`CVE-2010-4452` JRE

Affected software	JRE
Severity	10.0 High CVSS 2.0
Published	17 Feb 2011
Updated	19 Oct 2026

Description

Unspecified vulnerability in the Deployment component in Java Runtime Environment (JRE) in Oracle Java SE and Java for Business 6 Update 23 and earlier allows remote untrusted Java Web Start applications and untrusted Java applets to affect confidentiality, integrity, and availability via unknown vectors.

Exploitation status

Exploited

Real-world exploitation reported by VulnCheck KEV. CISA has not confirmed it.

CISA KEV not listed
VulnCheck KEV listed Exploitation reported in the wild. 2 citations · earliest 2011-06-20.
CISA Vulnrichment no assessment published
Indexed PoC 2 indexed Published artifacts you can open, in Exploit-DB, Metasploit; first seen 2011-03-16.
EPSS 83% chance in 30 days A model's forecast, not a report of exploitation. Higher than 99.7% of all scored CVEs.

VulnCheck KEV

Exploitation evidence from VulnCheck Known Exploited Vulnerabilities (VulnCheck KEV), used under VulnCheck's community terms. View CVE-2010-4452 in VulnCheck (free account).

Evidence	Source	Detail	Date
Reported exploitation	web.archive.org	/web/20110727214953/http://community.websense.com/blogs/securitylabs/archive/2011/06/20/malware-campaign-uses-direct-injection-of-java-exploit-code.aspx	2011-06-20
Reported exploitation	securelist.com	/massive-dns-poisoning-attacks-in-brazil/31628	2011-11-07

Evidence

Source

Detail

Date

Reported exploitation

web.archive.org

/web/20110727214953/http://community.websense.com/blogs/securitylabs/archive/2011/06/20/malware-campaign-uses-direct-injection-of-java-exploit-code.aspx

2011-06-20

Reported exploitation

securelist.com

/massive-dns-poisoning-attacks-in-brazil/31628

2011-11-07

Index	Artifact	Stars	First seen
Exploit-DB	Sun Java Applet2ClassLoader - Remote Code Execution (Metasploit)		2011-03-16
Metasploit	Sun Java Applet2ClassLoader Remote Code Execution (excellent rank)

Index

Artifact

Stars

First seen

Exploit-DB

Sun Java Applet2ClassLoader - Remote Code Execution (Metasploit)

2011-03-16

Metasploit

Sun Java Applet2ClassLoader Remote Code Execution (excellent rank)

Waratek protection

Outside Waratek scope

A Java vulnerability, but not one Waratek protects. It affects only Java on a user's desktop (applets, Web Start, JavaFX, the installer), sits in a product the Waratek agent can't be installed into, or is in a package we don't expect in business applications. The decision below says which.

Protection none
Action not pursued none
Review human Researcher
Record active

Decided by	A researcher's recorded decision for this specific CVE
Finding	A researcher set this CVE's status to Outside Waratek scope.

Decided by

A researcher's recorded decision for this specific CVE

Finding

A researcher set this CVE's status to Outside Waratek scope.

Waratek research note

written 2026-11-13

Written by a Waratek engineer who reviewed this CVE. Their decision sets the status above, ahead of every automated rule except a withdrawal.

Comments

Client-side: Oracle's February 2011 Java SE CPU says this applies to client deployment of Java only and can be exploited only through untrusted Java Web Start applications and untrusted applets. The public exploit is Metasploit's windows/browser/java_codebase_trust (EDB-16990), an applet that abuses Applet2ClassLoader's codebase handling in the browser plug-in. A server JVM never loads applets. Oracle's April 2011 CPU lists the CVE again under Fusion Middleware for JRockit, which is why java-client-side does not decide it on its own.

