CVE-2021-30807VulnerabilityPublished 11/03/2021Updated 10/24/2026

CVE-2021-30807: Apple Multiple Products Memory Corruption Vulnerability

Affects Apple Multiple ProductsSource CISA KEV

Severity

High

No CVSS score published yet

Exploitation: Actively exploited – in CISA KEV since 11/03/2021
KEV deadline: 11/17/2021
EPSS: 28.8% chance of exploitation in 30 days – higher than 98% of CVEs

What to do

CISA required action

Apply updates per vendor instructions.

nvd.nist.gov/vuln/detail/CVE-2021-30807 (opens in a new tab)

Description

A memory corruption vulnerability exists in Apple iOS, iPadOS, macOS, and watchOS within the IOMobileFrameBuffer component. This flaw may allow an application to execute code with kernel privileges. The vulnerability has been exploited in the wild. No specific affected versions or patch information is provided.

Summary

CVE-2021-30807 is a memory corruption vulnerability in the IOMobileFrameBuffer component affecting multiple Apple operating systems including iOS, iPadOS, macOS, and watchOS. Successful exploitation may enable an application to execute arbitrary code with kernel-level privileges, potentially leading to full system compromise. The vulnerability has been observed in active exploitation scenarios. No vendor advisory or patch details are included in the provided data.

Impact

Exploitation of this vulnerability can result in arbitrary code execution with kernel privileges, which may allow attackers to bypass security controls and gain full control over affected devices. The vulnerability has been exploited in the wild, indicating active threat and real-world impact.

Mitigation

Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Due to the lack of explicit patch or mitigation information, users and administrators should monitor official Apple security advisories for updates and apply any available fixes promptly.

Weaknesses

CWE-787Out-of-bounds Write (opens in a new tab)

What to do

Description

AnalysisAI-generated, updated 10/24/2026, 09:41:29 UTC

Weaknesses

References

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