CVE-2020-3911: apple icloud Classic Buffer Overflow
CVSS: 9.8v3.1CriticalModified
Published 01-04-2020Last modified 04-08-2024
Vulnerability summary
CVE-2020-3911 is a critical (CVSS 9.8) Classic Buffer Overflow vulnerability in apple icloud. EPSS estimates a 1.64% chance of exploitation in the next 30 days, higher than 76.1% of scored vulnerabilities.
CVSS score
9.8/10
010
Critical · v3.1 (NVD)EPSS score
1.64%
0%100%
Low · 0.00 pp in 30 daysKEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded
Timeline
- 01-04-2020PublishedVulnerability first disclosed.
- 04-08-2024Last modifiedVulnerability information updated.
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.
CVSS metrics
2 scores · 1 source · 2 versionsCritical 9.8Preferred score · NVD (NIST)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:HSourcesSingle source
High 7.5Preferred score · NVD (NIST)
AV:N/AC:L/Au:N/C:P/I:P/A:PSourcesSingle source
EPSS trend
Probability
1.64%
Chance of exploitation in the next 30 days
Percentile
76%
Versus all other CVEs
30-day change
0.00 pp
From 1.64% on 21-09-2026
21-09-202621-10-2026
EPSS score1.64%
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Apple12 products
- icloud< 10.9.3
- icloud for windows≥ unspecified, < iCloud for Windows 10.9.3
- icloud for windows (legacy)≥ unspecified, < iCloud for Windows 7.18
- ios≥ unspecified, < iOS 13.4 and iPadOS 13.4
- ipados< 13.4
1 vendor · 12 products