CVE-2021-28994

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

2.04% probability of exploitation activity in the next 30 days.

EPSS percentile

Equal to or higher than the score of 81.0% of scored records. A rank, not a probability.

NVD base score

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

NVD CVSS vector

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

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

2021-03-31 22:11Z5 YR AGO

Last updated

2024-08-03 21:55Z2 YR AGO

Reserved

2021-03-22

Assigning CNA

mitre

Record state

PUBLISHED

Severity

Not rated by the issuing CNA

CNA CVSS vector

Not published by the issuing CNA

Weaknesses

• CWE-770Allocation of Resources Without Limits or ThrottlingBase

Data version

5.1

Document digest

7422b56e2e51827b04b859fb12a3d54fbe254ebe9622847cb5adf130e1a0ffb4

• www.openwall.comhttps://www.openwall.com/lists/oss-security/2021/03/19/6x_refsource_MISC
• www.openwall.com[oss-security] 20210401 Re: kopano-core 11.0.1: Remote DoS by memory exhaustionhttp://www.openwall.com/lists/oss-security/2021/04/01/1mailing-listx_refsource_MLIST
• www.openwall.com[oss-security] 20210425 Re: kopano-core 11.0.1.77: Remote DoS with out-of-bounds accesshttp://www.openwall.com/lists/oss-security/2021/04/25/1mailing-listx_refsource_MLIST