CVE-2015-4748: Unspecified vulnerability in Oracle Java SE 6u95, 7u80, and 8u45; JRockit R28.3.6; and Java SE Embedded 7u75 a

This week

HIGH 7.6DOWNGRADEDOWNGRADEDOWNGRADE

CVE-2015-4748 is a high-severity flaw (CVSS 7.6) 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 Embedded 8u33 allows remote attackers to affect confidentiality, integrity, and availability via unknown vectors related to Security.

Why this priority

High severity
EPSS top 1%: very likely to be exploited

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

Risk facts

CVSS score	7.6 (High)
EPSS exploit chance	44.6% (top 1%)
CISA exploited list	No
Published	2015-07-16
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

2015-07-16 11:00 UTCPublished CVE record published
2026-10-14 22:17 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-2015-4748?

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-2015-4748 being exploited?

CVE-2015-4748 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-2015-4748 affect?

CVE-2015-4748 affects jrockit, jdk, jre. Severity is high (CVSS 7.6). Unspecified vulnerability in Oracle Java SE 6u95, 7u80, and 8u45; JRockit R28.3.6; and Java SE Embedded 7u75 and Embedded 8u33 allows remote attackers to affect confidentiality, integrity, and availability via unknown vectors related to Sec

How urgent is CVE-2015-4748?

Priority 51/100. High severity; EPSS top 1%: very likely to be exploited

Software pages

Java vulnerabilities

Related CVEs

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References

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