CVE-2021-30807 KEV
7.8
HIGH · CVSS 3.1 · EPSS 28.8% (pctl 98)
Patch first
On CISA KEV — known exploited in the wild, due 2021-11-17.
Description
A memory corruption issue was addressed with improved memory handling. This issue is fixed in macOS Big Sur 11.5.1, iOS 14.7.1 and iPadOS 14.7.1, watchOS 7.6.1. 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.
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 | 28.84% — more likely to be exploited than 98% of all CVEs |
| Weakness | CWE-787 |
| On CISA KEV | yes — remediate by 2021-11-17 |
| Public exploit | none known |
| Published | 2021-10-19 |
| Last modified | 2026-06-17 |
CISA KEV
| Name | Apple Multiple Products Memory Corruption Vulnerability |
|---|---|
| Added | 2021-11-03 |
| Due | 2021-11-17 |
| Vendor / product | Apple / Multiple Products |
| Ransomware use | none reported |
Affected (4)
| Vendor | Product |
|---|---|
| apple | ipados |
| apple | iphone os |
| apple | macos |
| apple | watchos |
References
- https://support.apple.com/en-us/HT212622
- https://support.apple.com/en-us/HT212623
- https://support.apple.com/en-us/HT212713
- https://support.apple.com/en-us/HT212622
- https://support.apple.com/en-us/HT212623
- https://support.apple.com/en-us/HT212713
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-30807
→ the Explorer · watch your stack · NVD