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Vulnerability · Published Aug 17, 2026 · Assigned by apple

CVE-2026-64778

Medium 6.5

In plain English

A medium-severity information exposure in iOS and iPadOS from Apple. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 27% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)6.5Medium
Exploit odds (30 days)0.3%top 72.6% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known

Official description

The issue was addressed with improved checks. This issue is fixed in Safari 26.6.1, iOS 18.7.10 and iPadOS 18.7.10, iOS 26.6.1 and iPadOS 26.6.1, macOS Tahoe 26.6.2, tvOS 27, visionOS 27, watchOS 27. Visiting a maliciously crafted website may leak sensitive data.

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
Debian:12webkit2gtkno fix listedDEBIAN-CVE-2026-64778
Debian:13webkit2gtk2.54.0-1~deb13u1DEBIAN-CVE-2026-64778
Debian:14webkit2gtkno fix listedDEBIAN-CVE-2026-64778
Debian:12wpewebkitno fix listedDEBIAN-CVE-2026-64778
Debian:13wpewebkitno fix listedDEBIAN-CVE-2026-64778
Debian:14wpewebkit2.54.0-1DEBIAN-CVE-2026-64778

Affected products (as reported)

VendorProductVersions
Apple Safari 0 – before 26.6.1
Apple iOS and iPadOS 0 – before 18.7.100 – before 26.6.1
Apple macOS 0 – before 26.6.2
Apple tvOS 0 – before 27
Apple visionOS 0 – before 27
Apple watchOS 0 – before 27

Weakness: CWE-200 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N

References