Affected software and releases

Oracle advisories

Advisory	Type	Quarter	Products Oracle names in its risk matrix
Oracle Critical Patch Update April 2011 ↗	CPU	2011-Q2	Oracle Fusion Middleware / - (R27.6.8 and before: JRE/JDK 1.4.2, 5 and 6; R28.1.1 and before: JRE/JDK 5 and 6) Oracle's note: Oracle released a Java Critical Patch Update in February 2011 to address multiple vulnerabilities affecting the Java Runtime Environment. Oracle CVE-2010-4452 refers to the advisories that were applicable to JRockit from the Java Critical Patch Update. The CVSS score of this vulnerability CVE# reflects the highest among those fixed in JRockit. The complete list of all advisories addressed in JRockit under CVE-2010-4452 is as follows: CVE-2010-4448, CVE-2010-4450, CVE-2010-4454, CVE-2010-4462, CVE-2010-4465, CVE-2010-4468, CVE-2010-4470, CVE-2010-4471, CVE-2010-4472, CVE-2010-4473 and CVE-2010-4476.
Java SE CPU Feb 2011 ↗	CPU	2011-Q1	Oracle Java SE and Java for Business / Java Runtime Environment (6 Update 23 and before) Oracle's note: Applies to client deployment of Java only. This vulnerability can be exploited only through Untrusted Java Web Start applications and Untrusted Java applets. (Untrusted Java Web Start applications and untrusted applets run in the Java sandbox with limited privileges.)

Advisory

Type

Quarter

Products Oracle names in its risk matrix

Oracle Critical Patch Update April 2011 ↗

CPU

2011-Q2

Oracle Fusion Middleware / - (R27.6.8 and before: JRE/JDK 1.4.2, 5 and 6; R28.1.1 and before: JRE/JDK 5 and 6)
Oracle's note: Oracle released a Java Critical Patch Update in February 2011 to address multiple vulnerabilities affecting the Java Runtime Environment. Oracle CVE-2010-4452 refers to the advisories that were applicable to JRockit from the Java Critical Patch Update. The CVSS score of this vulnerability CVE# reflects the highest among those fixed in JRockit. The complete list of all advisories addressed in JRockit under CVE-2010-4452 is as follows: CVE-2010-4448, CVE-2010-4450, CVE-2010-4454, CVE-2010-4462, CVE-2010-4465, CVE-2010-4468, CVE-2010-4470, CVE-2010-4471, CVE-2010-4472, CVE-2010-4473 and CVE-2010-4476.

Java SE CPU Feb 2011 ↗

CPU

2011-Q1

Oracle Java SE and Java for Business / Java Runtime Environment (6 Update 23 and before)
Oracle's note: Applies to client deployment of Java only. This vulnerability can be exploited only through Untrusted Java Web Start applications and Untrusted Java applets. (Untrusted Java Web Start applications and untrusted applets run in the Java sandbox with limited privileges.)

Oracle components and versions

Family	Component	Versions, as Oracle lists them	Read as
Oracle Fusion Middleware	-	R27.6.8 and before: JRE/JDK 1.4.2, 5 and 6; R28.1.1 and before: JRE/JDK 5 and 6	5.6
Oracle Java SE and Java for Business	Java Runtime Environment	6 Update 23 and before

