CVE-2021-21334

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

1.94% probability of exploitation activity in the next 30 days.

EPSS percentile

Equal to or higher than the score of 80.0% of scored records. A rank, not a probability.

NVD base score

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

NVD CVSS vector

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

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

2021-03-10 21:30Z5 YR AGO

Last updated

2024-08-03 18:09Z2 YR AGO

Reserved

2020-12-22

Assigning CNA

GitHub_M

Record state

PUBLISHED

Severity

Medium (CVSS 6.3)

CNA CVSS vector

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

Weaknesses

• CWE-668Exposure of Resource to Wrong SphereClass
• CWE-200Exposure of Sensitive Information to an Unauthorized ActorClass

Data version

5.1

Document digest

32708d0f970ac81a90f75b8456bcc53fabcba32e1c7a5eb303028926548f91b6

• github.comhttps://github.com/containerd/containerd/security/advisories/GHSA-6g2q-w5j3-fwh4x_refsource_CONFIRM
• github.comhttps://github.com/containerd/containerd/releases/tag/v1.4.4x_refsource_MISC
• github.comhttps://github.com/containerd/containerd/releases/tag/v1.3.10x_refsource_MISC
• github.comhttps://github.com/containerd/containerd/commit/05f951a3781f4f2c1911b05e61c160e9c30eaa8ex_refsource_MISC
• lists.fedoraproject.orgFEDORA-2021-470fa24f5bhttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/KUE2Z2ZUWBHRU36ZGBD2YSJCYB6ELPXE/vendor-advisoryx_refsource_FEDORA
• lists.fedoraproject.orgFEDORA-2021-10ce8fcbf1https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/QIBPKSX5IOWPM3ZPFB3JVLXWDHSZTTWT/vendor-advisoryx_refsource_FEDORA
• lists.fedoraproject.orgFEDORA-2021-f049305892https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/VTXHA5JOWQRCCUZH7ZQBEYN6KZKJEYSD/vendor-advisoryx_refsource_FEDORA
• security.gentoo.orgGLSA-202105-33https://security.gentoo.org/glsa/202105-33vendor-advisoryx_refsource_GENTOO