CVE-2021-4040

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

3.10% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 86.8% of scored records. A rank, not a probability.

NVD base score

5.3 (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:L

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

2022-08-24 15:13Z4 YR AGO

Last updated

2024-08-03 17:16Z2 YR AGO

Reserved

2021-12-02

Assigning CNA

redhat

Record state

PUBLISHED

Severity

Not rated by the issuing CNA

CNA CVSS vector

Not published by the issuing CNA

Weaknesses

• CWE-400Uncontrolled Resource ConsumptionClass
• CWE-787Out-of-bounds WriteBase

Data version

5.1

Document digest

60701c65056954e68dfd03fa4ec3b0b81f9401e4caa0005351080adcb8e920cd

• bugzilla.redhat.comhttps://bugzilla.redhat.com/show_bug.cgi?id=2028254x_refsource_MISC
• access.redhat.comhttps://access.redhat.com/security/cve/CVE-2021-4040x_refsource_MISC
• issues.apache.orghttps://issues.apache.org/jira/browse/ARTEMIS-3593x_refsource_MISC
• github.comhttps://github.com/apache/activemq-artemis/pull/3871/commitsx_refsource_MISC