Critical severity9.8NVD Advisory· Published Apr 1, 2020· Updated Jun 17, 2026

CVE-2020-3911

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.

AI Insight

LLM-synthesized narrative grounded in this CVE's description and references.

Affected products

Apple Inc./macOS Catalinallm-fuzzy
Range: 10.15.4
Apple Inc./tvOSllm-fuzzy2 versions
13.4+ 1 more
- (no CPE)range: 13.4
- (no CPE)range: unspecified
Apple Inc./Ipadosllm-fuzzy
Range: 13.4
Apple Inc./watchOSllm-fuzzy2 versions
6.2+ 1 more
- (no CPE)range: 6.2
- (no CPE)range: unspecified
Apple Inc./iTunesllm-fuzzy
Range: 12.10.5
Apple Inc./iOSllm-fuzzy2 versions
13.4+ 1 more
- (no CPE)range: 13.4
- (no CPE)range: unspecified
Apple Inc./iCloud for Windowsllm-fuzzy3 versions
10.9.3+ 2 more
- (no CPE)range: 10.9.3
- (no CPE)range: unspecified
- (no CPE)range: unspecified
Apple Inc./macOSv5
Range: unspecified
Apple Inc./iTunes for Windowscpe-rescue
Range: unspecified

Patches

Vulnerability mechanics

References

support.apple.com/HT211100nvdVendor Advisory
support.apple.com/HT211101nvdVendor Advisory
support.apple.com/HT211102nvdVendor Advisory
support.apple.com/HT211103nvdVendor Advisory
support.apple.com/HT211105nvdVendor Advisory
support.apple.com/HT211106nvdVendor Advisory
support.apple.com/HT211107nvdVendor Advisory

News mentions

No linked articles in our index yet.

cvss	0.637
epss	0.001
exploit	0.000
kev	0.000
patch	0.000
ransomware	0.000