CVE-2013-0422VulnerabilityPublished 05/25/2022Updated 10/24/2026

CVE-2013-0422: Oracle JRE Remote Code Execution Vulnerability

Affects Oracle Java Runtime Environment (JRE)Source CISA KEV

Severity

High

No CVSS score published yet

Exploitation: Actively exploited – in CISA KEV since 05/25/2022
KEV deadline: 06/15/2022
Ransomware: Used in ransomware campaigns
EPSS: 97.0% chance of exploitation in 30 days – higher than 99% of CVEs

What to do

CISA required action

Apply updates per vendor instructions.

nvd.nist.gov/vuln/detail/CVE-2013-0422 (opens in a new tab)

Description

CVE-2013-0422 is a high-severity vulnerability in Oracle Java Runtime Environment (JRE) where improper restriction of Java applet permissions allows remote code execution. This flaw has been exploited in the wild and is known to have been used in ransomware campaigns.

Summary

This vulnerability arises from a weakness in the way Java restricts permissions for Java applets, enabling attackers to execute arbitrary commands on affected systems remotely. It affects Oracle JRE and has been actively exploited, including in ransomware attacks.

Impact

Successful exploitation allows remote attackers to execute arbitrary code on the vulnerable system, potentially leading to full system compromise. The vulnerability has been observed in active exploitation campaigns, including ransomware distribution.

Mitigation

Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Users should consult Oracle's official security advisories for updates and apply any available patches or mitigations promptly.

Weaknesses

CWE-264Unclassified weakness (opens in a new tab)

What to do

Description

AnalysisAI-generated, updated 10/24/2026, 11:49:19 UTC

Weaknesses

References

Related threats