CVE-2020-9794An out-of-bounds read was addressed with improved bounds checking. This issue is fixed in iOS 13.5 and iPadOS 13.5, macOS Catalina…
- 8.1HighCVSS base score
- 1.6%Exploitation in 30 daysEPSS · top 24% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
Description
An out-of-bounds read was addressed with improved bounds checking. This issue is fixed in iOS 13.5 and iPadOS 13.5, macOS Catalina 10.15.5, tvOS 13.4.5, watchOS 6.2.5, iTunes 12.10.7 for Windows, iCloud for Windows 11.2, iCloud for Windows 7.19. A malicious application may cause a denial of service or potentially disclose memory contents.
Timeline
ID reserved
By apple
- 3 months later
· 3 months later
Published
- 4 years later
· 4 years later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| NVDNVD · Modified | 3.1 | High8.1 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:H |
- EPSS (exploitation in 30 days)
- 1.6% · top 24% of all CVEs (13 Nov 2026)
The list uses the assigner's score when there is one, then CISA's, then NVD's: High 8.1.
Affected products
- affected unspecified – < iOS 13.5 and iPadOS 13.5
- affected unspecified – < macOS Catalina 10.15.5
- affected unspecified – < tvOS 13.4.5
- affected unspecified – < watchOS 6.2.5
- affected unspecified – < iTunes 12.10.7 for Windows
- affected unspecified – < iCloud for Windows 11.2
Apple · iCloud for Windows (Legacy)
- affected unspecified – < iCloud for Windows 7.19
References
References8
- https://support.apple.com/HT211168 (opens in a new tab)x_refsource_MISCx_transferred
- https://support.apple.com/HT211170 (opens in a new tab)x_refsource_MISCx_transferred
- https://support.apple.com/HT211171 (opens in a new tab)x_refsource_MISCx_transferred
- https://support.apple.com/HT211175 (opens in a new tab)x_refsource_MISCx_transferred
- https://support.apple.com/HT211178 (opens in a new tab)x_refsource_MISCx_transferred
- https://support.apple.com/HT211179 (opens in a new tab)x_refsource_MISCx_transferred
- https://support.apple.com/HT211181 (opens in a new tab)x_refsource_MISCx_transferred
- [mina-dev] 20210225 [jira] [Created] (FTPSERVER-500) Security vulnerability in common/lib/log4j-1.2.17.jar (opens in a new tab)mailing-listx_refsource_MLISTx_transferred
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2020-30573 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2020-9794)Record last updated .