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CVE-2021-30883 (GCVE-0-2021-30883)

Vulnerability from cvelistv5 – Published: 2021-08-24 18:49 – Updated: 2025-10-21 23:25
VLAI CISA Previdian
Summary
A memory corruption issue was addressed with improved memory handling. This issue is fixed in iOS 15.0.2 and iPadOS 15.0.2, macOS Monterey 12.0.1, iOS 14.8.1 and iPadOS 14.8.1, tvOS 15.1, watchOS 8.1, macOS Big Sur 11.6.1. An application may be able to execute arbitrary code with kernel privileges. Apple is aware of a report that this issue may have been actively exploited..
Severity
7.8 (High)
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
SSVC
Exploitation: active Automatable: no Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-01-29 17:29 UTC
CWE
  • An application may be able to execute arbitrary code with kernel privileges. Apple is aware of a report that this issue may have been actively exploited.
  • CWE-787 - Out-of-bounds Write
Assigner
References
Impacted products
Vendor Product Version CPE status
Apple iOS and iPadOS Affected: unspecified , < 15.0 (custom)
guessed Create a notification for this product.
Apple iOS and iPadOS Affected: unspecified , < 14.8 (custom)
guessed Create a notification for this product.
Apple macOS Affected: unspecified , < 12.0 (custom)
guessed Create a notification for this product.
Apple macOS Affected: unspecified , < 11.6 (custom)
guessed Create a notification for this product.
Apple macOS Affected: unspecified , < 8.1 (custom)
guessed Create a notification for this product.
Apple macOS Affected: unspecified , < 15.1 (custom)
guessed Create a notification for this product.
CISA
Known Exploited Vulnerability - GCVE BCP-07 Compliant
KEV entry ID: 95193073-8962-4a89-9d6f-9eabfda1e5b0

Vulnerability ID: CVE-2021-30883

Status: Confirmed

Status Updated: 2022-05-23 00:00 UTC

Exploited: Yes

Timestamps
First Seen: 2022-05-23
Asserted: 2022-05-23
Scope
Notes: KEV entry: Apple Multiple Products Memory Corruption Vulnerability | Affected: Apple / Multiple Products | Description: Apple iOS, macOS, watchOS, and tvOS contain a memory corruption vulnerability that could allow for remote code execution. | Required action: Apply updates per vendor instructions. | Due date: 2022-06-13 | Known ransomware campaign use (KEV): Unknown | Notes (KEV): https://nvd.nist.gov/vuln/detail/CVE-2021-30883
Evidence

Type: Vendor Report

Signal: Successful Exploitation

Confidence: 80%

Source: cisa-kev

Details
Cwes CWE-787
Feed CISA Known Exploited Vulnerabilities Catalog
Product Multiple Products
Due Date 2022-06-13
Date Added 2022-05-23
Vendorproject Apple
Vulnerabilityname Apple Multiple Products Memory Corruption Vulnerability
Knownransomwarecampaignuse Unknown
References
Created: 2026-02-02 12:27 UTC | Updated: 2026-02-06 07:17 UTC
Previdian
Known Exploited Vulnerability - GCVE BCP-07 Compliant
KEV entry ID: af526e1f-dc86-4f83-b3c5-4e16ea035762

Vulnerability ID: CVE-2021-30883

Status: Confirmed

Status Updated: 2022-05-23 00:00 UTC

Exploited: Yes

Timestamps
First Seen: 2022-05-23
Asserted: 2022-05-23
Scope
Notes: KEVIntel entry: A memory corruption issue was addressed with improved memory handling. This issue is fixed in iOS 15.0.2 and iPadOS 15.0.2, macOS Monterey 12.0.1,... | Affected: Apple / iOS and iPadOS, macOS | CVSS: 7.8 (HIGH) | Used in malware: unknown | Not yet in CISA KEV: False
Evidence

Type: Public Report

Signal: Successful Exploitation

Confidence: 70%

Source: kevintel

Details
Feed KEVIntel (kevintel.com)
Title A memory corruption issue was addressed with improved memory handling. This issue is fixed in iOS 15.0.2 and iPadOS 15.0.2, macOS Monterey 12.0.1,...
Vendor Apple
Product iOS and iPadOS, macOS
Added Date 2022-05-23T00:00:00.000Z
Cvss Score 7.8
Epss Score None
Cvss Severity HIGH
Epss Percentile None
Used In Malware unknown
Ahead Of Cisa Kev None
Not Yet In Cisa Kev False
References
Created: 2026-06-23 14:05 UTC | Updated: 2026-07-10 06:14 UTC
Show details on NVD website
To clipboard 

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Este problema se corrigi\u00f3 en iOS versi\u00f3n 15.0.2 y iPadOS versi\u00f3n 15.0.2, macOS Monterey versi\u00f3n 12.0.1, iOS versi\u00f3n 14.8.1 y iPadOS versi\u00f3n 14.8.1, tvOS versi\u00f3n 15.1, watchOS versi\u00f3n 8.1, macOS Big Sur versi\u00f3n 11.6.1. Una aplicaci\u00f3n puede ser capaz de ejecutar c\u00f3digo arbitrario con privilegios del kernel. Apple es consciente de un informe de que este problema puede haber sido explotado 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updates per vendor instructions.\",\"cisaVulnerabilityName\":\"Apple Multiple Products Memory Corruption 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    "redhat_vex": {
      "current_release_date": "2026-03-27T14:10:27+00:00",
      "cve": "CVE-2021-30883",
      "id": "CVE-2021-30883",
      "initial_release_date": "2021-01-01T00:00:00+00:00",
      "product_status:known_not_affected": "1",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "CVE-2021-30883",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2021/cve-2021-30883.json",
      "version": "3"
    },
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      "dataType": "CVE_RECORD",
      "dataVersion": "5.1"
    }
  }
}



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Taxonomy of the tags.





Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

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.


Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.