CVE-2021-30827 json
A permissions issue existed.
published 2021-10-19 5 y ago modified 2026-06-17 4 mo ago also EUVD-2021-17744
- cvss
- 7.8
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.2%
- EPSS 0.2% chance of exploitation in 30 days, percentile 16%
- public exploits
- 0
- none known
Summary
A permissions issue existed. This issue was addressed with improved permission validation. This issue is fixed in Security Update 2021-005 Catalina, macOS Big Sur 11.6. A local attacker may be able to elevate their privileges.
Patch / fix
- Apple macOS 11.6, 2021
Exploit prediction
0.25% chance of exploitation in the next 30 days, higher than 16% 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:L/UI:N/S:U/C:H/I:H/A:H |
| NVD | 2.0 | 4.6 | AV:L/AC:L/Au:N/C:P/I:P/A:P |
Affected products
- Apple macOS
Classification
- Weakness
-
- CWE-281 Improper Preservation of Permissions
References
-
support.apple.com
/en-us/HT212804
release-notes, vendor-advisory
-
support.apple.com
/en-us/HT212805
release-notes, vendor-advisory
Sources
- CVE List CVE-2021-30827
- NVD CVE-2021-30827
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.