CVE-2021-1818 json
A logic issue was addressed with improved state management.
published 2021-04-02 5 y ago modified 2026-06-17 4 mo ago also EUVD-2021-7282
- cvss
- 9.8
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 3.0%
- EPSS 3.0% chance of exploitation in 30 days, percentile 87%
- public exploits
- 0
- none known
Summary
A logic issue was addressed with improved state management. This issue is fixed in macOS Big Sur 11.2, Security Update 2021-001 Catalina, Security Update 2021-001 Mojave, watchOS 7.3, tvOS 14.4, iOS 14.4 and iPadOS 14.4. A remote attacker may be able to cause unexpected application termination or arbitrary code execution.
Patch / fix
- Apple iOS and iPadOS 14.4
- Apple macOS 7.3, 11.2, 14.4
Exploit prediction
2.96% chance of exploitation in the next 30 days, higher than 87% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.1 | 9.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
| NVD | 2.0 | 7.5 | AV:N/AC:L/Au:N/C:P/I:P/A:P |
Affected products
- Apple iOS and iPadOS
- Apple macOS
References
-
support.apple.com
/en-us/HT212147
vendor-advisory
-
support.apple.com
/en-us/HT212146
vendor-advisory
-
support.apple.com
/en-us/HT212148
vendor-advisory
-
support.apple.com
/en-us/HT212149
vendor-advisory
Sources
- CVE List CVE-2021-1818
- NVD CVE-2021-1818
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.