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CVE-2012-0507: Oracle Java SE Runtime Environment (JRE) Arbitrary Code Execution Vulnerability

100
Patch now
CRITICAL 9.8EXPLOITEDREMOTEWATCHLISTDOWNGRADEDOWNGRADEMITIGATE

CVE-2012-0507 is a critical-severity flaw (CVSS 9.8) affecting jre, jre, debian 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 (JRE) component in Oracle Java SE 7 Update 2 and earlier, 6 Update 30 and earlier, and 5.0 Update 33 and earlier allows remote attackers to affect confidentiality, integrity, and availability via unknown vectors related to Concurrency. NOTE: the previous information was obtained from the February 2012 Oracle CPU. Oracle has not commented on claims from a downstream vendor and third party

Why this priority

  • Critical severity
  • EPSS top 1%: very likely to be exploited
  • Exploited in the wild (CISA KEV)
  • Used in ransomware campaigns
  • 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 chance98.2% (top 1%)
CISA exploited listYes, fix due 2022-03-24, used in ransomware
WeaknessCWE-843
Published2012-06-07
Last modified2026-08-14
Publisher (CNA): Oracle · Vendor: debian · oracle · sun · suse

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Last updated 2026-08-14 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

sun jre DOWNGRADE
Affected: 1.5.0 · 1.5.0 update1 · 1.5.0 update10 · 1.5.0 update11 · 1.5.0 update12 · 1.5.0 update13 · 1.5.0 update14 · 1.5.0 update15
Fixed in: no fixed release known
Safe to downgrade to: a release before 1.5.0
1. Check installed version
apt-cache policy jre || rpm -q jre || jre --version
2. No fixed release: DOWNGRADE to a release before 1.5.0 (Debian / Ubuntu)
apt-cache madison jre sudo apt install jre=<VERSION_BEFORE_1.5.0> sudo apt-mark hold jre
2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)
dnf --showduplicates list jre sudo dnf downgrade jre-<VERSION_BEFORE_1.5.0> sudo dnf versionlock add jre
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.
oracle jre DOWNGRADE
Affected: 1.6.0 update22 · 1.6.0 update23 · 1.6.0 update24 · 1.6.0 update25 · 1.6.0 update26 · 1.6.0 update27 · 1.6.0 update29 · 1.6.0 update30
Fixed in: no fixed release known
Safe to downgrade to: a release before 1.6.0
1. Check installed version
apt-cache policy jre || rpm -q jre || jre --version
2. No fixed release: DOWNGRADE to a release before 1.6.0 (Debian / Ubuntu)
apt-cache madison jre sudo apt install jre=<VERSION_BEFORE_1.6.0> sudo apt-mark hold jre
2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)
dnf --showduplicates list jre sudo dnf downgrade jre-<VERSION_BEFORE_1.6.0> sudo dnf versionlock add jre
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.
debian debian linux MITIGATE
Affected: 6.0 · 7.0
Fixed in: no fixed release known
Safe to downgrade to: a release before 6.0
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 desktop 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 java MITIGATE
Affected: 10 sp4 · 11 sp1
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 · beakerlib · FIXED · 1.33.4-1.fc46 · FEDORA-2026-e95a8fc2ef · source
sudo dnf upgrade --advisory=FEDORA-2026-e95a8fc2ef
Fedora ELN · createrepo_c · FIXED · 1.2.6-1.eln159 · FEDORA-2026-8bb3ba60b2 · source
sudo dnf upgrade --advisory=FEDORA-2026-8bb3ba60b2
RHEL 5 · java-1.6.0-openjdk · FIXED · java-1.6.0-openjdk-1.6.0.0-1.25.1.10.6.el5_8
sudo dnf upgrade --advisory=RHSA-2012:0322 rpm -q java-1.6.0-openjdk
RHEL 6 · java-1.6.0-openjdk · FIXED · java-1.6.0-openjdk-1.6.0.0-1.43.1.10.6.el6_2
sudo dnf upgrade --advisory=RHSA-2012:0135 rpm -q java-1.6.0-openjdk
RHEL 4 · java-1.6.0-sun · NO FIX YET

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-2012-0507?

jre: downgrade or apply the listed mitigation; jre: downgrade or apply the listed mitigation; debian linux: mitigate or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2012-0507 being exploited?

Yes. CVE-2012-0507 is on the CISA Known Exploited Vulnerabilities list, so treat it as patch-now.

What does CVE-2012-0507 affect?

CVE-2012-0507 affects jre, jre, debian linux. Severity is critical (CVSS 9.8). Unspecified vulnerability in the Java Runtime Environment (JRE) component in Oracle Java SE 7 Update 2 and earlier, 6 Update 30 and earlier, and 5.0 Update 33 and earlier allows remote attackers to affect confidentiality, integrity, and ava

How urgent is CVE-2012-0507?

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

Software pages

Java vulnerabilities · Debian vulnerabilities

Related CVEs

References

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