Family

Component

Versions, as Oracle lists them

Read as

Oracle Fusion Middleware

R27.6.8 and before: JRE/JDK 1.4.2, 5 and 6; R28.1.1 and before: JRE/JDK 5 and 6

5.6

Oracle Java SE and Java for Business

Java Runtime Environment

6 Update 23 and before

Products and versions

2 products, 45 version entries

Source	Vendor	Product	Scheme	Affected versions
nvd	sun	jdk	javase	1.6.0 · ≤ 6.0.0.0 · 1.6.0:update1 · 1.6.0:update1_b06 · 1.6.0:update2 · 1.6.0:update_3 · 1.6.0:update_4 · 1.6.0:update_5 · 1.6.0:update_6 · 1.6.0:update_7 · 1.6.0:update_10 · 1.6.0:update_11 · 1.6.0:update_12 · 1.6.0:update_13 · 1.6.0:update_14 · 1.6.0:update_15 · 1.6.0:update_16 · 1.6.0:update_17 · 1.6.0:update_18 · 1.6.0:update_19 · 1.6.0:update_20 · 1.6.0:update_21 · 1.6.0:update_22
nvd	sun	jre	javase	1.6.0 · ≤ 6.0.0.0 · 1.6.0:update_1 · 1.6.0:update_2 · 1.6.0:update_3 · 1.6.0:update_4 · 1.6.0:update_5 · 1.6.0:update_6 · 1.6.0:update_7 · 1.6.0:update_10 · 1.6.0:update_11 · 1.6.0:update_12 · 1.6.0:update_13 · 1.6.0:update_14 · 1.6.0:update_15 · 1.6.0:update_16 · 1.6.0:update_17 · 1.6.0:update_18 · 1.6.0:update_19 · 1.6.0:update_20 · 1.6.0:update_21 · 1.6.0:update_22

Source

Vendor

Product

Scheme

Affected versions

nvd

sun

jdk

javase

1.6.0 · ≤ 6.0.0.0 · 1.6.0:update1 · 1.6.0:update1_b06 · 1.6.0:update2 · 1.6.0:update_3 · 1.6.0:update_4 · 1.6.0:update_5 · 1.6.0:update_6 · 1.6.0:update_7 · 1.6.0:update_10 · 1.6.0:update_11 · 1.6.0:update_12 · 1.6.0:update_13 · 1.6.0:update_14 · 1.6.0:update_15 · 1.6.0:update_16 · 1.6.0:update_17 · 1.6.0:update_18 · 1.6.0:update_19 · 1.6.0:update_20 · 1.6.0:update_21 · 1.6.0:update_22

nvd

sun

jre

javase

1.6.0 · ≤ 6.0.0.0 · 1.6.0:update_1 · 1.6.0:update_2 · 1.6.0:update_3 · 1.6.0:update_4 · 1.6.0:update_5 · 1.6.0:update_6 · 1.6.0:update_7 · 1.6.0:update_10 · 1.6.0:update_11 · 1.6.0:update_12 · 1.6.0:update_13 · 1.6.0:update_14 · 1.6.0:update_15 · 1.6.0:update_16 · 1.6.0:update_17 · 1.6.0:update_18 · 1.6.0:update_19 · 1.6.0:update_20 · 1.6.0:update_21 · 1.6.0:update_22

References

URL	Tags
http://marc.info/?l=bugtraq&m=134254866602253&w=2
http://marc.info/?l=bugtraq&m=134254957702612&w=2
http://secunia.com/advisories/44954
http://securityreason.com/securityalert/8145
http://www.oracle.com/technetwork/topics/security/cpuapr2011-301950.html
http://www.oracle.com/technetwork/topics/security/javacpufeb2011-304611.html	Patch, Vendor Advisory
http://www.redhat.com/support/errata/RHSA-2011-0282.html
http://www.redhat.com/support/errata/RHSA-2011-0880.html
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A12927
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A14230

URL

Timeline

Published	2011-02-17	By the CVE Program.
VulnCheck KEV: earliest evidence	2011-06-20	Date of the oldest evidence of exploitation in VulnCheck KEV's record. VulnCheck does not publish the date it listed the CVE.
VulnCheck KEV: latest evidence	2011-11-07	Date of the newest report, exploit reference or honeypot sighting in VulnCheck KEV's record.
NVD record modified	2026-06-16	NVD's own last-modified date for this record.
Last VRT activity	2026-10-19	Most recent commit touching this CVE's classification, patch or rule file.
Classification created	2026-11-13	First commit adding this CVE's research note.

Published

2011-02-17

By the CVE Program.

VulnCheck KEV: earliest evidence

2011-06-20

Date of the oldest evidence of exploitation in VulnCheck KEV's record. VulnCheck does not publish the date it listed the CVE.

