CVE-2015-9288: The Unity Web Player plugin before 4.6.6f2 and 5.x before 5.0.3f2 allows attackers to read messages or access

Routine

MEDIUM 6.5UPGRADE

CVE-2015-9288 is a medium-severity flaw (CVSS 6.5) affecting web player. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

The Unity Web Player plugin before 4.6.6f2 and 5.x before 5.0.3f2 allows attackers to read messages or access online services via a victim's credentials

Why this priority

No elevated risk signals yet

A fixed release or distro patch exists.

Risk facts

CVSS score	6.5 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	Low
User interaction	None
EPSS exploit chance	0.9% (top 41%)
CISA exploited list	No
Weakness	CWE-200
Published	2019-07-29
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: unity

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

Am I affected?

Timeline

2019-07-29 16:15 UTCPublished CVE record published
2026-06-17 00:36 UTCUpdated Record last modified

unity web player UPGRADE

Affected: < 4.6.6f2 · >= 5.0 and < 5.0.3f2

Fixed in: 4.6.6f2, 5.0.3f2

Safe to downgrade to: a release before 5.0

1. Check installed version

apt-cache policy web-player || rpm -q web-player || web-player --version

2. UPGRADE to 4.6.6f2 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade web-player

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade web-player

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

3. If no update is available yet, DOWNGRADE to a release before 5.0 (Debian / Ubuntu)

apt-cache madison web-player sudo apt install web-player=<VERSION_BEFORE_5.0> sudo apt-mark hold web-player

3. If no update is available yet, DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list web-player sudo dnf downgrade web-player-<VERSION_BEFORE_5.0> sudo dnf versionlock add web-player

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-2015-9288?

web player: upgrade to 4.6.6f2, 5.0.3f2. Exact commands for each OS are on this page.

Is CVE-2015-9288 being exploited?

CVE-2015-9288 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-2015-9288 affect?

CVE-2015-9288 affects web player. Severity is medium (CVSS 6.5). The Unity Web Player plugin before 4.6.6f2 and 5.x before 5.0.3f2 allows attackers to read messages or access online services via a victim's credentials

How urgent is CVE-2015-9288?

Priority 37/100. No elevated risk signals yet.

Software pages

Unity vulnerabilities

Related CVEs

CVE-2014-2544 HIGH 7.5 UPGRADE UPGRADE Unspecified vulnerability in Spotfire Web Player Engine, Spotfire Desktop, and Spotfire Server Authentication
CVE-2014-10024 HIGH 7.5 MITIGATE MITIGATE Multiple integer signedness errors in DirectShowDemuxFilter, as used in Divx Web Player, Divx Player, and othe

References

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