CVE-2021-27923

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

3.04% probability of exploitation activity in the next 30 days.

EPSS percentile

Equal to or higher than the score of 87.4% 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: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

2021-03-03 08:41Z5 YR AGO

Last updated

2025-08-15 04:40Z1 YR AGO

Reserved

2021-03-03

Assigning CNA

mitre

Record state

PUBLISHED

Severity

Not rated by the issuing CNA

CNA CVSS vector

Not published by the issuing CNA

Weaknesses

• CWE-20Improper Input ValidationClass
• CWE-1284Improper Validation of Specified Quantity in InputBase

Data version

5.1

Document digest

3050158ad99c9488edabcf1676bfc201843aaac20a5e7a40e578ef455096d2a0

• lists.fedoraproject.orgFEDORA-2021-0ece308612https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/ZTSY25UJU7NJUFHH3HWT575LT4TDFWBZ/vendor-advisory
• lists.fedoraproject.orgFEDORA-2021-15845d3abehttps://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/TQQY6472RX4J2SUJENWDZAWKTJJGP2ML/vendor-advisory
• lists.fedoraproject.orgFEDORA-2021-9016a9b7bdhttps://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/S7G44Z33J4BNI2DPDROHWGVG2U7ZH5JU/vendor-advisory
• security.gentoo.orgGLSA-202107-33https://security.gentoo.org/glsa/202107-33vendor-advisory
• pillow.readthedocs.iohttps://pillow.readthedocs.io/en/stable/releasenotes/8.1.2.html
• pillow.readthedocs.iohttps://pillow.readthedocs.io/en/stable/releasenotes/8.1.1.htmlx_refsource_MISC
• lists.fedoraproject.orgFEDORA-2021-0ece308612https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZTSY25UJU7NJUFHH3HWT575LT4TDFWBZ/vendor-advisoryx_refsource_FEDORA
• lists.fedoraproject.orgFEDORA-2021-15845d3abehttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/TQQY6472RX4J2SUJENWDZAWKTJJGP2ML/vendor-advisoryx_refsource_FEDORA
• lists.fedoraproject.orgFEDORA-2021-9016a9b7bdhttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/S7G44Z33J4BNI2DPDROHWGVG2U7ZH5JU/vendor-advisoryx_refsource_FEDORA