VulnCheck KEV: latest evidence

2011-11-07

Date of the newest report, exploit reference or honeypot sighting in VulnCheck KEV's record.

NVD record modified

2026-06-16

NVD's own last-modified date for this record.

Last VRT activity

2026-10-19

Most recent commit touching this CVE's classification, patch or rule file.

Classification created

2026-11-13

First commit adding this CVE's research note.

How VRT decided (4 of 24 rules ran)

4 of 24 rules ran. The rest didn't run because an earlier rule had already settled the CVE.

# Rule Outcome Status Detail

identity: Does this identifier describe a vulnerability at all? the first rule that matches decides

1 rejected no match CVE Program withdrawal of this identifier

scope: Is it a vulnerability Waratek protects? the first rule that matches decides

2 armr-patch-file no match An ARMR patch file on disk for this CVE

3 armr-secure-rule-file no match An ARMR security-rule template on disk for this CVE

4 manual-classification decided it matched Outside Waratek scope A researcher set this CVE's status to Outside Waratek scope.

5 manual classification not reached Manual classification of this CVE in the legacy dataset

6 non-java-upstream not reached A root cause in non-Java code: an OS kernel, a C library, or a bundled runtime

7 oracle-component not reached The defect being in a component of a tracked product the agent does not reach: JavaFX, the Java SE installer, the JInitiator browser plug-in, the native WebLogic proxy plug-in, or a native part of Oracle Application Server or Collaboration Suite (HTTP Server, Web Cache, Internet Directory, mail and calendar servers). Oracle gives these no CPE of their own and names them only in the description.

8 java-client-side not reached Oracle's own risk-matrix note saying the CVE is reached only through untrusted code in the Java sandbox (applets, Web Start) or only through a client installation of Java, so a server running its own trusted code is not exposed

9 osv-maven not reached An OSV.dev record of this CVE affecting a package published to Maven Central. When every such package is one business applications do not use (Minecraft mods and launchers, Fastjson) and no tracked product is named by CPE, it settles the CVE as Outside Waratek scope instead

10 cna-maven-package not reached An affected Maven artifact named by the CNA itself

11 known-cpe-product not reached An NVD CPE naming a product ARMR tracks

12 cna-cpe-product not reached A CPE the CNA published naming a tracked product. Oracle publishes these on advisory day, months before NVD.

13 oracle-advisory-family not reached A tracked product family named in Oracle's own risk matrix. CPE cannot carry a suite name, only a module.

14 cna-named-product not reached A tracked product named in words by the CVE's own CNA, on a record with no CPE yet. Apache and Eclipse publish these on advisory day, before NVD adds CPE data.

15 non-deployable-product not reached The only affected product being a sealed appliance image, where Java runs but no -javaagent can be attached

16 unmatched-product not reached No tracked product matched above, and none present at all

disposition: What do we do about one that is? every rule runs

17 patch-hint not reached A reference pointing at the upstream fix: a commit, a PR, a Red Hat bug

18 open-source-maven not reached The affected package being open source on Maven, so the fix can be read

19 poc-derivable not reached An indexed exploit clearing the evidence bar to reverse-engineer, where there is no source to read

20 no-exploit not reached Nothing to build a rule from yet: no published exploit, no CISA record of exploitation and no source-level change to read

21 secure-rule-match not reached A vulnerability class already blocked by an ARMR security rule

22 exploited-no-fix-or-poc not reached Somebody exploiting this CVE (a CISA or VulnCheck KEV listing, or a CISA verdict of active exploitation), with no fix, source code or PoC to build a rule from

23 below-action-threshold not reached Medium or Low severity, no CISA or VulnCheck KEV listing, no PoC clearing the evidence bar, no CISA verdict, no Oracle advisory

24 no-exploit-published not reached Exploit code for this candidate, published in a reviewed catalogue or a GitHub repository with 5 or more stars, or in use per CISA or VulnCheck; not only a CISA verdict, a forecast, or nothing at all

NVD ↗ · CVE.org ↗