A memory corruption issue was addressed with improved state management. This issue is fixed in watchOS 7.4.1, iOS 14.5.1 and iPadOS 14.5.1, tvOS 14.6, iOS 12.5.3, macOS Big Sur 11.3.1. Processing maliciously crafted web content may lead to arbitrary code execution. Apple is aware of a report that this issue may have been actively exploited..
Published 2021-09-08 15:15:14
Updated 2022-05-03 16:04:40
Source Apple Inc.
View at NVD,   CVE.org
Vulnerability category: Memory Corruption

CVE-2021-30665 is in the CISA Known Exploited Vulnerabilities Catalog

CISA vulnerability name:
Apple Multiple Products Memory Corruption Vulnerability
CISA required action:
Apply updates per vendor instructions.
CISA description:
Apple iOS, iPadOS, macOS, watchOS, and tvOS WebKit contain a memory corruption vulnerability which may allow for code execution when processing maliciously crafted web content.
Added on 2021-11-03 Action due date 2021-11-17

Exploit prediction scoring system (EPSS) score for CVE-2021-30665

Probability of exploitation activity in the next 30 days: 0.43%

Percentile, the proportion of vulnerabilities that are scored at or less: ~ 74 % EPSS Score History EPSS FAQ

CVSS scores for CVE-2021-30665

Base Score Base Severity CVSS Vector Exploitability Score Impact Score Score Source
6.8
MEDIUM AV:N/AC:M/Au:N/C:P/I:P/A:P
8.6
6.4
NIST
8.8
HIGH CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
2.8
5.9
NIST

CWE ids for CVE-2021-30665

  • The product writes data past the end, or before the beginning, of the intended buffer.
    Assigned by: nvd@nist.gov (Primary)

References for CVE-2021-30665

Products affected by CVE-2021-30665

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