CVE-2026-43658
Medium
Elevated severity or exploit probability.
CVSS base
7.5
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
EPSS — probability of exploitation (30 days)
0.3%
24.9th percentile
CISA KEV
Not listed
Weakness / dates
CWE-120
Published 2026-05-11 · modified 2026-08-17
CVSS breakdown
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
| Attack Vector | N | Network |
| Attack Complexity | L | Low |
| Privileges Required | N | None |
| User Interaction | N | None |
| Scope | U | Unchanged |
| Confidentiality | H | High |
| Integrity | N | None |
| Availability | N | None |
Timeline
- 2026-05-11 — Published (NVD)
- 2026-08-17 — Last modified (NVD)
Description
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.
Affected
References
- https://support.apple.com/en-us/127110
- https://support.apple.com/en-us/127115
- https://support.apple.com/en-us/127118
- https://support.apple.com/en-us/127119
- https://support.apple.com/en-us/127120
- https://support.apple.com/en-us/127121
- https://support.apple.com/en-us/148287
- https://access.redhat.com/errata/RHSA-2026:25918
- https://access.redhat.com/errata/RHSA-2026:25927
- https://access.redhat.com/errata/RHSA-2026:27728
- https://access.redhat.com/errata/RHSA-2026:27785
- https://access.redhat.com/errata/RHSA-2026:27804
- https://access.redhat.com/errata/RHSA-2026:28114
- https://access.redhat.com/errata/RHSA-2026:28146
- https://access.redhat.com/errata/RHSA-2026:28147
- https://access.redhat.com/errata/RHSA-2026:28148
- https://access.redhat.com/security/cve/CVE-2026-43658
- https://bugzilla.redhat.com/show_bug.cgi?id=2483968
- https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-43658.json