CVE-2021-3929

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

0.67% probability of exploitation activity in the next 30 days.

EPSS percentile

Equal to or higher than the score of 52.0% of scored records. A rank, not a probability.

NVD base score

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

NVD CVSS vector

CVSS:3.1/AV:L/AC:L/PR:H/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

Moderate. Red Hat's rating for its own products, not a CVSS rating.

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

2022-08-25 19:36Z4 YR AGO

Last updated

2025-02-28 13:07Z1 YR AGO

Reserved

2021-11-05

Assigning CNA

redhat

Record state

PUBLISHED

Severity

Not rated by the issuing CNA

CNA CVSS vector

Not published by the issuing CNA

Weaknesses

• CWE-416Use After FreeVariant

Data version

5.1

Document digest

e8c306164bde0cf604b60901edc82fa387221e46f930c71fda48e305349248bf

• gitlab.comhttps://gitlab.com/qemu-project/qemu/-/issues/556x_refsource_MISC
• bugzilla.redhat.comhttps://bugzilla.redhat.com/show_bug.cgi?id=2020298x_refsource_MISC
• access.redhat.comhttps://access.redhat.com/security/cve/CVE-2021-3929x_refsource_MISC
• gitlab.comhttps://gitlab.com/qemu-project/qemu/-/issues/782x_refsource_MISC
• gitlab.comhttps://gitlab.com/qemu-project/qemu/-/commit/736b01642d85be832385x_refsource_MISC
• lists.fedoraproject.orgFEDORA-2022-f0a2695054https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/XHNN7QJCEQH7AQG5AQP2GEFAQE6K635I/vendor-advisoryx_refsource_FEDORA
• security.netapp.comhttps://security.netapp.com/advisory/ntap-20250228-0010/