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CVE-2011-3544: Oracle Java SE Runtime Environment (JRE) Arbitrary Code Execution Vulnerability

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Patch now
CRITICAL 9.8EXPLOITEDREMOTEWATCHLISTUPGRADEUPGRADEMITIGATE

CVE-2011-3544 is a critical-severity flaw (CVSS 9.8) affecting jdk, jre, ubuntu linux, reported as exploited in the wild. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Unspecified vulnerability in the Java Runtime Environment component in Oracle Java SE JDK and JRE 7 and 6 Update 27 and earlier allows remote untrusted Java Web Start applications and untrusted Java applets to affect confidentiality, integrity, and availability via unknown vectors related to Scripting.

Why this priority

  • Critical severity
  • EPSS top 1%: very likely to be exploited
  • Exploited in the wild (CISA KEV)
  • Public exploit reference
  • CISA SSVC: automatable with total technical impact
  • Remotely exploitable, no login, no user action
  • On your watchlist

A fixed release or distro patch exists.

Risk facts

CVSS score9.8 (Critical)
Attack vectorNetwork (remote)
Attack complexityLow
Privileges neededNone
User interactionNone
EPSS exploit chance96.7% (top 1%)
CISA exploited listYes, fix due 2022-03-24
WeaknessCWE-284
Published2011-10-19
Last modified2026-06-16
Publisher (CNA): Oracle · Vendor: canonical · oracle · redhat · suse

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Last updated 2026-06-16 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

oracle jdk UPGRADE
Affected: < 1.6.0 · 1.6.0 · 1.6.0 update1 · 1.6.0 update10 · 1.6.0 update11 · 1.6.0 update12 · 1.6.0 update13 · 1.6.0 update14
Fixed in: 1.6.0
Safe to downgrade to: no unaffected older release
1. Check installed version
apt-cache policy jdk || rpm -q jdk || jdk --version
2. UPGRADE to 1.6.0 (Debian / Ubuntu)
sudo apt update && sudo apt install --only-upgrade jdk
2. UPGRADE (RHEL / Amazon Linux / Fedora)
sudo dnf upgrade jdk
Note
Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.
oracle jre UPGRADE
Affected: < 1.6.0 · 1.6.0 · 1.6.0 update1 · 1.6.0 update11 · 1.6.0 update12 · 1.6.0 update13 · 1.6.0 update14 · 1.6.0 update15
Fixed in: 1.6.0
Safe to downgrade to: no unaffected older release
1. Check installed version
apt-cache policy jre || rpm -q jre || jre --version
2. UPGRADE to 1.6.0 (Debian / Ubuntu)
sudo apt update && sudo apt install --only-upgrade jre
2. UPGRADE (RHEL / Amazon Linux / Fedora)
sudo dnf upgrade jre
Note
Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.
canonical ubuntu linux MITIGATE
Affected: 10.04 · 10.10 · 11.04 · 11.10
Fixed in: no fixed release known
Safe to downgrade to: a release before 10.04
Check your OS release
cat /etc/os-release; uname -r
Debian / Ubuntu
sudo apt update && sudo apt full-upgrade
RHEL / Amazon Linux / Fedora
sudo dnf upgrade --refresh
Windows
Install the latest cumulative update from Windows Update
If no patch exists yet
OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.
redhat satellite with embedded oracle DOWNGRADE
Affected: 5.4
Fixed in: no fixed release known
Safe to downgrade to: a release before 5.4
1. Check installed version
apt-cache policy satellite-with-embedded-oracle || rpm -q satellite-with-embedded-oracle || satellite-with-embedded-oracle --version
2. No fixed release: DOWNGRADE to a release before 5.4 (Debian / Ubuntu)
apt-cache madison satellite-with-embedded-oracle sudo apt install satellite-with-embedded-oracle=<VERSION_BEFORE_5.4> sudo apt-mark hold satellite-with-embedded-oracle
2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)
dnf --showduplicates list satellite-with-embedded-oracle sudo dnf downgrade satellite-with-embedded-oracle-<VERSION_BEFORE_5.4> sudo dnf versionlock add satellite-with-embedded-oracle
Downgrade risk
Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.
After downgrade
Restart the service, and keep the package held until a fixed release ships.
suse linux enterprise java MITIGATE
Affected: 10 sp4
Fixed in: no fixed release known
Safe to downgrade to: a release before 10
Check your OS release
cat /etc/os-release; uname -r
Debian / Ubuntu
sudo apt update && sudo apt full-upgrade
RHEL / Amazon Linux / Fedora
sudo dnf upgrade --refresh
Windows
Install the latest cumulative update from Windows Update
If no patch exists yet
OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.
suse linux enterprise server MITIGATE
Affected: 10 sp4
Fixed in: no fixed release known
Safe to downgrade to: a release before 10
Check your OS release
cat /etc/os-release; uname -r
Debian / Ubuntu
sudo apt update && sudo apt full-upgrade
RHEL / Amazon Linux / Fedora
sudo dnf upgrade --refresh
Windows
Install the latest cumulative update from Windows Update
If no patch exists yet
OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.

