CVE-2021-30775

mediumpriority · track · 31EPSS 0.012 · 69 %ileEUUS

grimoire priorityP3 · Track

Exploitable?

—

no known exploitation

Likely / severe?

1.22% (69th) EPSS

CVSS 6.8 · medium

Is it mine?

11 products

Check your exposure

Who says so?

3 sources

cnnvd · enisa_euvd · nvd

EPSS · scored 2026-10-27

A memory corruption issue was addressed with improved state management. This issue is fixed in iOS 14.7, macOS Big Sur 11.5, watchOS 7.6, tvOS 14.7, Security Update 2021-004 Catalina. Processing a maliciously crafted audio file may lead to arbitrary code execution.

cvss

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

7.8

010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · medium–high · 6.8–7.8

v2.06.8mediumAV:N/AC:M/Au:N/C:P/I:P/A:Pprimary · NVD / NIST USexploitability 8.6 · impact 6.4

v3.17.8highCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:Hprimary · NVD / NIST USexploitability 1.8 · impact 5.9

v3.17.1highCVSS:3.1/AV:L/AC:L/PR:N/UI:R/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 (11)

Products and version ranges known to be affected.

Apple IOSunspecified → 14.7enisa_euvdEU
Apple Security Update - Catalinaunspecified → 2021enisa_euvdEU
Apple macOSunspecified → 11.5enisa_euvdEU
Apple macOSunspecified → 14.7enisa_euvdEU
Apple macOSunspecified → 7.6enisa_euvdEU
apple iphone os< 14.7nvdUScpe:2.3:o:apple:iphone_os:*:*:*:*:*:*:*:*
apple mac os x10.15 → 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 macos< 11.5nvdUScpe:2.3:o:apple:macos:*:*:*:*:*:*:*:*
apple tvos< 14.7nvdUScpe:2.3:o:apple:tvos:*:*:*:*:*:*:*:*
apple watchos< 7.6nvdUScpe:2.3:o:apple:watchos:*:*:*:*:*:*:*:*

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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Related entries.

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+16132 more

references (21)

External citations — patches, advisories, analysis.

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