CVE-2019-8820: apple icloud Out-of-bounds Write
Vulnerability summary
CVE-2019-8820 is a high (CVSS 8.8) Out-of-bounds Write vulnerability in apple icloud. EPSS estimates a 9.54% chance of exploitation in the next 30 days, higher than 95.4% of scored vulnerabilities. 1 public exploit is recorded.
Advisory lineage
Upstream 0 · Downstream 8 · Related 4Timeline
- 18-12-2019PublishedVulnerability first disclosed.
- 04-08-2024Last modifiedVulnerability information updated.
Description
Multiple memory corruption issues were addressed with improved memory handling. This issue is fixed in iOS 13.2 and iPadOS 13.2, tvOS 13.2, watchOS 6.1, Safari 13.0.3, iTunes for Windows 12.10.2, iCloud for Windows 11.0, iCloud for Windows 7.15. Processing maliciously crafted web content may lead to arbitrary code execution.
CVSS metrics
4 scores · 3 sources · 2 versions- OSV · UbuntuEcosystem advisory · calculated8.8HighCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
- OSV · DebianEcosystem advisory · calculated8.8HighCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
EPSS trend
Probability
9.54%
Chance of exploitation in the next 30 days
Percentile
95%
Versus all other CVEs
30-day change
0.00 pp
From 9.54% on 18-09-2026
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
1 foundJavaScriptCore - Type Confusion During Bailout when Reconstructing Arguments Objects
Maturity: poc
Weaknesses
CWE · root causeAffected systems
Apple11 products
- icloud< 7.15 | ≥ 10.0, < 10.8
- icloud for windows≥ unspecified, < iCloud for Windows 11.0
- icloud for windows (legacy)≥ unspecified, < iCloud for Windows 7.15
- ios≥ unspecified, < iOS 13.2 and iPadOS 13.2
- ipados< 13.2
Ubuntu4 products
- qtwebkit-opensource-srcAll versions (No fix recorded)
- qtwebkit-sourceAll versions (No fix recorded)
- webkit2gtkAll versions (No fix recorded) | < 2.26.1-0ubuntu0.18.04.1
- webkitgtkAll versions (No fix recorded)
Debian1 product
- webkit2gtk< 2.26.1-1
3 vendors · 16 products