Exact fixes by distribution

A distro patch exists: prefer upgrading over downgrading.
Fedora 46 · dupeguru · FIXED · 4.3.1^20261101git7a2c79f-1.fc46 · FEDORA-2026-fe4523382c · source
sudo dnf upgrade --advisory=FEDORA-2026-fe4523382c
Fedora ELN · openexr · FIXED · 3.4.13-3.eln159 · FEDORA-2026-827a613db5 · source
sudo dnf upgrade --advisory=FEDORA-2026-827a613db5
RHEL 5 · java-1.6.0-openjdk · FIXED · java-1.6.0-openjdk-1.6.0.0-1.23.1.9.10.el5_7
sudo dnf upgrade --advisory=RHSA-2011:1380 rpm -q java-1.6.0-openjdk
RHEL 6 · java-1.6.0-openjdk · FIXED · java-1.6.0-openjdk-1.6.0.0-1.40.1.9.10.el6_1
sudo dnf upgrade --advisory=RHSA-2011:1380 rpm -q java-1.6.0-openjdk
RHEL 6 Supplementary · java-1.6.0-sun · FIXED · java-1.6.0-sun-1.6.0.29-1jpp.1.el6
sudo dnf upgrade --advisory=RHSA-2011:1384 rpm -q java-1.6.0-sun
RHEL 6 Supplementary · java-1.6.0-ibm · FIXED · java-1.6.0-ibm-1.6.0.10.0-1jpp.2.el6
sudo dnf upgrade --advisory=RHSA-2012:0034 rpm -q java-1.6.0-ibm
RHEL 4 · java-1.4.2-ibm · NOT AFFECTED
Amazon Linux 1 · see advisory · FIXED · ALAS-2011-10 · source
sudo yum update --advisory=ALAS-2011-10

Public exploits and detection

Public code exists for this CVE. Treat unpatched systems as at risk, and only run PoCs in a lab.

Verify at the official source NVD · CVE Program · CISA KEV catalog · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2011-3544?

jdk: upgrade to 1.6.0; jre: upgrade to 1.6.0; ubuntu linux: mitigate or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2011-3544 being exploited?

Yes. CVE-2011-3544 is on the CISA Known Exploited Vulnerabilities list, so treat it as patch-now.

What does CVE-2011-3544 affect?

CVE-2011-3544 affects jdk, jre, ubuntu linux. Severity is critical (CVSS 9.8). Unspecified vulnerability in the Java Runtime Environment component in Oracle Java SE JDK and JRE 7 and 6 Update 27 and earlier allows remote untrusted Java Web Start applications and untrusted Java applets to affect confidentiality, integr

How urgent is CVE-2011-3544?

Priority 100/100. Critical severity; EPSS top 1%: very likely to be exploited; Exploited in the wild (CISA KEV); Public exploit reference; CISA SSVC: automatable with total technical impact; Remotely exploitable, no login, no user action; On your watchlist

Software pages

Java vulnerabilities · Ubuntu vulnerabilities

Related CVEs

References

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