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CVE-2020-28368Xen through 4.14.x allows guest OS administrators to obtain sensitive information (such as AES keys from outside the guest) via a…
- 4.4MediumCVSS base score
- 0.40%Exploitation in 30 daysEPSS · top 65% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
Description
Xen through 4.14.x allows guest OS administrators to obtain sensitive information (such as AES keys from outside the guest) via a side-channel attack on a power/energy monitoring interface, aka a "Platypus" attack. NOTE: there is only one logically independent fix: to change the access control for each such interface in Xen.
Timeline
ID reserved
By mitre
- 1 day later
· 1 day later
Published
- 4 years later
· 4 years later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| NVDNVD · Modified | 3.1 | Medium4.4 | CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N |
- EPSS (exploitation in 30 days)
- 0.40% · top 65% of all CVEs (14 Nov 2026)
Loading the EPSS history…
The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 4.4.
Affected products
n/a
- affected n/a
References
References8
- https://xenbits.xen.org/xsa/advisory-351.html (opens in a new tab)x_refsource_MISCx_transferred
- https://platypusattack.com (opens in a new tab)x_refsource_MISCx_transferred
- https://www.zdnet.com/article/new-platypus-attack-can-steal-data-from-intel-cpus/ (opens in a new tab)x_refsource_MISCx_transferred
- http://xenbits.xen.org/xsa/advisory-351.html (opens in a new tab)x_refsource_CONFIRMx_transferred
- FEDORA-2020-2684e0fadd (opens in a new tab)vendor-advisoryx_refsource_FEDORAx_transferred
- [oss-security] 20201126 Xen Security Advisory 351 v2 (CVE-2020-28368) - Information leak via power sidechannel (opens in a new tab)mailing-listx_refsource_MLISTx_transferred
- FEDORA-2020-d71fa5f0b9 (opens in a new tab)vendor-advisoryx_refsource_FEDORAx_transferred
- DSA-4804 (opens in a new tab)vendor-advisoryx_refsource_DEBIANx_transferred
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2020-20827 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
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[](https://cveledger.app/cve/CVE-2020-28368)Record last updated .