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Dossier · Vulnerability

Actively exploited · CISA KEV · NVD published 2012-08-28

CVE-2012-4681

Multiple vulnerabilities in the Java Runtime Environment (JRE) component in Oracle Java SE 7 Update 6 and earlier allow remote attackers to execute arbitrary code via a crafted applet that bypasses SecurityManager restrictions by (1) using com.sun.beans.finder.ClassFinder.findClass and leveraging an exception with the forName method to access restricted classes from arbitrary packages such as sun.awt.SunToolkit, then (2) using "reflection with a trusted immediate caller" to leverage the getField method to access and modify private fields, as exploited in the wild in August 2012 using Gondzz.class and Gondvv.class.

  1. First PoC
  2. 4861 days →Metasploit
  3. 304 days →First cited attacker

Signals

Exploited in the wild
Yesadded 2022-03-03 · due 2022-03-24 · known ransomware use. An observation, not a forecast.
EPSS · 30-day forecast
99%Chance of exploitation in the next 30 days, 100th percentile of all CVEs. A forecast; KEV outranks it.
CVSS · NVD · CRITICAL
9.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Internet exposure
not stated by sourcesNo exposure census on this CVE's dispatches.

Exploits

2 known · links only

Metasploit1

  1. Java 7 Applet Remote Code Execution ↗

    The exploit takes advantage of two issues in JDK 7: The ClassFinder and MethodFinder.findMethod(). Both were newly introduced in JDK 7. ClassFinder is a replacement for classForName back in JDK 6. It allows untrusted code to obtain a reference and have access to a restricted package in JDK 7, which can be used to abuse sun.awt.SunToolkit (a restricted package). With sun.awt.SunToolkit, we can actually invoke getField() by abusing findMethod()

    ruby · seen 2026-10-18

Exploit-DB1

  1. Java 7 Applet - Remote Code Execution (Metasploit) ↗

    created 2012-08-27

On the wire

0 dispatches

No dispatch on our wire has named this CVE yet.

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