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CVE-2012-5076 — Oracle Java SE Sandbox Bypass Vulnerability

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HIGH severity🔴 Actively Exploited · CISA KEV

🔴 CVE-2012-5076 is being actively exploited in the wild. Check if your infrastructure is exposed: ⚡ Free Exposure Scan

Overview

The default Java security properties configuration did not restrict access to the com.sun.org.glassfish.external and com.sun.org.glassfish.gmbal packages. An untrusted Java application or applet could use these flaws to bypass Java sandbox restrictions.

Vulnerability details

CVE ID: CVE-2012-5076
Vulnerability: Oracle Java SE Sandbox Bypass Vulnerability
Vendor: Oracle
Affected products: Oracle: Java SE
Severity: HIGH
Exploitation status: Actively exploited in the wild (CISA KEV)
Published: 2022-03-28

Remediation guidance

CVE-2012-5076 is in CISA's Known Exploited Vulnerabilities (KEV) catalog — U.S. federal civilian agencies are required to remediate it under Binding Operational Directive 22-01. Treat it as a priority for every environment.

Apply the vendor's official security update for Oracle the affected product as soon as possible. Where a patch is unavailable, apply vendor mitigations or isolate/segment exposed systems.

Hunt for indicators of compromise tied to this vulnerability and confirm logging/EDR coverage on affected assets.

Authoritative references

Remediate CVE-2012-5076 — and stay ahead of the next one

CVE-2012-5076 is listed in the CISA KEV catalog as actively exploited — treat remediation as urgent. Scan your domain free to see whether CVE-2012-5076 and other Oracle issues affect you and get a prioritized remediation report (full report from ₹999) — or stream the full feed of 1,600+ actively-exploited CVEs straight into your SOC.

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