CVE-2020-3826 is listed by An out-of-bounds read was addressed with improved input validation..

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

• cpe apple/icloud< 11.0
• cpe apple/ipados< 13.3.1
• cpe apple/iphone os< 13.3.1
• cpe apple/itunes< 12.10.4
• cpe apple/mac os x< 10.15.3
• cpe apple/tvos< 13.3.1
• cpe apple/watchos< 6.1.2

How to fix CVE-2020-3826

• Recommended remediation

  Affected version ranges suggest a fixed boundary. Verify against the vendor advisory for your release.

• Official advisories

  • Apple Security Releases · nvd.nist.gov
  • CVE.org · cve.org
  • FIRST EPSS · first.org

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Code

The project this record applies to. Exploit listings stay in References.

No public source repository is identified for this product.

Timeline

Detection, updates, and resolution for this record.

1. Feb 27, 2020 · Apple Security Releases

   Detected

   CVE-2020-3826 is listed by An out-of-bounds read was addressed with improved input validation..

2. Jun 17, 2026 · Apple Security Releases

   Updated

   CVE-2020-3826 is listed by An out-of-bounds read was addressed with improved input validation..

Sources

• Apple Security ReleasesVendor advisoryCVE-2020-3826

  An out-of-bounds read was addressed with improved input validation. This issue is fixed in iOS 13.3.1 and iPadOS 13.3.1, macOS Catalina 10.15.3, tvOS 13.3.1, watchOS 6.1.2, iTunes for Windows 12.10.4, iCloud for Windows 11.0, iCloud for Windows 7.17. Processing a maliciously crafted image may lead to arbitrary code execution.

  nvd.nist.gov
• CVE.orgVulnerability recordCVE-2020-3826

  Official CVE identifier

  cve.org
• FIRST EPSSExploitation probabilityCVE-2020-3826

  30-day exploitation probability 1.19%

  first.org

References

• Release Notes · support.apple.com
• Release Notes · support.apple.com

Freshness

Last verified in this catalog Oct 23, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.