CVE-2021-1844

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

2.37% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 82.3% of scored records. A rank, not a probability.

NVD base score

8.8 (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:H/I:H/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

2021-04-02 18:07Z5 YR AGO

Last updated

2024-08-03 16:25Z2 YR AGO

Reserved

2020-12-08

Assigning CNA

apple

Record state

PUBLISHED

Severity

Not rated by the issuing CNA

CNA CVSS vector

Not published by the issuing CNA

Weaknesses

• CWE-787Out-of-bounds WriteBase
• CWE-119Improper Restriction of Operations within the Bounds of a Memory BufferClass

Data version

5.1

Document digest

157b358ca87317a837bf62ec7768cf23006b4cdb533ae7b675ffff8d10a5f905

• support.apple.comhttps://support.apple.com/en-us/HT212220x_refsource_MISC
• support.apple.comhttps://support.apple.com/en-us/HT212221x_refsource_MISC
• support.apple.comhttps://support.apple.com/en-us/HT212222x_refsource_MISC
• support.apple.comhttps://support.apple.com/en-us/HT212223x_refsource_MISC
• lists.fedoraproject.orgFEDORA-2021-864dc37032https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/L3L6ZZOU5JS7E3RFYGLP7UFLXCG7TNLU/vendor-advisoryx_refsource_FEDORA
• support.apple.comhttps://support.apple.com/kb/HT212323x_refsource_CONFIRM
• seclists.org20210427 APPLE-SA-2021-04-26-6 tvOS 14.5http://seclists.org/fulldisclosure/2021/Apr/55mailing-listx_refsource_FULLDISC
• www.debian.orgDSA-4923https://www.debian.org/security/2021/dsa-4923vendor-advisoryx_refsource_DEBIAN