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    CVE-2020-27930

    A memory corruption issue was addressed with improved input validation. This issue is fixed in macOS Big Sur 11.0.1, watchOS 7.1, iOS 12.4.9, watchOS 6.2.9, Security Update 2020-006 High Sierra, Security Update 2020-006 Mojave, iOS 14.2 and iPadOS 14.2, watchOS 5.3.9, macOS Catalina 10.15.7 Supplemental Update, macOS Catalina 10.15.7 Update. Processing a maliciously crafted font may lead to arbitrary code execution.

    Published:Dec 8, 2020
    Last Modified:Oct 27, 2025
    EPS:Dec 8, 2020
    EPSS Score:0.48824
    CVSS Score:7.8

    CISA Notification

    Description

    A memory corruption issue was addressed with improved input validation. This issue is fixed in macOS Big Sur 11.0.1, watchOS 7.1, iOS 12.4.9, watchOS 6.2.9, Security Update 2020-006 High Sierra, Security Update 2020-006 Mojave, iOS 14.2 and iPadOS 14.2, watchOS 5.3.9, macOS Catalina 10.15.7 Supplemental Update, macOS Catalina 10.15.7 Update. Processing a maliciously crafted font may lead to arbitrary code execution.

    Required Action:

    Apply updates per vendor instructions.

    Notes:

    No extra notes provided.

    Due Date
    May 3, 2022
    1592 days ago
    Alert Date
    Nov 3, 2021
    1773 days ago

    Affected Products

    Vendor
    Apple
    Product
    Ipados
    Vendor
    Apple
    Product
    Iphone Os
    Vendor
    Apple
    Product
    Mac Os X
    Vendor
    Apple
    Product
    Macos
    Vendor
    Apple
    Product
    Watchos

    Exploits

    https://github.com/FunPhishing/Apple-Safari-Remote-Code-Execution-CVE-2020-27930

    Common Weakness Enumeration

    CWE-787 Out-of-bounds Write

    Common Attack Pattern Enumeration and Classification (CAPEC)

    No CAPEC recorded yet

    Related CVEs

    CVE-2026-65367 (CVSS 5.5) — A null pointer dereference was addressed with improved input validation. This issue is fixed in iOS 18.7.9 and…
    CVE-2026-43670 (CVSS 8.8) — A Content Security Policy bypass was addressed with improved enforcement in AudioWorklet contexts. This issue …
    CVE-2026-65331 (CVSS 4.3) — This issue was addressed through improved state management. This issue is fixed in Safari 26.6.1, iOS 18.7.10 …
    CVE-2026-64760 (CVSS 5.5) — An information leakage was addressed with additional validation. This issue is fixed in iOS 18.7.10 and iPadOS…
    CVE-2026-43794 (CVSS 8.8) — A memory corruption issue was addressed with improved memory handling. This issue is fixed in Safari 26.6.1, i…
    CVE-2026-65346 (CVSS 8.8) — An integer overflow was addressed with improved input validation. This issue is fixed in iOS 26.6.1 and iPadOS…
    CVE-2026-65351 (CVSS 4.3) — This issue was addressed through improved state management. This issue is fixed in Safari 26.6.1, iOS 26.6.1 a…
    CVE-2026-64782 (CVSS 3.1) — A memory corruption vulnerability was addressed with improved locking. This issue is fixed in Safari 26.6.1, i…
    CVE-2026-65347 (CVSS 6.5) — The issue was addressed with improved checks. This issue is fixed in iOS 26.6.1 and iPadOS 26.6.1, macOS Tahoe…
    CVE-2026-43795 (CVSS 4.3) — The issue was addressed with improved memory handling. This issue is fixed in Safari 26.6.1, iOS 18.7.10 and i…

    References

    http://packetstormsecurity.com/files/161294/Apple-Safari-Remote-Code-Execution.html
    http://seclists.org/fulldisclosure/2020/Dec/32
    https://support.apple.com/en-us/HT211928
    https://support.apple.com/en-us/HT211929
    https://support.apple.com/en-us/HT211931
    https://support.apple.com/en-us/HT211940
    https://support.apple.com/en-us/HT211944
    https://support.apple.com/en-us/HT211945
    https://support.apple.com/en-us/HT211946
    https://support.apple.com/en-us/HT211947
    http://packetstormsecurity.com/files/161294/Apple-Safari-Remote-Code-Execution.html
    http://seclists.org/fulldisclosure/2020/Dec/32
    https://support.apple.com/en-us/HT211928
    https://support.apple.com/en-us/HT211929
    https://support.apple.com/en-us/HT211931
    https://support.apple.com/en-us/HT211940
    https://support.apple.com/en-us/HT211944
    https://support.apple.com/en-us/HT211945
    https://support.apple.com/en-us/HT211946
    https://support.apple.com/en-us/HT211947
    https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2020-27930

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High