CVE-2020-9967 json
Multiple memory corruption issues were addressed with improved input validation.
published 2021-04-02 5 y ago modified 2026-06-17 4 mo ago also EUVD-2020-30746
- cvss
- 7.8
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 2.3%
- EPSS 2.3% chance of exploitation in 30 days, percentile 83%
- public exploits
- 0
- none known
Summary
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.
Patch / fix
- Apple tvOS 14.0
- Apple watchOS 7.0
- Apple iOS and iPadOS 14.0
- Apple macOS 11.0, 11.1
Exploit prediction
2.32% chance of exploitation in the next 30 days, higher than 83% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.1 | 7.8 | CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H |
| NVD | 2.0 | 9.3 | AV:N/AC:M/Au:N/C:C/I:C/A:C |
Affected products
- Apple tvOS
- Apple watchOS
- Apple iOS and iPadOS
- Apple macOS
Classification
- Weakness
-
- CWE-787 Out-of-bounds Write
References
-
support.apple.com
/en-us/HT211843
vendor-advisory
-
support.apple.com
/en-us/HT211850
vendor-advisory
-
support.apple.com
/en-us/HT211844
vendor-advisory
-
support.apple.com
/en-us/HT211931
vendor-advisory
-
support.apple.com
/en-us/HT212011
vendor-advisory
-
packetstormsecurity.com
/files/163501/XNU-Network-Stack-Kernel-Heap-Overflow.html
third-party-advisory, vdb-entry
Sources
- CVE List CVE-2020-9967
- NVD CVE-2020-9967
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.