CVE-2026-20644
The issue was addressed with improved memory handling. This issue is fixed in Safari 26.3, iOS 18.7.5 and iPadOS 18.7.5, iOS 26.3 and iPadOS
CVSS
6.5
Medium
EPSS
0.3%
p22
KEV
—
Exploit Today
7
0-100
Published: Feb 11, 2026 · Last modified: Jul 15, 2026 · CWE-119 · CWE-416 · CWE-787
0.3%EPSS · 30 days0.3%
2026-08-102026-09-07
The issue was addressed with improved memory handling. This issue is fixed in Safari 26.3, iOS 18.7.5 and iPadOS 18.7.5, iOS 26.3 and iPadOS 26.3, macOS Tahoe 26.3, visionOS 26.3. Processing maliciously crafted web content may lead to an unexpected process crash.
- support.apple.comhttps://support.apple.com/en-us/126346
- support.apple.comhttps://support.apple.com/en-us/126347
- support.apple.comhttps://support.apple.com/en-us/126348
- support.apple.comhttps://support.apple.com/en-us/126353
- support.apple.comhttps://support.apple.com/en-us/126354
- access.redhat.comhttps://access.redhat.com/errata/RHSA-2026:10702
- access.redhat.comhttps://access.redhat.com/errata/RHSA-2026:11329
- access.redhat.comhttps://access.redhat.com/errata/RHSA-2026:11814
- access.redhat.comhttps://access.redhat.com/errata/RHSA-2026:13845
- access.redhat.comhttps://access.redhat.com/errata/RHSA-2026:14659
- access.redhat.comhttps://access.redhat.com/errata/RHSA-2026:16056
- access.redhat.comhttps://access.redhat.com/errata/RHSA-2026:16695
- access.redhat.comhttps://access.redhat.com/errata/RHSA-2026:19206
- access.redhat.comhttps://access.redhat.com/errata/RHSA-2026:19535
- access.redhat.comhttps://access.redhat.com/errata/RHSA-2026:22136
- access.redhat.comhttps://access.redhat.com/errata/RHSA-2026:9692
- access.redhat.comhttps://access.redhat.com/security/cve/CVE-2026-20644
- bugzilla.redhat.comhttps://bugzilla.redhat.com/show_bug.cgi?id=2448792
- security.access.redhat.comhttps://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-20644.json
CVECVSSEPSSKEVRExploitTitleMod.
CVE-2026-853607.0 HIG—
———Use after free in Windows Kernel allows an authorized attacker to elevate privileges locally.2hCVE-2026-839978.1 HIG—
———Use after free in Windows Message Queuing allows an unauthorized attacker to execute code over a network.2hCVE-2026-839797.8 HIG—
———Use after free in Windows Biometric Service allows an authorized attacker to elevate privileges locally.2hCVE-2026-839687.8 HIG—
———Use after free in Windows Biometric Service allows an authorized attacker to elevate privileges locally.2hCVE-2026-839407.0 HIG—
———Use after free in Windows Device Association Service allows an authorized attacker to elevate privileges locally.2hCVE-2026-819547.8 HIG—
———Use after free in Microsoft Office Excel allows an unauthorized attacker to execute code locally.2h