Oracle Java SE and JRockit

CVE-2016-3427: Oracle Java SE and JRockit Unspecified Vulnerability

Is it exploited?

Yes. CISA added it to the Known Exploited Vulnerabilities catalog on 12 May 2023, 2,577 days after the CVE record was published.

How likely is exploitation in the next 30 days?

92.3%

EPSS score, percentile 99.8 of all scored records

How severe?

9.8 Critical

CVSS v3.1 base score, from CISA's enrichment of the record

What should I do?

CISA deadline 2 Jun 2023. Apply updates per vendor instructions.

Advisories and patches (12)

Which versions are affected?

Not stated. The CVE record gives vendor and product as “n/a” and the version as “unspecified”.

Source: CISA Known Exploited Vulnerabilities (KEV) catalog, 2026.10.28, as of 28 Oct 2026; FIRST Exploit Prediction Scoring System (EPSS), v2026.06.15, as of 28 Oct 2026; CVE List V5 (CVE Program), cve_2026-10-28_0000Z, as of 28 Oct 2026. About the data.

What to do

Required action, set by CISA

Apply updates per vendor instructions.

CISA due date for this action: 2 June 2023.

Advisories and patches

openSUSE-SU-2016:1222 (Vendor advisory)
RHSA-2016:0677 (Vendor advisory)
SUSE-SU-2016:1299 (Vendor advisory)
RHSA-2016:1039 (Vendor advisory)
RHSA-2016:0701 (Vendor advisory)
USN-2972-1 (Vendor advisory)
SUSE-SU-2016:1303 (Vendor advisory)
SUSE-SU-2016:1475 (Vendor advisory)
openSUSE-SU-2016:1235 (Vendor advisory)
openSUSE-SU-2016:1262 (Vendor advisory)
SUSE-SU-2016:1300 (Vendor advisory)
RHSA-2016:0676 (Vendor advisory)

Linked from CISA's catalog entry

Affected products and versions

The CVE record does not name affected products or versions: vendor and product are “n/a” and the version is “unspecified”.

Source: CVE List V5 (CVE Program), cve_2026-10-28_0000Z, as of 28 Oct 2026. About the data.

About this vulnerability

Oracle Java SE and JRockit contains an unspecified vulnerability that allows remote attackers to affect confidentiality, integrity, and availability via vectors related to Java Management Extensions (JMX). This vulnerability can be exploited through sandboxed Java Web Start applications and sandboxed Java applets. It can also be exploited by supplying data to APIs in the specified component without using sandboxed Java Web Start applications or sandboxed Java applets, such as through a web service.

Summary: CISA's KEV catalog, as of 28 Oct 2026.

CISA added CVE-2016-3427 to its Known Exploited Vulnerabilities (KEV) catalog on 12 May 2023.
CISA's ransomware flag for this entry is "Unknown": no evidence of ransomware use in the catalog, which is not proof of none.
The due date CISA sets for the required action is 2 Jun 2023.
The CVE record was published on 21 Apr 2016, 2,577 days before it was added to KEV.
The CVE record carries a CVSS v3.1 base score of 9.8 (Critical), taken from CISA's enrichment of the record.
FIRST's EPSS model puts the probability of exploitation in the next 30 days at 92.3% (percentile 99.8), as of 28 Oct 2026.
CISA's SSVC assessment in the CVE record: exploitation active, automatable yes, technical impact total.

Source: CISA Known Exploited Vulnerabilities (KEV) catalog, 2026.10.28, as of 28 Oct 2026; CVE List V5 (CVE Program), cve_2026-10-28_0000Z, as of 28 Oct 2026; FIRST Exploit Prediction Scoring System (EPSS), v2026.06.15, as of 28 Oct 2026. About the data.

Description

Unspecified vulnerability in Oracle Java SE 6u113, 7u99, and 8u77; Java SE Embedded 8u77; and JRockit R28.3.9 allows remote attackers to affect confidentiality, integrity, and availability via vectors related to JMX.

Source: CVE List V5 (CVE Program), cve_2026-10-28_0000Z, as of 28 Oct 2026. About the data.

Weakness

CWE-284: Improper Access Control

CWE and CAPEC are maintained by MITRE; the entries are those named in the CVE record and the KEV entry.

Timeline

Date	Event
21 Apr 2016	CVE record published
12 May 2023	Added to CISA KEV
2 Jun 2023	CISA due date for the required action
21 Oct 2025	CVE record last updated

References

47 more in the CVE record.

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