ExploitedIn CISA KEVFix available

CVE-2017-1000353

Q: Is CVE-2017-1000353 actively exploited?

Yes. CVE-2017-1000353 is on the CISA Known Exploited Vulnerabilities (KEV) catalog, meaning it has been confirmed as actively exploited in the wild. CISA requires federal agencies to patch by 2025-10-23.

Q: What is the CVSS score for CVE-2017-1000353?

CVE-2017-1000353 has a CVSS v3 base score of 9.8 (CRITICAL severity), with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

Exploitation confirmed. First attested on 2025-10-02 by CISA-ADP, CISA KEV, GCVE · kevintel.

Published2018-01-29
WeaknessCWE-502

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

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.

Timeline

dates in UTC

2018-01-2917:29CVE publishedNVD
2025-10-02Listed as exploited by GCVEGCVE
2025-10-02Exploitation first reportedCISA KEV
2025-10-02Added to the CISA KEV catalogCISA KEV
2025-10-0203:55SSVC exploitation set to activeCISA-ADP
2026-10-2319:23First public proof of conceptPoC-in-GitHub
2026-10-2319:23EPSS crossed 10 %FIRST EPSS

Observed activity

isMalicious corpus · updated 2026-10-23 21:37 UTC

Indicators tagged with this CVE, per day0 indicators over 7 days

Block these indicators

Firewall list (EDL, text): https://api.ismalicious.com/edl/cve/CVE-2017-1000353?format=txt
CSV export: https://api.ismalicious.com/edl/cve/CVE-2017-1000353?format=csv
TAXII collection of exploited CVEs
The EDL and CSV take an API key on the Pro plan.

Versions per branch

NVD · OSV

Jenkins

Branch	Affected	Fixed in	Source
2.56	≤ 2.56	no fix published	NVD
2.46	≤ 2.46.1	no fix published	NVD

jenkins-core

Branch	Affected	Fixed in	Source
2.x	≥ 2.50, < 2.57	2.57	OSV
2.46	< 2.46.2	2.46.2	OSV

Oracle communications cloud native core automated test suite

Branch	Affected	Fixed in	Source
1.9	= 1.9.0	no fix published	NVD

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Fix

CISA’s required action: Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.due 2025-10-23

Advisories and patches

jenkins.ioVendor Advisory
www.oracle.comPatch

Detection

read 2026-10-23 19:23 UTC

Nuclei template: none so far
Exploit-DB: no entry
Proof-of-concept repositories: 2 repositories, unverifiedvulhub/CVE-2017-1000353r00t4dm/Jenkins-CVE-2017-1000353

CISA Known Exploited Vulnerability

Date Added: 2025-10-02
Patch Due Date: 2025-10-23
Ransomware Use: Unknown
Required Action: Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

Sources

CISA KEVKEV entry2025-10-02
GCVEexploitation2025-10-02
CISA-ADPSSVC decisionactive2025-10-02
OpenCVESSVC decisionactive—
CISA-ADPCVSS 3.19.82025-10-01
NVDCVSS 3.19.8read 2026-10-23
NVDCVSS 2.07.5read 2026-10-23
CISA-ADPweakness (CWE)CWE-5022025-10-01
NVDweakness (CWE)CWE-502read 2026-10-23
FIRST EPSSEPSS score99.7 %read 2026-10-23
PoC-in-GitHubproof of concept2read 2026-10-23
OSVaffected packages—

Technical details

CVSS v3 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Published: 2018-01-29
Last Modified: 2026-06-17
NVD status: Analyzed

Frequently asked questions

What is CVE-2017-1000353?

Is CVE-2017-1000353 actively exploited?

Yes. CVE-2017-1000353 is on the CISA Known Exploited Vulnerabilities (KEV) catalog, meaning it has been confirmed as actively exploited in the wild. CISA requires federal agencies to patch by 2025-10-23.

What is the CVSS score for CVE-2017-1000353?

CVE-2017-1000353 has a CVSS v3 base score of 9.8 (CRITICAL severity), with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

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