Skip to main content

Apple Safari CVE-2026-43720

| EUVDEUVD-2026-40217 MEDIUM
Use After Free (CWE-416)
2026-06-29 apple GHSA-wvfc-f72q-gqc3
Memory Corruption Apple Denial Of Service Use After Free Ios And Ipados
6.5
CVSS 3.1 · Vendor: apple
Share

Severity by source

Vendor (apple) PRIMARY
6.5 MEDIUM
AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
vuln.today AI
6.5 MEDIUM

Network-delivered web content requires active user visit (UI:R); crash is availability-only with no confidentiality or integrity impact confirmed.

3.1 AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
4.0 AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N

Primary rating from Vendor (apple).

CVSS VectorVendor: apple

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
Required
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High

Lifecycle Timeline

5
Analysis Generated
Jun 29, 2026 - 22:41 vuln.today
CVSS changed
Jun 29, 2026 - 22:22 NVD
6.5 (MEDIUM)
Patch available
Jun 29, 2026 - 22:02 EUVD
CVE Published
Jun 29, 2026 - 19:43 cve.org
MEDIUM 6.5
CVE Published
Jun 29, 2026 - 19:43 cve.org
UNKNOWN (no severity yet)

DescriptionCVE.org

A use-after-free issue was addressed with improved memory management. This issue is fixed in Safari 26.5.2, iOS 26.5.2 and iPadOS 26.5.2, macOS Tahoe 26.5.2. Processing maliciously crafted web content may lead to an unexpected Safari crash.

AnalysisAI

Use-after-free memory corruption in Safari's web content rendering engine causes a denial-of-service crash on Apple platforms running Safari, iOS/iPadOS, and macOS Tahoe prior to version 26.5.2. An attacker who can lure a victim to visit a maliciously crafted webpage can reliably crash the Safari browser, with no code execution or data exfiltration indicated by the available CVSS impact scores (C:N/I:N). …

Unlock full vulnerability intelligence

  • Risk assessment & exploitation conditions
  • Attack chain visualization
  • Remediation with exact patch versions
  • Threat intelligence from 22 sources
  • Personal watchlist & email alerts
Continue with Google Continue with GitHub

Free forever · No credit card required

Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata

Access
Host maliciously crafted webpage
Delivery
Lure victim to visit URL via phishing or ad injection
Exploit
Safari loads and parses crafted web content
Execution
Use-after-free triggered in WebKit rendering engine
Impact
Safari crashes (denial of service)
Sign in to reveal

Vulnerability AssessmentAI

Exploitation Exploitation requires the victim to actively visit or be redirected to a page hosting maliciously crafted web content in an unpatched Safari browser (UI:R). … Additional conditions and limiting factors are described in the full assessment.
Risk Assessment The CVSS 3.1 score of 6.5 (AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H) accurately reflects a remotely triggerable browser crash requiring only a single user interaction - visiting a malicious page. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in.
Exploit Scenario An attacker registers or compromises a website and embeds specially crafted web content - such as malformed HTML, JavaScript, or media assets - designed to trigger the use-after-free condition in Safari's rendering engine. A victim browsing to that page with an unpatched Safari version experiences an abrupt browser crash. …
Remediation Apply vendor-released patches immediately: update to Safari 26.5.2, iOS and iPadOS 26.5.2, or macOS Tahoe 26.5.2 as applicable. … Detailed patch versions, workarounds, and compensating controls in full report.
Sign in to read full assessment

Threat intelligence, references, and detailed analysis are available after sign-in.

More in Ios And Ipados

View all
CVE-2026-39868 CRITICAL
9.1 Jun 29

Kernel memory corruption in Apple iOS/iPadOS (before 26.5.2) and macOS Tahoe (before 26.5.2) allows a malicious or compr
CVE-2026-43715 HIGH
8.8 Jun 29

Memory corruption in Apple's WebKit browser engine (Safari and the system WebView on iOS, iPadOS, and macOS before 26.5.
CVE-2026-43705 HIGH
8.8 Jun 29

Memory corruption via type confusion in Apple's WebKit browser engine allows attackers to corrupt memory by luring a vic
CVE-2026-43731 HIGH
8.8 Jun 29

Memory corruption via use-after-free in Apple's WebKit browser engine allows remote attackers to corrupt memory when a v
CVE-2026-28847 HIGH
8.8 May 11

Memory-corruption crash in Apple's WebKit web-content engine lets a malicious website terminate the content-rendering pr
CVE-2026-28955 HIGH
8.8 May 11

The issue was addressed with improved memory handling. This issue is fixed in iOS 18.7.9 and iPadOS 18.7.9, iOS 26.5 and
CVE-2026-28947 HIGH
8.8 May 11

Use-after-free in WebKit allows remote attackers to trigger Safari crashes and potentially achieve arbitrary code execut
CVE-2026-43735 HIGH
8.1 Jun 29

The issue was addressed with improved checks. This issue is fixed in Safari 26.5.2, iOS 26.5.2 and iPadOS 26.5.2, macOS

CVE-2026-28907 HIGH
8.1 May 11

Content Security Policy bypass in Apple's WebKit-based platforms (iOS, iPadOS, macOS Tahoe, tvOS, visionOS, watchOS) all
CVE-2026-43724 HIGH
7.8 Jun 29

Local privilege escalation and kernel memory corruption in Apple iOS, iPadOS (before 26.5.2) and macOS Tahoe (before 26.
CVE-2026-28904 HIGH
7.5 May 11

Memory corruption in WebKit across Apple's ecosystem enables confidentiality breach via malicious web content without us
CVE-2026-28953 HIGH
7.5 May 11

Information disclosure in Apple WebKit's web content processing engine allows remote attackers to read sensitive memory

Same weakness CWE-416 – Use After Free

View all
CVE-2019-0708 CRITICAL POC
9.8
CVE-2015-5119 CRITICAL POC
9.8
CVE-2014-0322 HIGH POC
8.8
CVE-2012-4792 HIGH POC
8.8
CVE-2009-4324 HIGH POC
7.8
CVE-2015-0313 CRITICAL POC
9.8
CVE-2015-5122 CRITICAL POC
9.8
CVE-2013-2551 HIGH POC
8.8

Same technique Memory Corruption

View all
CVE-2015-5119 CRITICAL POC
9.8
CVE-2015-3113 CRITICAL POC
9.8
CVE-2011-2462 CRITICAL POC
9.8
CVE-2011-0611 HIGH POC
8.8
CVE-2014-0322 HIGH POC
8.8
CVE-2012-1889 HIGH POC
8.8
CVE-2012-4792 HIGH POC
8.8
CVE-2010-3333 HIGH POC
7.8

Share

CVE-2026-43720 vulnerability details – vuln.today
Back

This site uses cookies essential for authentication and security. No tracking or analytics cookies are used. Privacy Policy