CVE-2021-33038

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

1.86% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 77.4% 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:H/I:N/A:N

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

2021-05-26 13:51Z5 YR AGO

Last updated

2024-08-03 23:42Z2 YR AGO

Reserved

2021-05-17

Assigning CNA

mitre

Record state

PUBLISHED

Severity

Not rated by the issuing CNA

CNA CVSS vector

Not published by the issuing CNA

Weaknesses

• CWE-276Incorrect Default PermissionsBase

Data version

5.1

Document digest

3fe72b8f18e3510aeff8197b65db8c5d4ec683745c8bbafc4ca85c4a91024daa

• gitlab.comhttps://gitlab.com/mailman/hyperkitty/-/issues/380x_refsource_CONFIRM
• gitlab.comhttps://gitlab.com/mailman/hyperkitty/-/commit/9025324597d60b2dff740e49b70b15589d6804fax_refsource_CONFIRM
• www.debian.orgDSA-4922https://www.debian.org/security/2021/dsa-4922vendor-advisoryx_refsource_DEBIAN
• techblog.wikimedia.orghttps://techblog.wikimedia.org/2021/06/11/discovering-and-fixing-cve-2021-33038-in-mailman3/x_refsource_MISC