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CVE-2013-3519: lgtosync.sys in VMware Workstation 9.x before 9.0.3, VMware Player 5.x before 5.0.3, VMware Fusion 5.x before

38
Routine
HIGH 7.9MITIGATEDOWNGRADEMITIGATE

CVE-2013-3519 is a high-severity flaw (CVSS 7.9) affecting esxi, workstation, esx. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

lgtosync.sys in VMware Workstation 9.x before 9.0.3, VMware Player 5.x before 5.0.3, VMware Fusion 5.x before 5.0.4, VMware ESXi 4.0 through 5.1, and VMware ESX 4.0 and 4.1, when a 32-bit Windows guest OS is used, allows guest OS users to gain guest OS privileges via an application that performs a crafted memory allocation.

Why this priority

  • High severity

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

Risk facts

CVSS score7.9 (High)
EPSS exploit chance0.5% (top 57%)
CISA exploited listNo
WeaknessCWE-264
Published2013-12-04
Last modified2026-06-16
Publisher (CNA): MITRE · Vendor: vmware

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Last updated 2026-06-16 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

vmware esxi MITIGATE
Affected: 4.0 · 4.1 · 5.0 · 5.1
Fixed in: no fixed release known
Safe to downgrade to: a release before 4.0
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.
vmware workstation DOWNGRADE
Affected: 9.0 · 9.0.1 · 9.0.2
Fixed in: no fixed release known
Safe to downgrade to: a release before 9.0
1. Check installed version
apt-cache policy workstation || rpm -q workstation || workstation --version
2. No fixed release: DOWNGRADE to a release before 9.0 (Debian / Ubuntu)
apt-cache madison workstation sudo apt install workstation=<VERSION_BEFORE_9.0> sudo apt-mark hold workstation
2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)
dnf --showduplicates list workstation sudo dnf downgrade workstation-<VERSION_BEFORE_9.0> sudo dnf versionlock add workstation
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.
vmware esx MITIGATE
Affected: 4.0 · 4.1
Fixed in: no fixed release known
Safe to downgrade to: a release before 4.0
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.
vmware player DOWNGRADE
Affected: 5.0 · 5.0.1 · 5.0.2
Fixed in: no fixed release known
Safe to downgrade to: a release before 5.0
1. Check installed version
apt-cache policy player || rpm -q player || player --version
2. No fixed release: DOWNGRADE to a release before 5.0 (Debian / Ubuntu)
apt-cache madison player sudo apt install player=<VERSION_BEFORE_5.0> sudo apt-mark hold player
2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)
dnf --showduplicates list player sudo dnf downgrade player-<VERSION_BEFORE_5.0> sudo dnf versionlock add 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.
vmware fusion DOWNGRADE
Affected: 5.0 · 5.0.1 · 5.0.2 · 5.0.3
Fixed in: no fixed release known
Safe to downgrade to: a release before 5.0
1. Check installed version
apt-cache policy fusion || rpm -q fusion || fusion --version
2. No fixed release: DOWNGRADE to a release before 5.0 (Debian / Ubuntu)
apt-cache madison fusion sudo apt install fusion=<VERSION_BEFORE_5.0> sudo apt-mark hold fusion
2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)
dnf --showduplicates list fusion sudo dnf downgrade fusion-<VERSION_BEFORE_5.0> sudo dnf versionlock add fusion
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-2013-3519?

esxi: mitigate or apply the listed mitigation; workstation: downgrade or apply the listed mitigation; esx: mitigate or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2013-3519 being exploited?

CVE-2013-3519 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-2013-3519 affect?

CVE-2013-3519 affects esxi, workstation, esx. Severity is high (CVSS 7.9). lgtosync.sys in VMware Workstation 9.x before 9.0.3, VMware Player 5.x before 5.0.3, VMware Fusion 5.x before 5.0.4, VMware ESXi 4.0 through 5.1, and VMware ESX 4.0 and 4.1, when a 32-bit Windows guest OS is used, allows guest OS users to g

How urgent is CVE-2013-3519?

Priority 38/100. High severity

Software pages

Windows vulnerabilities · VMware vulnerabilities

Related CVEs

References

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