No exploitation reportedFix available

CVE-2019-5521

Q: Is CVE-2019-5521 actively exploited?

Active exploitation of CVE-2019-5521 has not been confirmed. Its EPSS score was 1.6% on 2026-10-23, the estimated probability of exploitation in the next 30 days.

Q: What is the CVSS score for CVE-2019-5521?

CVE-2019-5521 has a CVSS v3 base score of 9.6 (CRITICAL severity), with vector string CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:H.

No exploitation reported by the sources we read.

Published2019-09-20
WeaknessCWE-125

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

Description

VMware ESXi (6.7 before ESXi670-201904101-SG and 6.5 before ESXi650-201903001), Workstation (15.x before 15.0.3 and 14.x before 14.1.6) and Fusion (11.x before 11.0.3 and 10.x before 10.1.6) contain an out-of-bounds read vulnerability in the pixel shader functionality. Successful exploitation of this issue may lead to information disclosure or may allow attackers with normal user privileges to create a denial-of-service condition on the host. Exploitation of this issue require an attacker to have access to a virtual machine with 3D graphics enabled. It is not enabled by default on ESXi and is enabled by default on Workstation and Fusion.

Timeline

dates in UTC

2019-09-2018:15CVE publishedNVD

Observed activity

isMalicious corpus · updated 2026-10-23 21:37 UTC

Indicators tagged with this CVE, per day0 indicators over 7 days

Block these indicators

Firewall list (EDL, text): https://api.ismalicious.com/edl/cve/CVE-2019-5521?format=txt
CSV export: https://api.ismalicious.com/edl/cve/CVE-2019-5521?format=csv
TAXII collection of exploited CVEs
The EDL and CSV take an API key on the Pro plan.

Versions per branch

NVD

Vmware esxi

Branch	Affected	Fixed in	Source
6.5	= 6.5	no fix published	NVD
6.7	= 6.7	no fix published	NVD

Vmware fusion

Branch	Affected	Fixed in	Source
11.0	≥ 11.0.0, < 11.0.3	11.0.3	NVD
10.x	≥ 10.0.0, < 10.1.6	10.1.6	NVD

Vmware workstation

Branch	Affected	Fixed in	Source
15.0	≥ 15.0.0, < 15.0.3	15.0.3	NVD
14.x	≥ 14.0.0, < 14.1.6	14.1.6	NVD

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Fix

Advisories and patches

www.vmware.comVendor Advisory

Detection

Nuclei template: none so far
Exploit-DB: no entry
Proof-of-concept repositories: none listed

Sources

NVDCVSS 3.19.6read 2026-10-23
NVDCVSS 2.05.5read 2026-10-23
NVDweakness (CWE)CWE-125read 2026-10-23
FIRST EPSSEPSS score1.6 %2026-10-23

Technical details

CVSS v3 Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:H
Published: 2019-09-20
Last Modified: 2026-06-17
NVD status: Modified

Frequently asked questions

What is CVE-2019-5521?

Is CVE-2019-5521 actively exploited?

Active exploitation of CVE-2019-5521 has not been confirmed. Its EPSS score was 1.6% on 2026-10-23, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2019-5521?

CVE-2019-5521 has a CVSS v3 base score of 9.6 (CRITICAL severity), with vector string CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:H.

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