Threats / Oracle / CVE-2013-0422
CVE-2013-0422
· EUVD no mirror located
· GCVE no mirror located
Verified 2026-08-04
Oracle Java Runtime Environment (JRE) vulnerability
A permissions restriction bypass in Java applets allows attackers to execute arbitrary commands on vulnerable systems running Oracle JRE.
Verdict
Today item, not a backlog item.
This vulnerability permits remote code execution through malicious Java applets that circumvent sandbox restrictions. Active exploitation and ransomware deployment have been documented, making it a critical threat to systems running unpatched Java Runtime Environments.
CISA KEV Yes · 2022-05-254Ransomware use Flagged4EPSS 0.97612 (verify live)5CVSS 9.8 (CISA)3CISA SSVC Exploitation: active · Automatable: yes · Impact: total3Exploit Weaponized · public exploit · Metasploit module11
01
Is it exploitable?
— the evidence, ranked above the scoreReported exploitation
11 independent public reports of in-the-wild exploitation are cataloged.Distinct reporting sources (vendor, incident response, government); open them for the underlying claims.
Exploited in the wild
Listed in the CISA Known Exploited Vulnerabilities catalog (added 2022-05-25), flagged for known ransomware use.
Probability (EPSS)
EPSS 0.97612 — modeled likelihood of exploitation activity.EPSS is a daily-changing model output — open the source for today's value.
Severity / affected
CVSS 9.8 (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H) · Affected: Oracle, Java Runtime Environment (JRE). Confirm exact fixed builds in the vendor advisory.CVSS — CISA-assigned via the ADP container (CVE.org), version 3.1; the CNA left no metrics, so CISA's own score is used ahead of NVD.
Weakness (CWE)
Mapped to CWE-264 Permissions/Privileges/Access Control — weakness family: Authorization / access control.CWE assignment from the public NVD record (may be stale); the weakness class drives how the flaw is exploited.
CISA SSVC (triage disposition)
Exploitation: active · Automatable: yes · Technical Impact: totalCISA's own stakeholder-specific triage inputs, published in the CVE record (CISA Coordinator role). NOTE: this is CISA's three decision points; the final Act/Attend/Track decision also requires a Mission & Well-being input not published here, so no overall decision is asserted.
Currency of the record
CISA added this to its KEV catalog 3422 days after the CVE record was published.KEV lag = CISA-KEV dateAdded − CVE.org datePublished; a floor on how long the known-exploited flaw sat in the public record before the federal catalog listed it. Severity/weakness here is CNA- or CISA-assigned (current at disclosure), independent of NVD's analysis backlog.
Public exploit available
Public exploit tooling is catalogued for this CVE (a functional/weaponized public exploit). Catalog entries: Metasploit module. We link the catalog page(s) only — no payload or code is hosted or restated here.Link, never host — the catalog page is the source; basicsecurity.net does not redistribute payloads.
02
Who’s exploiting it?
— attribution turns risk into urgencyAttribution not established
No confirmed (advisory-backed) threat-actor attribution is established for this record. Absence of a named actor is not absence of compromise — see Coverage & confidence.
03
Why it matters
— the attack path, told twice: adversary, then board1
Front door — unauthenticated access narrative 1
Attacker
I craft a malicious Java applet that exploits the permissions restriction bypass to escape the sandbox environment.
Business
An attacker gains the ability to execute arbitrary code with the privileges of the user running the Java application.
2
Keys to the kingdom — privilege/identity takeover narrative 2
Attacker
I distribute the applet through compromised websites or drive-by download attacks targeting users who visit them.
Business
Affected organizations experience widespread system compromise across user endpoints without requiring user interaction beyond visiting a webpage.
3
Lateral reach — past segmentation narrative 3
Attacker
I deploy ransomware or data exfiltration malware on compromised systems to monetize or conduct espionage.
Business
Organizations face operational disruption, data loss, extortion demands, and regulatory penalties from ransomware campaigns exploiting this vulnerability.
04
What to do
— defensible action- Remediate per the vendor advisory — confirm the fixed build for your version and verify exposure.1
Say it to the boardA vulnerability with this evidence profile is a defensible budget line, not a backlog ticket — fund the change against the proof above.
05