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CVE-2011-3521

33
FAUCET Score

CVE-2011-3521 is an unspecified deserialization vulnerability affecting Oracle Java SE JDK and JRE versions 7, 6 Update 27 and earlier, and 5.0 Update 31 and earlier. This critical flaw allows remote untrusted Java Web Start applications and applets to compromise confidentiality, integrity, and availability. With a CVSS score of 10.0 (AV:N/AC:L/Au:N/C:C/I:C/A:C), it represents a severe risk with low attack complexity and no authentication required. Despite its high severity, there is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
1.7.0CPE matchmatch criteria
cpe:2.3:a:sun:jdk:1.7.0:*:*:*:*:*:*:*
1.7.0CPE matchmatch criteria
cpe:2.3:a:sun:jre:1.7.0:*:*:*:*:*:*:*
<= 1.6.0CPE matchmatch criteria
cpe:2.3:a:sun:jdk:*:update_27:*:*:*:*:*:*
1.6.0CPE matchmatch criteria
cpe:2.3:a:sun:jdk:1.6.0:*:*:*:*:*:*:*
1.6.0CPE matchmatch criteria
cpe:2.3:a:sun:jdk:1.6.0:update_10:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

10.0HIGH

AV:N/AC:L/Au:N/C:C/I:C/A:C

Confidentiality Impact
COMPLETE
Integrity Impact
COMPLETE
Availability Impact
COMPLETE
Access Vector
NETWORK
Access Complexity
LOW
Authentication
NONE
Exploitability Score
10.0
Impact Score
10.0
CvssVersion
2.0

Exploit Intelligence

EPSS Score
3.93%
Probability of exploitation in next 30 days
EPSS Percentile
89.3%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0393 is in the 81st percentile among its peer group of 51,551 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (10)

redhatpatch availablevia redhat_api
Product: Supplementary for Red Hat Enterprise Linux 5Fixed in: java-1.6.0-ibm-1:1.6.0.10.0-1jpp.2.el5
View patch
redhatpatch availablevia redhat_api
Product: Extras for RHEL 4Fixed in: java-1.6.0-sun-1:1.6.0.29-1jpp.1.el4
View patch
redhatpatch availablevia redhat_api
Product: Extras for RHEL 4Fixed in: java-1.6.0-ibm-1:1.6.0.10.0-1jpp.2.el4
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 5Fixed in: java-1.6.0-openjdk-1:1.6.0.0-1.23.1.9.10.el5_7
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 6Fixed in: java-1.6.0-openjdk-1:1.6.0.0-1.40.1.9.10.el6_1
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 6 SupplementaryFixed in: java-1.6.0-sun-1:1.6.0.29-1jpp.1.el6
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 6 SupplementaryFixed in: java-1.6.0-ibm-1:1.6.0.10.0-1jpp.2.el6
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Network Satellite Server v 5.4Fixed in: java-1.6.0-ibm-1:1.6.0.14.0-1jpp.1.el6_4
View patch
redhatpatch availablevia redhat_api
Product: Supplementary for Red Hat Enterprise Linux 5Fixed in: java-1.6.0-sun-1:1.6.0.29-1jpp.1.el5
View patch
oraclevendor investigatingvia nvd_reference
View patch

Vendor Advisories (1)

redhatCVE-2011-3521Critical

OpenJDK: IIOP deserialization code execution (Deserialization, 7055902)

Oct 18, 2011

References

lists.opensuse.org / opensuse-security-announce/2012-01/msg00049.html
marc.info
marc.info
marc.info
marc.info
rhn.redhat.com / errata/RHSA-2013-1455.html
secunia.com / advisories/48308
secunia.com / advisories/48692
security.gentoo.org / glsa/glsa-201406-32.xml
exchange.xforce.ibmcloud.com / vulnerabilities/70850
oval.cisecurity.org / repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A13662
ibm.com / developerworks/java/jdk/alerts
oracle.com / technetwork/topics/security/javacpuoct2011-443431.html
Vendor Advisory
redhat.com / support/errata/RHSA-2011-1384.html
securityfocus.com / bid/50215
securitytracker.com / id
ubuntu.com / usn/USN-1263-1