CVE-2021-30159

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

1.51% probability of exploitation activity in the next 30 days.

EPSS percentile

Equal to or higher than the score of 74.3% of scored records. A rank, not a probability.

NVD base score

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

NVD CVSS vector

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

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

2021-04-09 06:12Z5 YR AGO

Last updated

2024-08-03 22:24Z2 YR AGO

Reserved

2021-04-06

Assigning CNA

mitre

Record state

PUBLISHED

Severity

Not rated by the issuing CNA

CNA CVSS vector

Not published by the issuing CNA

Weaknesses

• CWE-863Incorrect AuthorizationClass

Data version

5.1

Document digest

0dc04ea969ef61fc2ff268e808cf30bd98234908c1cf6892a37e52effa46762c

• phabricator.wikimedia.orghttps://phabricator.wikimedia.org/T272386x_refsource_MISC
• www.debian.orgDSA-4889https://www.debian.org/security/2021/dsa-4889vendor-advisoryx_refsource_DEBIAN
• lists.fedoraproject.orgFEDORA-2021-f4223b6684https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/26UJGHF7LJDOCQN6A3Z4PM7PYRKENJHE/vendor-advisoryx_refsource_FEDORA
• lists.fedoraproject.orgFEDORA-2021-d298103d3ahttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/2OMSV7B2TCFBOCICN3B4SMQP5HVRJQIT/vendor-advisoryx_refsource_FEDORA
• lists.debian.org[debian-lts-announce] 20210505 [SECURITY] [DLA 2648-1] mediawiki security updatehttps://lists.debian.org/debian-lts-announce/2021/05/msg00003.htmlmailing-listx_refsource_MLIST
• lists.debian.org[debian-lts-announce] 20210506 [SECURITY] [DLA 2648-2] mediawiki regression updatehttps://lists.debian.org/debian-lts-announce/2021/05/msg00006.htmlmailing-listx_refsource_MLIST
• security.gentoo.orgGLSA-202107-40https://security.gentoo.org/glsa/202107-40vendor-advisoryx_refsource_GENTOO