CVE-2021-30770 json
A logic issue was addressed with improved validation.
published 5y ago modified 4mo 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
Is CVE-2021-30770 in your stack? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.
Check with FencerExploit prediction
0.38% chance of exploitation in the next 30 days, higher than 32% of all scored CVEs (FIRST EPSS, 2026-11-09).
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 Intel 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.