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CVE-2021-1817

Date: September 8, 2021

A memory corruption issue was addressed with improved state management. This issue is fixed in macOS Big Sur 11.3, iOS 14.5 and iPadOS 14.5, watchOS 7.4, tvOS 14.5. Processing maliciously crafted web content may lead to arbitrary code execution.

Severity Score

Related Resources (10)

https://security.alpinelinux.org/vuln/CVE-2021-1817
https://access.redhat.com/security/cve/CVE-2021-1817
https://security-tracker.debian.org/tracker/CVE-2021-1817
https://support.apple.com/en-us/HT212323
https://support.apple.com/en-us/HT212324
https://nvd.nist.gov/vuln/detail/CVE-2021-1817
https://support.apple.com/en-us/HT212317
https://support.apple.com/en-us/HT212325
https://people.canonical.com/~ubuntu-security/cve/CVE-2021-1817
https://www.mend.io/vulnerability-database/CVE-2021-1817

Severity Score

Weakness Type (CWE)

Out-of-bounds Write

CWE-787

CVSS v3.1

Base Score:
Attack Vector (AV): NETWORK
Attack Complexity (AC): LOW
Privileges Required (PR): NONE
User Interaction (UI): REQUIRED
Scope (S): UNCHANGED
Confidentiality (C): HIGH
Integrity (I): HIGH
Availability (A): HIGH

CVSS v2

Base Score:
Access Vector (AV): NETWORK
Access Complexity (AC): MEDIUM
Authentication (AU): NONE
Confidentiality (C): PARTIAL
Integrity (I): PARTIAL
Availability (A): PARTIAL
Additional information:

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