$ cve CVE-2017-1000353 JSON

CVE-2017-1000353 KEV EXPLOIT

9.8

CRITICAL · CVSS 3.1 · EPSS 99.7% (pctl 100)

Patch first

On CISA KEV — known exploited in the wild, due 2025-10-23.

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.

Scoring

CVSS	9.8 (CRITICAL, v3.1)
Vector	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS	99.68% — more likely to be exploited than 100% of all CVEs
Weakness	CWE-502
On CISA KEV	yes — remediate by 2025-10-23
Public exploit	yes
Published	2018-01-29
Last modified	2026-06-17

CISA KEV

Name	Jenkins Remote Code Execution Vulnerability
Added	2025-10-02
Due	2025-10-23
Vendor / product	Jenkins / Jenkins
Ransomware use	none reported

Affected (2)

Vendor	Product
jenkins	jenkins
oracle	communications cloud native core automated test suite

Public exploits

Source	Title	Date
exploit-db	CloudBees Jenkins 2.32.1 - Java Deserialization	2017-05-05

References

→ the Explorer · watch your stack · NVD