CVE-2021-30841 json
This issue was addressed with improved checks.
published 2021-10-19 5 y ago modified 2026-06-17 4 mo ago also EUVD-2021-17758
- cvss
- 7.8
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 1.3%
- EPSS 1.3% chance of exploitation in 30 days, percentile 71%
- public exploits
- 0
- none known
Summary
This issue was addressed with improved checks. This issue is fixed in iOS 14.8 and iPadOS 14.8, macOS Big Sur 11.6, Security Update 2021-005 Catalina, tvOS 15, iOS 15 and iPadOS 15, watchOS 8. Processing a maliciously crafted dfont file may lead to arbitrary code execution.
Patch / fix
- Apple macOS 8, 11.6, 14.8, 15, 2021
Exploit prediction
1.33% chance of exploitation in the next 30 days, higher than 71% 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 | 6.8 | AV:N/AC:M/Au:N/C:P/I:P/A:P |
Affected products
- Apple macOS
References
-
support.apple.com
/en-us/HT212804
release-notes, vendor-advisory
-
support.apple.com
/en-us/HT212805
release-notes, vendor-advisory
-
support.apple.com
/en-us/HT212807
release-notes, vendor-advisory
-
support.apple.com
/en-us/HT212814
release-notes, vendor-advisory
-
support.apple.com
/en-us/HT212819
release-notes, vendor-advisory
-
support.apple.com
/en-us/HT212815
release-notes, vendor-advisory
-
seclists.org
/fulldisclosure/2021/Oct/62
mailing-list, release-notes, third-party-advisory
-
seclists.org
/fulldisclosure/2021/Oct/63
mailing-list, release-notes, third-party-advisory
-
seclists.org
/fulldisclosure/2021/Oct/61
mailing-list, release-notes, third-party-advisory
Sources
- CVE List CVE-2021-30841
- NVD CVE-2021-30841
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.