CVE-2021-41973

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

4.63% probability of exploitation activity in the next 30 days.

EPSS percentile

Equal to or higher than the score of 91.2% of scored records. A rank, not a probability.

NVD base score

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

NVD CVSS vector

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

2021-11-01 08:35Z4 YR AGO

Last updated

2024-08-04 03:22Z2 YR AGO

Reserved

2021-10-04

Assigning CNA

apache

Record state

PUBLISHED

Severity

Not rated by the issuing CNA

CNA CVSS vector

Not published by the issuing CNA

Weaknesses

• CWE-835Loop with Unreachable Exit Condition ('Infinite Loop')Base

Data version

5.1

Document digest

c477ff051b5535046c3e505ad7c29828c4fb0d9a07598cc2b09496b5945bf633

• lists.apache.orghttps://lists.apache.org/thread.html/r0b907da9340d5ff4e6c1a4798ef4e79700a668657f27cca8a39e9250%40%3Cdev.mina.apache.org%3Ex_refsource_MISC
• www.openwall.com[oss-security] 20211101 [ANNOUNCE] Apache MINA 2.0.22 & 2.1.5 releasedhttp://www.openwall.com/lists/oss-security/2021/11/01/2mailing-listx_refsource_MLIST
• www.openwall.com[oss-security] 20211101 CVE-2021-41973: Apache MINA HTTP listener DOShttp://www.openwall.com/lists/oss-security/2021/11/01/8mailing-listx_refsource_MLIST
• www.oracle.comhttps://www.oracle.com/security-alerts/cpuapr2022.htmlx_refsource_MISC