CVE-2020-27930
Apple Multiple Products Memory Corruption Vulnerability is confirmed as actively exploited and is listed in the CISA KEV catalog.
Required action
Apply updates per vendor instructions.
CISA notes
https://nvd.nist.gov/vuln/detail/CVE-2020-27930
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.
Severity
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:HExploitation Context
as of October 14, 2026- CISA added CVE-2020-27930 to the KEV catalog 330 days after its CVE record was published.
- It is one of 95 Apple entries in the CISA KEV catalog, and one of 23 added in 2021.
- Its current EPSS score (22.0%) is higher than that of 36% of CISA KEV entries.
Affected Products
| Vendor | Product | Affected versions |
|---|---|---|
| Apple | Apple watchOS | unspecified to <7.1 |
| Apple | Apple iOS and iPadOS | unspecified to <14.2 |
| Apple | Apple macOS | unspecified to <11.0 |
| Apple | Apple macOS | unspecified to <12.4 |
| Apple | Apple macOS | unspecified to <6.2 |
| Apple | Apple macOS | unspecified to <5.3 |
| Apple | Apple macOS | unspecified to <2020 |
| Apple | Apple macOS | unspecified to <10.15 |
References
10 Links- https://support.apple.com/en-us/HT211931
- https://support.apple.com/en-us/HT211928
- https://support.apple.com/en-us/HT211929
- 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
Record Details
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CVE record data © The MITRE Corporation, used under the CVE Terms of Use. Exploited-in-the-wild data from the CISA Known Exploited Vulnerabilities catalog (CC0). Exploit prediction scores by FIRST EPSS (first.org/epss). This site is not endorsed or certified by MITRE, NVD, CISA, or FIRST.