CVE-2021-28089

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

1.67% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 74.7% 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

2021-03-19 04:18Z5 YR AGO

Last updated

2024-08-03 21:33Z2 YR AGO

Reserved

2021-03-08

Assigning CNA

mitre

Record state

PUBLISHED

Severity

Not rated by the issuing CNA

CNA CVSS vector

Not published by the issuing CNA

Weaknesses

• CWE-400Uncontrolled Resource ConsumptionClass

Data version

5.1

Document digest

751ca8ca7ac53931f44352d42826489669f6c340661c604495af5df80d902179

• gitlab.torproject.orghttps://gitlab.torproject.org/tpo/core/tor/-/issues/40304x_refsource_MISC
• blog.torproject.orghttps://blog.torproject.org/node/2009x_refsource_CONFIRM
• lists.fedoraproject.orgFEDORA-2021-e68317166dhttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/HPDXB2GZHG3VNOTWSXQ3QZVHNV76WCU5/vendor-advisoryx_refsource_FEDORA
• security.gentoo.orgGLSA-202107-25https://security.gentoo.org/glsa/202107-25vendor-advisoryx_refsource_GENTOO