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CVE-2021-30666

Date: September 8, 2021

A buffer overflow issue was addressed with improved memory handling. This issue is fixed in iOS 12.5.3. 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..

Severity Score

Related Resources (7)

https://nvd.nist.gov/vuln/detail/CVE-2021-30666
https://support.apple.com/en-us/HT212341
https://security-tracker.debian.org/tracker/CVE-2021-30666
https://security.alpinelinux.org/vuln/CVE-2021-30666
https://people.canonical.com/~ubuntu-security/cve/CVE-2021-30666
https://access.redhat.com/security/cve/CVE-2021-30666
https://www.mend.io/vulnerability-database/CVE-2021-30666

Severity Score

Weakness Type (CWE)

Buffer Errors

CWE-119

Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')

CWE-120

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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