CyberSec.Space Logo
Back to CVE Browser

CVE-2021-30983

🔥 Known Exploited (CISA KEV)HIGH
7.8
CVSS Severity Score
EPSS Score93.0970%
EPSS Percentile87.41th
Published2021-08-24
Last Modified2025-10-23
Data SourcesNVDCISA KEVFIRST.org EPSS

Vulnerability Description

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.

Affected Platforms (CPE)

💻
Apple

Ipados

< 15.2
💻
Apple

Iphone Os

< 15.2

References & Advisories

🔗 https://support.apple.com/en-us/HT212976
🔗 https://support.apple.com/en-us/HT212976
🔗 https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-30983

Related Vulnerabilities

CVE-2026-647838.8

A use-after-free issue was addressed with improved memory management. This issue is fixed in Safari 26.6, iOS 26.6 and iPadOS 26.6...

CVE-2026-647759.8

A memory initialization issue was addressed with improved memory handling. This issue is fixed in iOS 26.6 and iPadOS 26.6, macOS ...

CVE-2026-647749.8

An integer overflow was addressed with improved input validation. This issue is fixed in iOS 26.6 and iPadOS 26.6, macOS Sequoia 1...

CVE-2026-647729.8

An out-of-bounds write issue was addressed with improved input validation. This issue is fixed in iOS 26.6 and iPadOS 26.6, macOS ...