CVE-2021-28702

Exploitation

Not assessed. CISA has not published an exploitation assessment for this record, and it is not in the KEV catalog. That is an absence of assessment, not a finding of no risk.

SSVC decision

Not assessed by CISA

EPSS probability

0.44% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 36.6% of scored records. A rank, not a probability.

NVD base score

7.6 (CVSS v3.x), scored by the NVD independently of the CNA.

NVD CVSS vector

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

NVD analysis status

Modified. NVD last modified this record on 2026-06-17.

Red Hat severity

No Red Hat rating. Red Hat rates the CVEs that affect its products.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

Published

2021-10-06 13:13Z4 YR AGO

Last updated

2024-08-03 21:47Z2 YR AGO

Reserved

2021-03-18

Assigning CNA

XEN

Record state

PUBLISHED

Severity

Not rated by the issuing CNA

CNA CVSS vector

Not published by the issuing CNA

Weaknesses

• CWE-269Improper Privilege ManagementClass

Data version

5.1

Document digest

f5a97413d8447de9493729fcf67340f27cf73e11e975f0e468749aebf3a607da

• xenbits.xenproject.orghttps://xenbits.xenproject.org/xsa/advisory-386.txtx_refsource_MISC
• www.openwall.com[oss-security] 20211007 Xen Security Advisory 386 v2 (CVE-2021-28702) - PCI devices with RMRRs not deassigned correctlyhttp://www.openwall.com/lists/oss-security/2021/10/07/2mailing-listx_refsource_MLIST
• lists.fedoraproject.orgFEDORA-2021-80bbe7def0https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/TRAWV6PO2KUGVZTESERECOBUBZ6X45I7/vendor-advisoryx_refsource_FEDORA
• lists.fedoraproject.orgFEDORA-2021-0b7a484688https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/FDPRMOBBLS74ONYP3IXZZXSTLKR7GRQB/vendor-advisoryx_refsource_FEDORA
• lists.fedoraproject.orgFEDORA-2021-829f5f2f43https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/2OIHEJ3R3EH5DYI2I5UMD2ULJ2ELA3EX/vendor-advisoryx_refsource_FEDORA
• www.debian.orgDSA-5017https://www.debian.org/security/2021/dsa-5017vendor-advisoryx_refsource_DEBIAN
• security.gentoo.orgGLSA-202208-23https://security.gentoo.org/glsa/202208-23vendor-advisoryx_refsource_GENTOO