CVE-2021-2166

Exploitation

Assessed, none found. CISA's assessment recorded neither public exploit code nor evidence of exploitation when it was made.

SSVC decision

• ExploitationnoneCISA recorded no public exploit code and no evidence of exploitation.
• AutomatablenoAt least one step from reconnaissance to exploitation cannot be reliably automated.
• Technical ImpactpartialSuccessful exploitation gives limited control of the vulnerable component.

CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.

EPSS probability

4.64% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 90.9% of scored records. A rank, not a probability.

NVD base score

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

NVD CVSS vector

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

2021-04-22 21:53Z5 YR AGO

Last updated

2024-09-26 15:33Z1 YR AGO

Reserved

2020-12-09

Assigning CNA

oracle

Record state

PUBLISHED

Severity

Medium (CVSS 4.9)

CNA CVSS vector

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

Weaknesses

No CWE assigned

Data version

5.1

Document digest

7234b91b4563ce8358d252961264ae640096f6c41398240b87b4fdf830b1e617

• www.oracle.comhttps://www.oracle.com/security-alerts/cpuapr2021.htmlx_refsource_MISC
• lists.fedoraproject.orgFEDORA-2021-01189f6361https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/AKV7TRUEQW6EV45RSZVVFLVQMNHVHBCJ/vendor-advisoryx_refsource_FEDORA
• lists.fedoraproject.orgFEDORA-2021-5b6c69a73ahttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/UJVUTKKFQAWR7NURCQHQQ5JHTVYGEOYQ/vendor-advisoryx_refsource_FEDORA
• lists.fedoraproject.orgFEDORA-2021-b8b7829a83https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/JJQRPXNDH6YHQLUSCS5VA7DAW32PN7N7/vendor-advisoryx_refsource_FEDORA
• lists.fedoraproject.orgFEDORA-2021-68db93b130https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/DPA3CTGXPVWKHMCQDVURK4ETH7GE34KK/vendor-advisoryx_refsource_FEDORA
• security.netapp.comhttps://security.netapp.com/advisory/ntap-20210513-0002/x_refsource_CONFIRM
• lists.fedoraproject.orgFEDORA-2021-27187ac9ddhttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/GAU7KW36A6TQGKG3RUITYSVUFIHBY3OT/vendor-advisoryx_refsource_FEDORA
• lists.fedoraproject.orgFEDORA-2021-179f2fbb88https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/PEF5CRATUGQZUSQU63MHQIDZPOLHW2VE/vendor-advisoryx_refsource_FEDORA
• security.gentoo.orgGLSA-202105-27https://security.gentoo.org/glsa/202105-27vendor-advisoryx_refsource_GENTOO
• security.gentoo.orgGLSA-202105-28https://security.gentoo.org/glsa/202105-28vendor-advisoryx_refsource_GENTOO