CVE-2021-30916

highpriority · track · 32EPSS 0.016 · 75 %ileDEEUUS

grimoire priorityP2 · Scheduled

Exploitable?

—

no known exploitation

Likely / severe?

1.56% (75th) EPSS

CVSS 9.3 · high

Is it mine?

15 products

Check your exposure

Who says so?

4 sources

cnnvd · enisa_euvd · nvd · cert_bund

EPSS · scored 2026-10-27

A memory corruption issue was addressed with improved memory handling. This issue is fixed in iOS 15.1 and iPadOS 15.1, macOS Monterey 12.0.1, iOS 14.8.1 and iPadOS 14.8.1, Security Update 2021-007 Catalina, macOS Big Sur 11.6.1. A malicious application may be able to execute arbitrary code with kernel privileges.

cvss

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

9.3

010

base score 0–10 · higher = more severe · hover a vector to decode

v2.09.3highAV:N/AC:M/Au:N/C:C/I:C/A:Cprimary · NVD / NIST USexploitability 8.6 · impact 10

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 (15)

Products and version ranges known to be affected.

Apple iOS and iPadOSunspecified → 14.8enisa_euvdEU
Apple iOS and iPadOSunspecified → 15.1enisa_euvdEU
Apple macOSunspecified → 11.6enisa_euvdEU
Apple macOSunspecified → 12.0enisa_euvdEU
Apple macOSunspecified → 2021enisa_euvdEU
apple ipad os< 14.8.1nvdUScpe:2.3:o:apple:ipad_os:*:*:*:*:*:*:*:*
apple ipados= 15.0nvdUScpe:2.3:o:apple:ipados:*:*:*:*:*:*:*:*
apple iphone os< 14.8.1nvdUScpe:2.3:o:apple:iphone_os:*:*:*:*:*:*:*:*
apple iphone os= 15.0nvdUScpe:2.3:o:apple:iphone_os:*:*:*:*:*:*:*:*
apple mac os x< 10.15.7nvdUScpe:2.3:o:apple:mac_os_x:*:*:*:*:*:*:*:*
apple mac os x= 10.15.7nvdUScpe:2.3:o:apple:mac_os_x:*:*:*:*:*:*:*:*
apple macos11.0 → 11.6.1nvdUScpe:2.3:o:apple:macos:*:*:*:*:*:*:*:*
apple macos= 12.0nvdUScpe:2.3:o:apple:macos:*:*:*:*:*:*:*:*
apple tvos< 15.2nvdUScpe:2.3:o:apple:tvos:*:*:*:*:*:*:*:*
apple watchos< 8.3nvdUScpe:2.3:o:apple:watchos:*:*:*:*:*:*:*:*

advisories (1)

Vendor and ecosystem advisories describing this.

WID-SEC-W-2023-0804Apple iOS und iPadOS: Mehrere SchwachstellenDeutsch2021-10-26csaf · cert_bundDE
Ein entfernter, anonymer oder lokaler Angreifer kann mehrere Schwachstellen in Apple iPadOS und Apple iOS ausnutzen, um beliebigen Programmcode auszuführen, seine Rechte zu erweitern, Informationen offenzulegen, einen Denial of Service Zustand herbeizuführen, Sicherheitsvorkehrungen zu umgehen oder sonstige Auswirkungen zu verursachen.

also known as (2)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd nvd cert_bund NVD CVE.org MITRE

published 2021-08-24modified 2026-06-17

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Related entries.

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+16120 more

references (38)

External citations — patches, advisories, analysis.

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