Home/CVE/An out-of-bounds read was addressed with improved input validation. This issue is fixed in tvOS 14.6, iOS 14.6 and iPadO
CVE

CVE-2021-30733

An out-of-bounds read was addressed with improved input validation. This issue is fixed in tvOS 14.6, iOS 14.6 and iPadO

An out-of-bounds read was addressed with improved input validation. This issue is fixed in tvOS 14.6, iOS 14.6 and iPadOS 14.6, Security Update 2021-004 Catalina, Security Update 2021-005 Mojave, macOS Big Sur 11.4, watchOS 7.5. Processing a maliciously crafted font may result in the disclosure of process memory.

MEDIUM · CVSS 5.5 EPSS 0.00334
Monitor
  • No active-exploitation, high-EPSS, or public-exploit signals - routine patching cadence
Sigma rules0 YARA rules0
⬡

Weakness Classification

CWE-125Out-of-bounds Read
▤

Affected Products & Versions

7
apple ipados< 14.6
apple iphone os< 14.6
apple mac os x>= 10.14.0 and <= 10.14.5
apple mac os xall versions
apple macos>= 11.0.1 and < 11.4
apple tvos< 14.6
apple watchos< 7.5
▣

Scoring & Timeline

5.5
MEDIUM · CVSS v3.1 · product-security@apple.com
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD08 Sep 2021 · 02:15 PM
CVSS VectorCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
🔗

References & Sources

6
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
https://support.apple.com/en-us/HT212528Vendor Advisory
https://support.apple.com/en-us/HT212529Vendor Advisory
https://support.apple.com/en-us/HT212532Vendor Advisory
https://support.apple.com/en-us/HT212533Vendor Advisory
https://support.apple.com/en-us/HT212600Vendor Advisory
https://support.apple.com/en-us/HT212603Vendor Advisory
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