CVE-2015-4749: Unspecified vulnerability in Oracle Java SE 6u95, 7u80, and 8u45; JRockit R28.3.6; and Java SE Embedded 7u75 a

Routine

MEDIUM 4.3DOWNGRADEDOWNGRADEDOWNGRADE

CVE-2015-4749 is a medium-severity flaw (CVSS 4.3) 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 6u95, 7u80, and 8u45; JRockit R28.3.6; and Java SE Embedded 7u75 and 8u33 allows remote attackers to affect availability via vectors related to JNDI.

Why this priority

No elevated risk signals yet

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

Risk facts

CVSS score	4.3 (Medium)
EPSS exploit chance	3.3% (top 11%)
CISA exploited list	No
Published	2015-07-16
Last modified	2026-06-17

Publisher (CNA): Oracle · Vendor: oracle

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2015-07-16 11:00 UTCPublished CVE record published
2026-06-17 00:27 UTCUpdated Record last modified

oracle jrockit DOWNGRADE

Affected: r28.3.6

Fixed in: no fixed release known

Safe to downgrade to: a release before r28.3.6

1. Check installed version

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

2. No fixed release: DOWNGRADE to a release before r28.3.6 (Debian / Ubuntu)

apt-cache madison jrockit sudo apt install jrockit=<VERSION_BEFORE_r28.3.6> sudo apt-mark hold jrockit

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

dnf --showduplicates list jrockit sudo dnf downgrade jrockit-<VERSION_BEFORE_r28.3.6> 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 update95 · 1.7.0 update75 · 1.7.0 update80 · 1.8.0 update_33 · 1.8.0 update45

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_95 · 1.7.0 update_75 · 1.7.0 update_80 · 1.8.0 update_33 · 1.8.0 update_45

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-2015-4749?

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-2015-4749 being exploited?

CVE-2015-4749 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-2015-4749 affect?

CVE-2015-4749 affects jrockit, jdk, jre. Severity is medium (CVSS 4.3). Unspecified vulnerability in Oracle Java SE 6u95, 7u80, and 8u45; JRockit R28.3.6; and Java SE Embedded 7u75 and 8u33 allows remote attackers to affect availability via vectors related to JNDI.

How urgent is CVE-2015-4749?

Priority 37/100. No elevated risk signals yet.

Software pages

Java vulnerabilities

Related CVEs

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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
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References

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