CVE-2021-30805

highpriority · track · 40EPSS 0.031 · 88 %ileEUUS

grimoire priorityP2 · Scheduled

Exploitable?

—

no known exploitation

Likely / severe?

3.15% (88th) EPSS

CVSS 10 · high

Is it mine?

9 products

Check your exposure

Who says so?

3 sources

cnnvd · enisa_euvd · nvd

EPSS · scored 2026-10-28

A memory corruption issue was addressed with improved input validation. This issue is fixed in macOS Big Sur 11.5, Security Update 2021-004 Catalina, Security Update 2021-005 Mojave. An application may be able to execute arbitrary code with kernel privileges.

cvss

Technical severity, 0–10. One row per scoring source.

10.0

010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · high–critical · 9–10

v2.010highAV:N/AC:L/Au:N/C:C/I:C/A:Cprimary · NVD / NIST USexploitability 10 · impact 10

v3.19.8criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:Hprimary · NVD / NIST USexploitability 3.9 · impact 5.9

v3.19criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:Usecondary · CVSS-BT (t0sche)

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-787USprimary

affected products (9)

Products and version ranges known to be affected.

Apple Security Update - Catalinaunspecified → 2021enisa_euvdEU
Apple macOSunspecified → 11.5enisa_euvdEU
Apple macOSunspecified → 2021enisa_euvdEU
apple mac os x10.14 → 10.14.6nvdUScpe:2.3:o:apple:mac_os_x:*:*:*:*:*:*:*:*
apple mac os x= 10.14.6nvdUScpe:2.3:o:apple:mac_os_x:*:*:*:*:*:*:*:*
apple mac os x10.15 → 10.15.7nvdUScpe:2.3:o:apple:mac_os_x:*:*:*:*:*:*:*:*
apple mac os x= 10.15.6nvdUScpe:2.3:o:apple:mac_os_x:*:*:*:*:*:*:*:*
apple mac os x= 10.15.7nvdUScpe:2.3:o:apple:mac_os_x:*:*:*:*:*:*:*:*
apple macos11.0 → 11.5nvdUScpe:2.3:o:apple:macos:*:*:*:*:*:*:*:*

also known as (3)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd nvd NVD CVE.org MITRE

published 2021-09-08modified 2026-06-17

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+16132 more

references (16)

External citations — patches, advisories, analysis.

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