CVE-2021-33643

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.
• AutomatableyesAn attacker can reliably automate reconnaissance through exploitation, so this scales.
• 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

1.87% probability of exploitation activity in the next 30 days.

EPSS percentile

Equal to or higher than the score of 79.2% of scored records. A rank, not a probability.

NVD base score

9.1 (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:H/I:N/A:H

NVD analysis status

Modified. NVD last modified this record on 2026-06-23.

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

2022-08-09 00:00Z4 YR AGO

Last updated

2026-06-23 14:42Z4 MO AGO

Reserved

2021-05-28

Assigning CNA

openEuler

Record state

PUBLISHED

Severity

Medium (CVSS 6.5)

CNA CVSS vector

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

Weaknesses

• CWE-125Out-of-bounds ReadBase

Data version

5.2

Document digest

b265c89788f80a0d812323d343ae05660b41565d4e7abdd6f532ddfd604cf62e

• www.openeuler.orghttps://www.openeuler.org/en/security/safety-bulletin/detail.html?id=openEuler-SA-2022-1807
• lists.fedoraproject.orgFEDORA-2022-fe1a4e3cf0https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/5YSHZY753R7XW6CIKJVAWI373WW3YRRJ/vendor-advisory
• lists.fedoraproject.orgFEDORA-2022-50e8a1b51dhttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/OD4HEBSTI22FNYKOKK7W3X6ZQE6FV3XC/vendor-advisory
• lists.fedoraproject.orgFEDORA-2022-44a20bba43https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/7Q26QDNOJDOFYWMJWEIK5XR62M2FF6IJ/vendor-advisory
• lists.fedoraproject.orgFEDORA-2022-88772d0a2dhttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/4S4PJRCJLEAWN2EKXGLSOBTL7O57V7NC/vendor-advisory
• lists.fedoraproject.orgFEDORA-2022-ccc68b06cchttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/7WX5YE66CT7Y5C2HTHXSFDKQWYWYWJ2T/vendor-advisory
• lists.debian.orghttps://lists.debian.org/debian-lts-announce/2025/01/msg00026.html