CVE-2010-0840 Oracle JRE Unspecified

Exploited in the wild Critical 9.8 Published 1 Apr 2010 Updated 22 Oct 2025

Remote attackers can execute arbitrary code by exploiting improper checks in privileged methods within the Java Runtime Environment.

Exploited in the wild: Since 25 May 2022
Login needed: Not needed
Attackable: Over the internet
Victim action needed: Not needed
Fix: Available

What is CVE-2010-0840?

CVE-2010-0840 is a critical vulnerability in Canonical Ubuntu Linux, published on 1 Apr 2010. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

Unspecified vulnerability in the Java Runtime Environment component in Oracle Java SE and Java for Business 6 Update 18, 5.0 Update 23, and 1.4.2_25 allows remote attackers to affect confidentiality, integrity, and availability via unknown vectors. NOTE: the previous information was obtained from the March 2010 CPU. Oracle has not commented on claims from a reliable researcher that this is related to improper checks when executing privileged methods in the Java Runtime Environment (JRE), which allows attackers to execute arbitrary code via (1) an untrusted object that extends the trusted class but has not modified a certain method, or (2) "a similar trust issue with interfaces," aka "Trusted Methods Chaining Remote Code Execution Vulnerability."

Which versions are affected by CVE-2010-0840?

It affects 3 products.

Products include Canonical Ubuntu Linux, Opensuse Opensuse, Oracle Jre.

How do I fix CVE-2010-0840?

Apply the vendor's patch. US federal agencies must fix it by 15 Jun 2022.

Is CVE-2010-0840 being exploited?

Yes. Attackers have exploited CVE-2010-0840 in the wild since at least 25 May 2022.

Public exploit code: 1 Metasploit module and 1 Exploit-DB entry.

All Canonical Ubuntu Linux vulnerabilities

Sources

Also known as GHSA-8rrv-3xx7-wmfc.