CVE-2021-30983

highpriority · act · 90OT risk · criticalKEV · exploitedEPSS 0.029 · 87 %ileDEEURUUS

grimoire priorityP0 · Act now

Exploitable?

Yes · in the wild

CISA KEV

Likely / severe?

2.92% (87th) EPSS

CVSS 9.3 · high

Is it mine?

11 products

Check your exposure

Who says so?

5 sources

cnnvd · enisa_euvd · fstec_bdu · cert_bund

added 2022-06-27remediate by 2022-07-18

required action Apply updates per vendor instructions.

EPSS · scored 2026-10-24

Apple iOS and iPadOS Buffer Overflow Vulnerability

A buffer overflow issue was addressed with improved memory handling. This issue is fixed in iOS 15.2 and iPadOS 15.2. An 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

v3.17.8highAV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:Hsecondary · FSTEC (BDU) RU

v3.17.8highCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:Hsecondary · ENISA EU

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

v3.17.8highCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:Hsecondary · CVSS-BT (t0sche)

ssvc

A stakeholder decision — act, attend, or track — from exploitation and impact.

Exploitation: active · Automatable: no · Technical Impact: totalcoordinatorcisa_ssvcUS

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-120USprimaryCWE-120US

affected products (11)

Products and version ranges known to be affected.

Apple iOS <15.2all versionscert_bundDE
Apple iPadall versionscert_bundDEcpe:/h:apple:ipad:-
Apple iPadOS <15.2all versionscert_bundDE
Apple iPhoneall versionscert_bundDEcpe:/h:apple:iphone:-
Apple IOS< 15.2cert_bundDE
Apple iPadOS< 15.2cert_bundDE
Apple iOS and iPadOSunspecified → 15.2enisa_euvdEU
Apple Inc. iOS≤ 15.2fstec_bduRU
Apple Inc. iPadOS≤ 15.2fstec_bduRU
apple ipados< 15.2nvdUScpe:2.3:o:apple:ipados:*:*:*:*:*:*:*:*
apple iphone os< 15.2nvdUScpe:2.3:o:apple:iphone_os:*:*:*:*:*:*:*:*

advisories (1)

Vendor and ecosystem advisories describing this.

WID-SEC-W-2022-0489Apple iOS: Mehrere SchwachstellenDeutsch2021-12-13csaf · cert_bundDE
Ein entfernter, anonymer, physischer oder lokaler Angreifer kann mehrere Schwachstellen in Apple iOS, Apple iPadOS, Apple iPhone und Apple iPad ausnutzen, um beliebigen Programmcode auszuführen, beliebigen Programmcode mit Kernel-Privilegien auszuführen, seine Privilegien zu erweitern, vertrauliche Informationen offenzulegen, einen Denial-of-Service-Zustand zu verursachen, Sicherheitsmaßnahmen zu umgehen und Dateien zu manipulieren.

also known as (3)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd fstec_bdu cert_bund nvd NVD CVE.org MITRE

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

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Related entries.

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+5654 more

references (7)

External citations — patches, advisories, analysis.

scry

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