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CVE-2020-3998

23
FAUCET Score

CVE-2020-3998 is an information disclosure vulnerability affecting VMware Horizon Client for Windows versions prior to 5.5.0. A local attacker with privileges on the client machine could potentially retrieve hashed credentials if the client application crashes. This vulnerability is rated Medium severity (CVSS 6.5) due to its potential for high confidentiality impact, though it requires local access and a client crash. There is currently no evidence of active exploitation, public exploit code, or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
>= 5.0.0, < 5.5.0CPE matchmatch criteria
cpe:2.3:a:vmware:horizon_client:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

6.5MEDIUM

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
NONE
Availability Impact
NONE
Exploitability Score
2.8
Impact Score
3.6
CvssVersion
3.1

Exploit Intelligence

EPSS Score
1.28%
Probability of exploitation in next 30 days
EPSS Percentile
67.1%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0128 is in the 81st percentile among its peer group of 21,958 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (1)

vmwarepatch availablevia nvd_reference
View patch

References

vmware.com / security/advisories/VMSA-2020-0024.html
PatchVendor Advisory