Jenkins Remote Code Execution Vulnerability (CVE-2017-1000353)
Severity: critical · Patch status: patched · Since 2025-10-02 · CVE-2017-1000353
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. CISA added CVE-2017-1000353 to its Known Exploited Vulnerabilities catalog on Oct 2, 2025, which means attackers are exploiting it in the wild.
What to do
- Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
- US federal agencies must remediate by Oct 23, 2025 (BOD 22-01); treat that as the outer limit.
Sources
All live incidents on Threat Watch
