The issue was addressed with improved memory handling. (CVE-2026-43663)
CVE-2026-43663 is a medium severity vulnerability in Safari, iOS, iPadOS, and macOS Tahoe that was addressed by improved memory handling. The flaw could cause an unexpected process crash when processing maliciously crafted web content. The issue is fixed in version 26.5.2 of Safari, iOS, iPadOS, and macOS Tahoe.
AI Analysis
Technical Summary
This vulnerability (CVE-2026-43663) involves improper memory handling in Safari, iOS, iPadOS, and macOS Tahoe, which could lead to an unexpected process crash when processing specially crafted web content. The issue is classified under CWE-119 (Improper Restriction of Operations within the Bounds of a Memory Buffer). It has a CVSS v3.1 score of 6.5 (medium severity) with network attack vector, low attack complexity, no privileges required, user interaction required, and impacts availability only. The vulnerability has been fixed in Safari 26.5.2, iOS 26.5.2, iPadOS 26.5.2, and macOS Tahoe 26.5.2 by improving memory handling.
Potential Impact
Successful exploitation of this vulnerability may cause an unexpected process crash, resulting in a denial of service condition. There is no impact on confidentiality or integrity. No known exploits are reported in the wild.
Mitigation Recommendations
A fix is available in Safari 26.5.2, iOS 26.5.2, iPadOS 26.5.2, and macOS Tahoe 26.5.2. Users and administrators should update to these versions to remediate the vulnerability.
The issue was addressed with improved memory handling. (CVE-2026-43663)
Description
CVE-2026-43663 is a medium severity vulnerability in Safari, iOS, iPadOS, and macOS Tahoe that was addressed by improved memory handling. The flaw could cause an unexpected process crash when processing maliciously crafted web content. The issue is fixed in version 26.5.2 of Safari, iOS, iPadOS, and macOS Tahoe.
CVSS v3.1
Score 6.5medium
Affected software
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability (CVE-2026-43663) involves improper memory handling in Safari, iOS, iPadOS, and macOS Tahoe, which could lead to an unexpected process crash when processing specially crafted web content. The issue is classified under CWE-119 (Improper Restriction of Operations within the Bounds of a Memory Buffer). It has a CVSS v3.1 score of 6.5 (medium severity) with network attack vector, low attack complexity, no privileges required, user interaction required, and impacts availability only. The vulnerability has been fixed in Safari 26.5.2, iOS 26.5.2, iPadOS 26.5.2, and macOS Tahoe 26.5.2 by improving memory handling.
Potential Impact
Successful exploitation of this vulnerability may cause an unexpected process crash, resulting in a denial of service condition. There is no impact on confidentiality or integrity. No known exploits are reported in the wild.
Mitigation Recommendations
A fix is available in Safari 26.5.2, iOS 26.5.2, iPadOS 26.5.2, and macOS Tahoe 26.5.2. Users and administrators should update to these versions to remediate the vulnerability.
Technical Details
- Gcve Source
- db.gcve.eu
- Osv Id
- GHSA-h545-qxq5-vpjg
- Osv Schema Version
- 1.4.0
- Aliases
- ["CVE-2026-43663"]
- Ecosystems
- []
- Database Specific Severity
- MODERATE
- Cvss Version
- 3.1
Threat ID: 6a83aa84bf8831d539e3396b
Added to database: 08/18/2026, 00:42:44 UTC
Last enriched: 08/18/2026, 00:57:25 UTC
Last updated: 08/18/2026, 01:01:14 UTC
Views: 4
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