CVE-2021-30770 json
A logic issue was addressed with improved validation.
published 2021-09-08 5 y ago modified 2026-06-17 4 mo ago also EUVD-2021-17687
- cvss
- 5.5
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.4%
- EPSS 0.4% chance of exploitation in 30 days, percentile 32%
- public exploits
- 0
- none known
Summary
A logic issue was addressed with improved validation. This issue is fixed in iOS 14.7, tvOS 14.7, watchOS 7.6. An attacker that has already achieved kernel code execution may be able to bypass kernel memory mitigations.
Patch / fix
- Apple iOS 14.7
- Apple tvOS 14.7
- Apple watchOS 7.6
Exploit prediction
0.38% chance of exploitation in the next 30 days, higher than 32% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.1 | 5.5 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N |
| NVD | 2.0 | 4.9 | AV:L/AC:L/Au:N/C:N/I:C/A:N |
Affected products
- Apple iOS
- Apple tvOS
- Apple watchOS
Classification
- Weakness
-
- CWE-287 Improper Authentication
References
-
support.apple.com
/en-us/HT212601
release-notes, vendor-advisory
-
support.apple.com
/en-us/HT212605
release-notes, vendor-advisory
-
support.apple.com
/en-us/HT212604
release-notes, vendor-advisory
Sources
- CVE List CVE-2021-30770
- NVD CVE-2021-30770
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.