentile

Probability of exploitation in the next 30 days. Learn more

Exploitation Status

This vulnerability is listed in CISA’s Known Exploited Vulnerabilities catalog, confirming active exploitation in the wild. Federal agencies must remediate by Oct 23, 2025.

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Jenkins	Jenkins	<= 2.56
Jenkins	Jenkins	<= 2.46.1
Oracle	Communications Cloud Native Core Automated Test Suite	1.9.0

References

http://packetstormsecurity.com/files/159266/Jenkins-2.56-CLI-Deserialization-Code-Execution.htmlPermissions Required, Third Party Advisory, VDB Entry
http://www.securityfocus.com/bid/98056Broken Link
https://jenkins.io/security/advisory/2017-04-26/Vendor Advisory
https://www.exploit-db.com/exploits/41965/Exploit, Third Party Advisory, VDB Entry
https://www.oracle.com/security-alerts/cpuapr2022.htmlPatch, Third Party Advisory
http://packetstormsecurity.com/files/159266/Jenkins-2.56-CLI-Deserialization-Code-Execution.htmlPermissions Required, Third Party Advisory, VDB Entry
http://www.securityfocus.com/bid/98056Broken Link
https://jenkins.io/security/advisory/2017-04-26/Vendor Advisory
https://www.exploit-db.com/exploits/41965/Exploit, Third Party Advisory, VDB Entry
https://www.oracle.com/security-alerts/cpuapr2022.htmlPatch, Third Party Advisory
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2017-1000353US Government Resource

Timeline

Published: Jan 29, 2018
Last Modified: Jun 17, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2017-1000353?

How severe is CVE-2017-1000353?

CVE-2017-1000353 has a CVSS score of 9.8/10 (CRITICAL severity). The EPSS model estimates a 99.69% probability of exploitation in the next 30 days. This vulnerability is listed in CISA's Known Exploited Vulnerabilities catalog.

How do I fix CVE-2017-1000353?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2017-1000353?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST