How severe is CVE-2017-1000353?

CVE-2017-1000353 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2017-1000353 being actively exploited?

Yes. CVE-2017-1000353 is on CISA's Known Exploited Vulnerabilities (KEV) catalog, added on 2025-10-02, which means active exploitation has been confirmed. It should be prioritised for remediation.

What products are affected by CVE-2017-1000353?

CVE-2017-1000353 primarily affects Jenkins. In total, 3 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2017-1000353?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Because this CVE is known to be actively exploited, treat remediation as urgent — CISA KEV typically sets a short remediation deadline.

Does CVE-2017-1000353 have an EU (EUVD) identifier?

Yes. CVE-2017-1000353 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2022-1921. It is also flagged as exploited in the EUVD (since 2025-10-02).

When was CVE-2017-1000353 published?

CVE-2017-1000353 was published on 2018-01-29 and last updated on 2026-06-17.

CVE-2017-1000353

CVE-2017-1000353 is a critical-severity vulnerability in Jenkins with a CVSS 3.x base score of 9.8. It is listed in CISA's Known Exploited Vulnerabilities (KEV) catalog, confirming it has been exploited in the wild (added 2025-10-02). The underlying weakness is classified as CWE-502.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
CVSS v2: 7.5
EPSS exploit prediction: 100% (100th percentile)
Actively exploited: Yes — listed in CISA KEV (added 2025-10-02)
EU (EUVD) id: EUVD-2022-1921
EU exploitation: Flagged exploited in the ENISA EU Vulnerability Database (since 2025-10-02)
Weakness: CWE-502
Affected product: Jenkins
Published: 2018-01-29
Last modified: 2026-06-17

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.

Frequently asked questions

What is CVE-2017-1000353?: 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.
How severe is CVE-2017-1000353?: CVE-2017-1000353 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2017-1000353 being actively exploited?: Yes. CVE-2017-1000353 is on CISA's Known Exploited Vulnerabilities (KEV) catalog, added on 2025-10-02, which means active exploitation has been confirmed. It should be prioritised for remediation.
What products are affected by CVE-2017-1000353?: CVE-2017-1000353 primarily affects Jenkins. In total, 3 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2017-1000353?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Because this CVE is known to be actively exploited, treat remediation as urgent — CISA KEV typically sets a short remediation deadline.
Does CVE-2017-1000353 have an EU (EUVD) identifier?: Yes. CVE-2017-1000353 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2022-1921. It is also flagged as exploited in the EUVD (since 2025-10-02).
When was CVE-2017-1000353 published?: CVE-2017-1000353 was published on 2018-01-29 and last updated on 2026-06-17.

References

Affected products (3)

cpe:2.3:a:jenkins:jenkins:*:*:*:*:-:*:*:*
cpe:2.3:a:jenkins:jenkins:*:*:*:*:lts:*:*:*
cpe:2.3:a:oracle:communications_cloud_native_core_automated_test_suite:1.9.0:*:*:*:*:*:*:*

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