CVE-2026-43658CWE-119CWE-120

CVE-2026-43658

High · published May 12, 2026

CVSS v3.1
7.5
EPSS
1%
Percentile
44.8
In the wild
Unconfirmed
What it is

The issue was addressed with improved memory handling. This issue is fixed in Safari 26.5, iOS 18.7.10 and iPadOS 18.7.10, 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 Safari crash.

The record
Technical detail
CVSS v3.1
7.5 · HIGH
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
CVSS v4.0
Not supplied
EPSS
0.00543 · 44.8th percentile
Weaknesses
CWE-119 · Improper Restriction of Operations within the Bounds of a Memory Buffer; CWE-120 · Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')
Published
2026-05-12T01:19Z
Affected products (6)
ProductVersionsFixed in
apple/ipados< 26.526.5
apple/iphone_os< 26.526.5
apple/macos≥ 26.0, < 26.526.5
apple/tvos< 26.526.5
apple/visionos< 26.526.5
apple/watchos< 26.526.5
References (19)
https://support.apple.com/en-us/127110 · [email protected]https://support.apple.com/en-us/127115 · [email protected]https://support.apple.com/en-us/127118 · [email protected]https://support.apple.com/en-us/127119 · [email protected]https://support.apple.com/en-us/127120 · [email protected]https://support.apple.com/en-us/127121 · [email protected]https://support.apple.com/en-us/148287 · [email protected]https://access.redhat.com/errata/RHSA-2026:25918 · 0b0ca135-0b70-47e7-9f44-1890c2a1c46chttps://access.redhat.com/errata/RHSA-2026:25927 · 0b0ca135-0b70-47e7-9f44-1890c2a1c46chttps://access.redhat.com/errata/RHSA-2026:27728 · 0b0ca135-0b70-47e7-9f44-1890c2a1c46chttps://access.redhat.com/errata/RHSA-2026:27785 · 0b0ca135-0b70-47e7-9f44-1890c2a1c46chttps://access.redhat.com/errata/RHSA-2026:27804 · 0b0ca135-0b70-47e7-9f44-1890c2a1c46chttps://access.redhat.com/errata/RHSA-2026:28114 · 0b0ca135-0b70-47e7-9f44-1890c2a1c46chttps://access.redhat.com/errata/RHSA-2026:28146 · 0b0ca135-0b70-47e7-9f44-1890c2a1c46chttps://access.redhat.com/errata/RHSA-2026:28147 · 0b0ca135-0b70-47e7-9f44-1890c2a1c46chttps://access.redhat.com/errata/RHSA-2026:28148 · 0b0ca135-0b70-47e7-9f44-1890c2a1c46chttps://access.redhat.com/security/cve/CVE-2026-43658 · 0b0ca135-0b70-47e7-9f44-1890c2a1c46chttps://bugzilla.redhat.com/show_bug.cgi?id=2483968 · 0b0ca135-0b70-47e7-9f44-1890c2a1c46chttps://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-43658.json · 0b0ca135-0b70-47e7-9f44-1890c2a1c46c
EPSS history
Timeline
  • 11 MAY 20:08Z
    The issue was addressed with improved memory handling
    cvelistv5