CVE-2015-4893: Unspecified vulnerability in Oracle Java SE 6u101, 7u85, and 8u60; Java SE Embedded 8u51; and JRockit R28.3.7

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MEDIUM 5.0DOWNGRADEDOWNGRADEDOWNGRADE

CVE-2015-4893 is a medium-severity flaw (CVSS 5.0) affecting jrockit, jdk, jre. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Unspecified vulnerability in Oracle Java SE 6u101, 7u85, and 8u60; Java SE Embedded 8u51; and JRockit R28.3.7 allows remote attackers to affect availability via vectors related to JAXP, a different vulnerability than CVE-2015-4803 and CVE-2015-4911.

Why this priority

EPSS top 8%: very likely to be exploited

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score	5.0 (Medium)
EPSS exploit chance	4.6% (top 8%)
CISA exploited list	No
Published	2015-10-21
Last modified	2026-10-14

Publisher (CNA): Oracle · Vendor: oracle

Last updated 2026-10-14 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2015-10-21 23:59 UTCPublished CVE record published
2026-10-14 22:17 UTCUpdated Record last modified

oracle jrockit DOWNGRADE

Affected: r28.3.7

Fixed in: no fixed release known

Safe to downgrade to: a release before r28.3.7

1. Check installed version

apt-cache policy jrockit || rpm -q jrockit || jrockit --version

2. No fixed release: DOWNGRADE to a release before r28.3.7 (Debian / Ubuntu)

apt-cache madison jrockit sudo apt install jrockit=<VERSION_BEFORE_r28.3.7> sudo apt-mark hold jrockit

2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list jrockit sudo dnf downgrade jrockit-<VERSION_BEFORE_r28.3.7> sudo dnf versionlock add jrockit

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 jdk DOWNGRADE

Affected: 1.6.0 update101 · 1.7.0 update85 · 1.8.0 update51 · 1.8.0 update60

Fixed in: no fixed release known

Safe to downgrade to: a release before 1.6.0

1. Check installed version

apt-cache policy jdk || rpm -q jdk || jdk --version

2. No fixed release: DOWNGRADE to a release before 1.6.0 (Debian / Ubuntu)

apt-cache madison jdk sudo apt install jdk=<VERSION_BEFORE_1.6.0> sudo apt-mark hold jdk

2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list jdk sudo dnf downgrade jdk-<VERSION_BEFORE_1.6.0> sudo dnf versionlock add jdk

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 update_101 · 1.7.0 update_85 · 1.8.0 update_51 · 1.8.0 update_60

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.

Verify at the official source NVD · CVE Program · 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-2015-4893?

jrockit: downgrade or apply the listed mitigation; jdk: downgrade or apply the listed mitigation; jre: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2015-4893 being exploited?

CVE-2015-4893 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2015-4893 affect?

CVE-2015-4893 affects jrockit, jdk, jre. Severity is medium (CVSS 5.0). Unspecified vulnerability in Oracle Java SE 6u101, 7u85, and 8u60; Java SE Embedded 8u51; and JRockit R28.3.7 allows remote attackers to affect availability via vectors related to JAXP, a different vulnerability than CVE-2015-4803 and CVE-2

How urgent is CVE-2015-4893?

Priority 40/100. EPSS top 8%: very likely to be exploited

Software pages

Java vulnerabilities

Related CVEs

CVE-2016-0483 HIGH 10.0 DOWNGRADE DOWNGRADE Unspecified vulnerability in Oracle Java SE 6u105, 7u91, and 8u66; Java SE Embedded 8u65; and JRockit R28.3.8
CVE-2016-0475 MEDIUM 5.8 DOWNGRADE DOWNGRADE Unspecified vulnerability in the Java SE, Java SE Embedded, and JRockit components in Oracle Java SE 8u66; Jav
CVE-2015-4911 MEDIUM 5.0 DOWNGRADE DOWNGRADE Unspecified vulnerability in Oracle Java SE 6u101, 7u85, and 8u60; Java SE Embedded 8u51; and JRockit R28.3.7
CVE-2015-4872 MEDIUM 5.0 DOWNGRADE DOWNGRADE Unspecified vulnerability in Oracle Java SE 6u101, 7u85, and 8u60; Java SE Embedded 8u51; and JRockit R28.3.7
CVE-2015-4803 MEDIUM 5.0 DOWNGRADE DOWNGRADE Unspecified vulnerability in Oracle Java SE 6u101, 7u85, and 8u60; Java SE Embedded 8u51; and JRockit R28.3.7

References

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