CVE-2021-30883 kev in the critical feed json
A memory corruption issue was addressed with improved memory handling.
published 2021-08-24 5 y ago modified 2026-06-17 4 mo ago also EUVD-2021-17800
- cvss
- 7.8
- version 3.1, CNA
- cisa kev
- Exploited
- added 2022-05-23
- epss
- 14.7%
- EPSS 14.7% chance of exploitation in 30 days, percentile 96%
- public exploits
- 0
- none known
Summary
A memory corruption issue was addressed with improved memory handling. This issue is fixed in iOS 15.0.2 and iPadOS 15.0.2, macOS Monterey 12.0.1, iOS 14.8.1 and iPadOS 14.8.1, tvOS 15.1, watchOS 8.1, macOS Big Sur 11.6.1. An application may be able to execute arbitrary code with kernel privileges. Apple is aware of a report that this issue may have been actively exploited..
Patch / fix
cisa required action Apply updates per vendor instructions.
- Apple iOS and iPadOS 14.8, 15.0
- Apple macOS 8.1, 11.6, 12.0, 15.1
Timeline
- Published
- 0-day patched (Project Zero)
- Added to CISA KEV
- CISA patch deadline
- CISA SSVC: exploitation active
Known exploited
- Added
- 4 y ago
- Patch by
- 2022-06-13 (4 y ago)
- Ransomware
- Not known
- Required action
- Apply updates per vendor instructions.
- Vendor, product
- Apple, Multiple Products
- CISA name
- Apple Multiple Products Memory Corruption Vulnerability
Zero-day
Detected in real attacks while still unknown to the vendor and the public, per Google Project Zero's 0day In-the-Wild tracker.
- Patched
- 2021-10-11
- Details
- project zero tracker
CISA SSVC
- Exploitation
- Active, exploited in the wild
- Automatable
- no
- Technical impact
- total
- Assessed
- 21 mo ago
Exploit prediction
14.72% chance of exploitation in the next 30 days, higher than 96% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CISA ADP | 3.1 | 7.8 | CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H |
| NVD | 3.1 | 7.8 | CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H |
| CNA | 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 macOS
Classification
- Weakness
-
- CWE-787 Out-of-bounds Write
References
-
support.apple.com
/en-us/HT212869
vendor-advisory
-
support.apple.com
/en-us/HT212872
vendor-advisory
-
support.apple.com
/en-us/HT212846
vendor-advisory
-
support.apple.com
/en-us/HT212868
vendor-advisory
-
support.apple.com
/en-us/HT212874
vendor-advisory
-
support.apple.com
/en-us/HT212876
vendor-advisory
-
cisa.gov
/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-30883
government-resource, us-government-resource
Sources
- CVE List CVE-2021-30883
- NVD CVE-2021-30883
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.