CVE-2021-30983 (GCVE-0-2021-30983)

Vulnerability from cvelistv5 – Published: 2021-08-24 18:51 – Updated: 2025-10-21 23:25
VLAI? CISA KEV
Summary
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.
Severity ?
7.8 (High)
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
CWE
  • An application may be able to execute arbitrary code with kernel privileges
Assigner
References
Impacted products
Vendor Product Version
Apple iOS and iPadOS Affected: unspecified , < 15.2 (custom)
Create a notification for this product.
CISA KEV
Known Exploited Vulnerability - GCVE BCP-07 Compliant
KEV entry ID: 24a9eee0-8a2a-4b95-a3f7-e7c4a8a11363

Vulnerability ID: CVE-2021-30983

Status: Confirmed

Status Updated: 2022-06-27 00:00 UTC

Exploited: Yes

Timestamps
First Seen: 2022-06-27
Asserted: 2022-06-27
Scope
Notes: KEV entry: Apple iOS and iPadOS Buffer Overflow Vulnerability | Affected: Apple / iOS and iPadOS | Description: Apple iOS and iPadOS contain a buffer overflow vulnerability that could allow an application to execute code with kernel privileges. | Required action: Apply updates per vendor instructions. | Due date: 2022-07-18 | Known ransomware campaign use (KEV): Unknown | Notes (KEV): https://nvd.nist.gov/vuln/detail/CVE-2021-30983
Evidence

Type: Vendor Report

Signal: Successful Exploitation

Confidence: 80%

Source: cisa-kev

Details
Cwes CWE-119
Feed CISA Known Exploited Vulnerabilities Catalog
Product iOS and iPadOS
Due Date 2022-07-18
Date Added 2022-06-27
Vendorproject Apple
Vulnerabilityname Apple iOS and iPadOS Buffer Overflow Vulnerability
Knownransomwarecampaignuse Unknown
References
Created: 2026-02-02 12:27 UTC | Updated: 2026-02-02 12:27 UTC
Show details on NVD website
To clipboard 

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Sightings

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Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



Detection rules are retrieved from Rulezet.