Predictive Vulnerability Intelligence.

Product

  • Product
  • Pricing
  • Documentation

Company

  • About
  • Partnerships
  • Blog
  • Support

Legal

  • Terms
  • Privacy
  • Data Licensing

© 2026 FAUCET Technologies LLC. All rights reserved.

CVE-2020-28368

18
FAUCET Score

CVE-2020-28368 describes a side-channel vulnerability in Xen through version 4.14.x, allowing guest OS administrators to extract sensitive information, such as AES keys, from outside the guest via power/energy monitoring interfaces. This "Platypus" attack affects various distributions including Debian and Fedora running Xen. With a CVSS score of 4.4 (Medium), the attack requires high privileges (PR:H) and local access (AV:L), but has high confidentiality impact (C:H) with no integrity or availability impact. There is no evidence of active exploitation, publicly available exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
<= 4.14.0CPE matchmatch criteria
cpe:2.3:o:xen:xen:*:*:*:*:*:*:*:*
32CPE matchmatch criteria
cpe:2.3:o:fedoraproject:fedora:32:*:*:*:*:*:*:*
10.0CPE matchmatch criteria
cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

4.4MEDIUM

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

Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
HIGH
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
NONE
Availability Impact
NONE
Exploitability Score
0.8
Impact Score
3.6
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.39%
Probability of exploitation in next 30 days
EPSS Percentile
32.0%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0039 is in the 81st percentile among its peer group of 3,720 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.0 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 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Vendor Advisories (1)

redhatCVE-2020-28368Moderate

xen: information leak via power sidechannel

Nov 10, 2020

References

lists.fedoraproject.org / archives/list/package-announce%40lists.fedoraproject.org/message/5J66QUUHXH2RR4CNCKQRGVXVSOUFRPDA
lists.fedoraproject.org / archives/list/package-announce%40lists.fedoraproject.org/message/XV23EZIMNLJN4YXRRXLQV2ALW6ZEALXV
platypusattack.com
Third Party Advisory
debian.org / security/2020/dsa-4804
Mailing ListThird Party Advisory
zdnet.com / article/new-platypus-attack-can-steal-data-from-intel-cpus
Third Party Advisory
xenbits.xen.org / xsa/advisory-351.html
PatchVendor Advisory
openwall.com / lists/oss-security/2020/11/26/1
Mailing ListThird Party Advisory
xenbits.xen.org / xsa/advisory-351.html
Vendor Advisory