CVE-2021-30919

mediumpriority · track · 32EPSS 0.016 · 75 %ileDEEUUS

grimoire priorityP3 · Track

Exploitable?

—

no known exploitation

Likely / severe?

1.57% (75th) EPSS

CVSS 6.8 · medium

Is it mine?

17 products

Check your exposure

Who says so?

4 sources

cnnvd · enisa_euvd · nvd · cert_bund

EPSS · scored 2026-10-27

An out-of-bounds write was addressed with improved input validation. 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, tvOS 15.1, watchOS 8.1, Security Update 2021-007 Catalina, macOS Big Sur 11.6.1. Processing a maliciously crafted PDF 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 (17)

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 → 15.1enisa_euvdEU
Apple macOSunspecified → 2021enisa_euvdEU
Apple macOSunspecified → 8.1enisa_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< 15.1nvdUScpe:2.3:o:apple:tvos:*:*:*:*:*:*:*:*
apple watchos< 8.1nvdUScpe: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

related (16,124)

Related entries.

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+16119 more

references (30)

External citations — patches, advisories, analysis.

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