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Vulnerability · Published May 11, 2026 · Assigned by apple

CVE-2026-28953

High 7.5

In plain English

A high-severity memory corruption 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 0.4% (higher than 36% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)7.5High
Exploit odds (30 days)0.4%top 64.5% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known

Official description

The issue was addressed with improved memory handling. This issue is fixed in Safari 26.5, iOS 18.7.9 and iPadOS 18.7.9, iOS 26.5 and iPadOS 26.5, macOS Tahoe 26.5, tvOS 26.5, visionOS 26.5, watchOS 26.5. Processing maliciously crafted web content may lead to an unexpected process crash.

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
AlmaLinux:8webkit2gtk32.52.4-1.el8_10ALSA-2026:25918
AlmaLinux:9webkit2gtk32.52.4-1.el9_8ALSA-2026:25927
AlmaLinux:8webkit2gtk3-devel2.52.4-1.el8_10ALSA-2026:25918
AlmaLinux:9webkit2gtk3-devel2.52.4-1.el9_8ALSA-2026:25927
AlmaLinux:8webkit2gtk3-jsc2.52.4-1.el8_10ALSA-2026:25918
AlmaLinux:9webkit2gtk3-jsc2.52.4-1.el9_8ALSA-2026:25927
AlmaLinux:8webkit2gtk3-jsc-devel2.52.4-1.el8_10ALSA-2026:25918
AlmaLinux:9webkit2gtk3-jsc-devel2.52.4-1.el9_8ALSA-2026:25927
Debian:12webkit2gtkno fix listedDEBIAN-CVE-2026-28953
Debian:13webkit2gtk2.52.5-1~deb13u1DEBIAN-CVE-2026-28953
Debian:14webkit2gtk2.52.4-1DEBIAN-CVE-2026-28953
Debian:12wpewebkitno fix listedDEBIAN-CVE-2026-28953
Debian:13wpewebkitno fix listedDEBIAN-CVE-2026-28953
Debian:14wpewebkit2.52.4-1DEBIAN-CVE-2026-28953
Rocky Linux:8webkit2gtk30:2.52.4-1.el8_10RLSA-2026:25918
Rocky Linux:9webkit2gtk30:2.52.4-1.el9_8RLSA-2026:25927
Ubuntu:22.04:LTSqtwebkit-opensource-srcno fix listedUBUNTU-CVE-2026-28953
Ubuntu:24.04:LTSqtwebkit-opensource-srcno fix listedUBUNTU-CVE-2026-28953
Ubuntu:22.04:LTSwebkit2gtkno fix listedUBUNTU-CVE-2026-28953
Ubuntu:24.04:LTSwebkit2gtk2.52.6-0ubuntu0.24.04.1USN-8703-1
Ubuntu:24.04:LTSwebkit2gtk2.52.6-0ubuntu0.24.04.1UBUNTU-CVE-2026-28953
Ubuntu:26.04:LTSwebkit2gtk2.52.6-0ubuntu0.26.04.1USN-8703-1
Ubuntu:26.04:LTSwebkit2gtk2.52.6-0ubuntu0.26.04.1UBUNTU-CVE-2026-28953
Ubuntu:22.04:LTSwpewebkitno fix listedUBUNTU-CVE-2026-28953

Affected products (as reported)

VendorProductVersions
Apple Safari 0 – before 26.5
Apple iOS and iPadOS 0 – before 18.7.90 – before 26.5
Apple macOS 0 – before 26.5
Apple tvOS 0 – before 26.5
Apple visionOS 0 – before 26.5
Apple watchOS 0 – before 26.5

Weakness: CWE-119, CWE-120 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

References