CVE-2021-30900 KEV
7.8
HIGH · CVSS 3.1 · EPSS 5.2% (pctl 92)
Patch first
On CISA KEV — known exploited in the wild, due 2023-04-20.
Description
An out-of-bounds write issue was addressed with improved bounds checking. This issue is fixed in iOS 14.8.1 and iPadOS 14.8.1, iOS 15.1 and iPadOS 15.1. A malicious application may be able to execute arbitrary code with kernel privileges.
Scoring
| CVSS | 7.8 (HIGH, v3.1) |
|---|---|
| Vector | CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H |
| EPSS | 5.2% — more likely to be exploited than 92% of all CVEs |
| Weakness | CWE-787 |
| On CISA KEV | yes — remediate by 2023-04-20 |
| Public exploit | none known |
| Published | 2021-08-24 |
| Last modified | 2026-06-17 |
CISA KEV
| Name | Apple iOS, iPadOS, and macOS Out-of-Bounds Write Vulnerability |
|---|---|
| Added | 2023-03-30 |
| Due | 2023-04-20 |
| Vendor / product | Apple / iOS, iPadOS, and macOS |
| Ransomware use | none reported |
Affected (3)
| Vendor | Product |
|---|---|
| apple | ipados |
| apple | iphone os |
| apple | macos |
References
- https://support.apple.com/en-us/HT212867
- https://support.apple.com/en-us/HT212868
- https://support.apple.com/kb/HT212872
- https://support.apple.com/en-us/HT212867
- https://support.apple.com/en-us/HT212868
- https://support.apple.com/kb/HT212872
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-30900
→ the Explorer · watch your stack · NVD