CVE-2021-30837 json
A memory consumption issue was addressed with improved memory handling.
published 2021-10-19 5 y ago modified 2026-06-17 4 mo ago also EUVD-2021-17754
- cvss
- 7.8
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 1.7%
- EPSS 1.7% chance of exploitation in 30 days, percentile 77%
- public exploits
- 0
- none known
Summary
A memory consumption issue was addressed with improved memory handling. This issue is fixed in iOS 15 and iPadOS 15, watchOS 8, tvOS 15. An application may be able to execute arbitrary code with kernel privileges.
Patch / fix
- Apple iOS and iPadOS 15
- Apple tvOS 15
- Apple watchOS 8
Exploit prediction
1.69% chance of exploitation in the next 30 days, higher than 77% 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 | 9.3 | AV:N/AC:M/Au:N/C:C/I:C/A:C |
Affected products
- Apple iOS and iPadOS
- Apple tvOS
- Apple watchOS
References
-
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-2021-30837
- NVD CVE-2021-30837
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.