Risk Letters

Exploited vulnerability

CVE-2017-1000353

TLP:CLEAR

Jenkins Remote Code Execution Vulnerability

Jenkins contains a remote code execution vulnerability. This vulnerability that could allowed attackers to transfer a serialized Java SignedObject object to the remoting-based Jenkins CLI, that would be deserialized using a new ObjectInputStream, bypassing the existing blocklist-based protection mechanism.

Facts

  • Vendor: Jenkins
  • Product: Jenkins
  • CVSS: 9.8
  • EPSS (probability of exploitation within 30 days): 99.7 %
  • On CISA's Known Exploited Vulnerabilities list since: 2 October 2025
  • First known exploitation: 2 October 2025
  • CISA's deadline for US federal agencies: 23 October 2025
  • First seen by Risk Letters: 2 October 2025

Members see which Nordic sectors the flaw hits, and what to do about it.

Get the full brief

Data: NVD (public domain), CISA KEV, FIRST EPSS, MITRE ATT&CK, AlienVault OTX. NVD