A use-after-free issue was addressed with improved memory management. (CVE-2026-43727)
CVE-2026-43727 is a use-after-free vulnerability in Safari and related Apple operating systems that was addressed by improved memory management. The flaw could cause Safari to crash when processing maliciously crafted web content. The issue is fixed in Safari 26.5.2, iOS 26.5.2, iPadOS 26.5.2, and macOS Tahoe 26.5.2. This vulnerability has a CVSS score of 6.5, indicating a medium severity level.
AI Analysis
Technical Summary
This vulnerability (CVE-2026-43727) involves a use-after-free condition in Safari and Apple OS platforms, which was mitigated by improved memory management. Exploiting this flaw by processing specially crafted web content may lead to an unexpected crash of the Safari browser, causing denial of service. The issue is resolved in Safari 26.5.2, iOS 26.5.2, iPadOS 26.5.2, and macOS Tahoe 26.5.2.
Potential Impact
Successful exploitation results in an unexpected crash of Safari, leading to denial of service. There is no indication of confidentiality or integrity impact. The vulnerability requires user interaction (UI:R) and network attack vector (AV:N).
Mitigation Recommendations
Apply the official patches by updating to Safari 26.5.2, iOS 26.5.2, iPadOS 26.5.2, and macOS Tahoe 26.5.2. These updates include improved memory management that addresses the use-after-free issue. No additional mitigation steps are indicated.
A use-after-free issue was addressed with improved memory management. (CVE-2026-43727)
Description
CVE-2026-43727 is a use-after-free vulnerability in Safari and related Apple operating systems that was addressed by improved memory management. The flaw could cause Safari to crash when processing maliciously crafted web content. The issue is fixed in Safari 26.5.2, iOS 26.5.2, iPadOS 26.5.2, and macOS Tahoe 26.5.2. This vulnerability has a CVSS score of 6.5, indicating a medium severity level.
CVSS v3.1
Score 6.5medium
Affected software
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability (CVE-2026-43727) involves a use-after-free condition in Safari and Apple OS platforms, which was mitigated by improved memory management. Exploiting this flaw by processing specially crafted web content may lead to an unexpected crash of the Safari browser, causing denial of service. The issue is resolved in Safari 26.5.2, iOS 26.5.2, iPadOS 26.5.2, and macOS Tahoe 26.5.2.
Potential Impact
Successful exploitation results in an unexpected crash of Safari, leading to denial of service. There is no indication of confidentiality or integrity impact. The vulnerability requires user interaction (UI:R) and network attack vector (AV:N).
Mitigation Recommendations
Apply the official patches by updating to Safari 26.5.2, iOS 26.5.2, iPadOS 26.5.2, and macOS Tahoe 26.5.2. These updates include improved memory management that addresses the use-after-free issue. No additional mitigation steps are indicated.
Technical Details
- Gcve Source
- db.gcve.eu
- Osv Id
- GHSA-7gjf-r94h-p24f
- Osv Schema Version
- 1.4.0
- Aliases
- ["CVE-2026-43727"]
- Ecosystems
- []
- Database Specific Severity
- MODERATE
- Cvss Version
- 3.1
Threat ID: 6a83aa80bf8831d539e3302b
Added to database: 08/18/2026, 00:42:40 UTC
Last enriched: 08/18/2026, 00:57:40 UTC
Last updated: 08/18/2026, 01:52:18 UTC
Views: 4
Community Reviews
0 reviewsCrowdsource mitigation strategies, share intel context, and vote on the most helpful responses. Sign in to add your voice and help keep defenders ahead.
Want to contribute mitigation steps or threat intel context? Sign in or create an account to join the community discussion.
Actions
Updates to AI analysis require Pro Console access. Upgrade inside Console → Billing.
Need more coverage?
Upgrade to Pro Console for AI refresh and higher limits.
For incident response and remediation, OffSeq services can help resolve threats faster.
Latest Threats
Check if your credentials are on the dark web
Instant breach scanning across billions of leaked records. Free tier available.