CVE-2020-3909
9.8
CRITICAL · CVSS 3.1 · EPSS 3% (pctl 87)
In your normal cycle
Critical by CVSS (9.8), but no sign of active exploitation.
Description
A buffer overflow was addressed with improved bounds checking. This issue is fixed in iOS 13.4 and iPadOS 13.4, macOS Catalina 10.15.4, tvOS 13.4, watchOS 6.2, iTunes for Windows 12.10.5, iCloud for Windows 10.9.3, iCloud for Windows 7.18. Multiple issues in libxml2.
Scoring
| CVSS | 9.8 (CRITICAL, v3.1) |
|---|---|
| Vector | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
| EPSS | 3.04% — more likely to be exploited than 87% of all CVEs |
| Weakness | CWE-120 |
| On CISA KEV | no |
| Public exploit | none known |
| Published | 2020-04-01 |
| Last modified | 2026-06-17 |
Affected (8)
| Vendor | Product |
|---|---|
| apple | icloud |
| apple | ipados |
| apple | iphone os |
| apple | itunes |
| apple | mac os x |
| apple | tvos |
| apple | watchos |
| oracle | sun zfs storage appliance kit software |
References
- https://support.apple.com/HT211100
- https://support.apple.com/HT211101
- https://support.apple.com/HT211102
- https://support.apple.com/HT211103
- https://support.apple.com/HT211105
- https://support.apple.com/HT211106
- https://support.apple.com/HT211107
- https://www.oracle.com/security-alerts/cpuoct2020.html
- https://support.apple.com/HT211100
- https://support.apple.com/HT211101
- https://support.apple.com/HT211102
- https://support.apple.com/HT211103
- https://support.apple.com/HT211105
- https://support.apple.com/HT211106
- https://support.apple.com/HT211107
- https://www.oracle.com/security-alerts/cpuoct2020.html
→ the Explorer · watch your stack · NVD