ClosedCriticalPatched

Jenkins: Remote Code Execution Vulnerability

Jenkins

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. Added to CISA KEV on 2025-10-02.

Why this severity: CVSS 9.8 (CISA ADP, v3.1); actively exploited (CISA KEV)

Started: Oct 2, 2025
Closed: Oct 2, 2025
CVE: CVE-2017-1000353

Updated Oct 2, 2025

Affected

See vendor advisory / CISA notes (versions not always listed in KEV feed)

Fixed in

See vendor advisory linked in sources

Timeline1

Oct 2, 2025
CISA added CVE-2017-1000353 to the KEV catalog (due 2025-10-23).

Advisories3

Notes & caveats

Derived from CISA KEV JSON feed catalogVersion 2026.10.21. CVSS from the CVE record (cvelistV5). Exact affected/fixed version strings are not always in the KEV record; verify against the vendor advisory URL. startedAt uses dateAdded (exploitation may have begun earlier; many entries are older CVEs newly confirmed as exploited in 2025).

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