{"cve":"CVE-2020-9967","nvd":{"published":"2021-04-02T18:15:18.637","modified":"2026-06-17T03:28:53.630","status":"Modified","description":"Multiple memory corruption issues were addressed with improved input validation. This issue is fixed in macOS Big Sur 11.0.1, tvOS 14.0, macOS Big Sur 11.1, Security Update 2020-001 Catalina, Security Update 2020-007 Mojave, watchOS 7.0, iOS 14.0 and iPadOS 14.0. A remote attacker may be able to cause unexpected system termination or corrupt kernel memory.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","score":7.8},"cwes":["CWE-787"],"references":["http://packetstormsecurity.com/files/163501/XNU-Network-Stack-Kernel-Heap-Overflow.html","https://support.apple.com/en-us/HT211843","https://support.apple.com/en-us/HT211844","https://support.apple.com/en-us/HT211850","https://support.apple.com/en-us/HT211931"],"products":["apple:ipados","apple:iphone_os","apple:mac_os_x","apple:macos","apple:tvos","apple:watchos"],"source":"nvd","synced_at":"2026-10-19T21:17:01.373894544+00:00"},"epss":{"cve":"CVE-2020-9967","score":0.02323,"percentile":0.83491,"date":"2026-10-31"},"kev":null,"osv":[],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}