CVE-2016-3427: in the CISA KEV catalogue

Oracle Java SE and JRockit Unspecified Vulnerability. CISA added CVE-2016-3427 to the Known Exploited Vulnerabilities catalogue on 2023-05-12 with a default due date of 2023-06-02. Known ransomware campaign use: Unknown. Forensic triage flag: No.

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. (CISA description)

Vendor / product: Oracle Java SE and JRockit
CWE: Not listed
CISA required action: Apply updates per vendor instructions.
EPSS: 92%, percentile 99 (scored 2026-11-03)

EPSS puts about 92 in 100 odds (92%) on exploitation activity being observed in the next 30 days. Its score is higher than or equal to that of 99% of scored CVEs. This is a model estimate about exploitation anywhere, not about your environment.

Vendor and reference links (from CISA)

Your own deadline under CISA BOD 26-04 depends on exposure, automatability and technical impact: work it out with the BOD 26-04 calculator.

Data dates. CISA KEV catalogue version 2026.11.03, released 2026-11-03, 1,767 entries (checked 2026-11-03). EPSS model v2026.06.15, scored 2026-11-03, 399,388 CVEs. Sources: CISA and FIRST (EPSS by FIRST; scores generated by Empirical Security). Copied to our own database and refreshed automatically; if a refresh fails, the previous copy keeps serving with its own date.

Frequently asked questions

Is CVE-2016-3427 in the CISA KEV catalogue?

Yes. CISA added CVE-2016-3427 (Oracle Java SE and JRockit Unspecified Vulnerability) to the Known Exploited Vulnerabilities catalogue on 2023-05-12. CISA's default due date for it is 2023-06-02.

Is CVE-2016-3427 used in ransomware attacks?

CISA marks known ransomware campaign use as Unknown for CVE-2016-3427. That means CISA lacks confirmation, not that ransomware groups do not use it.

What should I do about CVE-2016-3427?

CISA's required action: Apply updates per vendor instructions.

Sources

CISA, Known Exploited Vulnerabilities Catalog (accessed 2026-11-03)
FIRST, Exploit Prediction Scoring System (EPSS) (EPSS by FIRST; scores generated by Empirical Security)
NVD record for CVE-2016-3427