CVEs / CVE-2020-27930
CVE-2020-27930: Apple Multiple Products Memory Corruption Vulnerability
- Known exploited in the CISA KEV catalog since 3 Nov 2021
- high 7.8 CVSS 3.1 (NVD)
- EPSS 22% chance of exploitation in the next 30 days, higher than 97% of CVEs (30 Oct 2026)
- Last changed at its sources
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Summary
Apple iOS, iPadOS, macOS, and watchOS FontParser contain a memory corruption vulnerability which may allow for code execution when processing maliciously crafted front.
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.
Affected and fixed versions
| Product | Affected | Fixed in |
|---|---|---|
| Apple watchOS | from unspecified, before 7.1 | 7.1 |
| Apple iOS and iPadOS | from unspecified, before 14.2 | 14.2 |
| Apple macOS | from unspecified, before 11.0 | 11.0 |
| Apple macOS | from unspecified, before 12.4 | 12.4 |
| Apple macOS | from unspecified, before 6.2 | 6.2 |
| Apple macOS | from unspecified, before 5.3 | 5.3 |
| Apple macOS | from unspecified, before 2020 | 2020 |
| Apple macOS | from unspecified, before 10.15 | 10.15 |
Exploitation
| In CISA KEV since | 3 Nov 2021 |
|---|---|
| Due date for US federal agencies | 3 May 2022 |
| Used in ransomware campaigns | Unknown |
| Required action | Apply updates per vendor instructions. |
Severity
| CVSS 3.1 | 7.8 highCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:HScored by NVD |
|---|---|
| Weakness | CWE-787 |
References
- CVE-2020-27930 on NVD
- CVE-2020-27930 in the CISA KEV catalog
- http://packetstormsecurity.com/files/161294/Apple-Safari-Remote-Code-Execution.html Third Party Advisory, VDB Entry
- http://seclists.org/fulldisclosure/2020/Dec/32 Mailing List, Third Party Advisory
- https://support.apple.com/en-us/HT211928 Vendor Advisory
- https://support.apple.com/en-us/HT211929 Vendor Advisory
- https://support.apple.com/en-us/HT211931 Vendor Advisory
- https://support.apple.com/en-us/HT211940 Vendor Advisory
- https://support.apple.com/en-us/HT211944 Vendor Advisory
- https://support.apple.com/en-us/HT211945 Vendor Advisory
- https://support.apple.com/en-us/HT211946 Vendor Advisory
- https://support.apple.com/en-us/HT211947 Vendor Advisory
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2020-27930 US Government Resource
Sources
Exploitation status from the CISA Known Exploited Vulnerabilities catalog. EPSS scores from FIRST. Descriptions, severity and references from the National Vulnerability Database. Open-source package versions from OSV (CC-BY 4.0). Text is shown as each source states it; Stackurity does not edit it. Check the vendor's advisory before acting.
This product uses data from the NVD API but is not endorsed or certified by the NVD.