CVE-2021-30795

highpriority · track · 36EPSS 0.022 · 83 %ileEURUUS

grimoire priorityP2 · Scheduled

Exploitable?

—

no known exploitation

Likely / severe?

2.22% (83rd) EPSS

CVSS 9.3 · high

Is it mine?

18 products

Check your exposure

Who says so?

4 sources

cnnvd · enisa_euvd · fstec_bdu · nvd

EPSS · scored 2026-10-27

A use after free issue was addressed with improved memory management. This issue is fixed in iOS 14.7, Safari 14.1.2, macOS Big Sur 11.5, watchOS 7.6, tvOS 14.7. Processing maliciously crafted web content may lead to arbitrary code execution.

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

v3.18.8highCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:Hprimary · NVD / NIST USexploitability 2.8 · impact 5.9

v3.18.8highAV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:Hsecondary · FSTEC (BDU) RU

v3.18.1highCVSS:3.1/AV:N/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-416USprimaryCWE-416US

affected products (18)

Products and version ranges known to be affected.

Apple IOSunspecified → 14.7enisa_euvdEU
Apple macOSunspecified → 11.5enisa_euvdEU
Apple macOSunspecified → 14.1enisa_euvdEU
Apple macOSunspecified → 14.7enisa_euvdEU
Apple macOSunspecified → 7.6enisa_euvdEU
АО «НППКТ» ОСОН ОСнова Оnyx≤ 2.1fstec_bduRU
ООО «РусБИТех-Астра» Astra Linux Special Edition≤ 1.7fstec_bduRU
ООО «РусБИТех-Астра» Astra Linux Special Edition≤ 4.7fstec_bduRU
Сообщество свободного программного обеспечения Debian GNU/Linux≤ 8fstec_bduRU
Сообщество свободного программного обеспечения Debian GNU/Linux≤ 10fstec_bduRU
Сообщество свободного программного обеспечения Debian GNU/Linux≤ 9fstec_bduRU
Сообщество свободного программного обеспечения WPE WebKit≤ 2.32.3fstec_bduRU
Сообщество свободного программного обеспечения WebKitGTK≤ 2.32.3fstec_bduRU
apple iphone os< 14.7nvdUScpe:2.3:o:apple:iphone_os:*:*:*:*:*:*:*:*
apple macos11.0 → 11.5nvdUScpe:2.3:o:apple:macos:*:*:*:*:*:*:*:*
apple safari< 14.1.2nvdUScpe:2.3:a:apple:safari:*:*:*:*:*:*:*:*
apple tvos< 14.7nvdUScpe:2.3:o:apple:tvos:*:*:*:*:*:*:*:*
apple watchos< 7.6nvdUScpe:2.3:o:apple:watchos:*:*:*:*:*:*:*:*

also known as (4)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd fstec_bdu nvd NVD CVE.org MITRE

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

related (12,251)

Related entries.

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+12246 more

references (33)

External citations — patches, advisories, analysis.

scry

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