CVE-2021-30843 - CVE House
Back to Database
Status published High CVE-2021-30843

This issue was addressed with improved checks. This issue is...

Vulnerability Description

This issue was addressed with improved checks. This issue is fixed in iOS 14.8 and iPadOS 14.8, macOS Big Sur 11.6, Security Update 2021-005 Catalina, tvOS 15, iOS 15 and iPadOS 15, watchOS 8. Processing a maliciously crafted dfont file may lead to arbitrary code execution.

Impact Analysis

Refer to official advisory for detailed impact metrics.

Remediation

Ensure systems are updated to the latest vendor-supplied patch levels.

THREAT MONITOR

Am I Vulnerable?

Launch our assessment wizard to check if your infrastructure is exposed to • CVE-2021-30843

Credits & Attribution

No credits recorded in the NVD database.

References

More from Apple

View All →
CVE-2025-46316
An out-of-bounds read was addressed with improved input validation. This...
Unknown 0
CVE-2025-46315
A permissions issue was addressed with additional restrictions. This issue...
Unknown 0
CVE-2025-46313
A logging issue was addressed with improved data redaction. This...
Unknown 0
CVE-2025-46311
An inconsistent user interface issue was addressed with improved state...
Unknown 0
CVE-2025-46310
This issue was addressed through improved state management. This issue...
Unknown 0

Affected Vendor

Affected Software

macOS
Vulnerable Versions:
unspecified

Timeline

Official Publish: October 19th, 2021
Last Modified: August 3rd, 2024
Added to House: July 21st, 2026

CVSS Vectors

V3: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Weaknesses (CWE)

No CWE data available

MITRE ATT&CK TTPs

No associated TTPs found for this vulnerability.