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Apple Safari CVE-2026-43716

| EUVDEUVD-2026-40218 MEDIUM
Buffer Overflow (CWE-119)
2026-06-29 apple GHSA-qr57-p9qq-f4x8
Buffer Overflow Apple Red Hat Ios And Ipados Suse
6.5
CVSS 3.1 · Vendor: apple
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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

Web-delivered content requires no credentials but demands user navigation (UI:R); impact is crash-only with no confidentiality or integrity consequence 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
SUSE
HIGH
qualitative
Red Hat
6.5 MEDIUM
qualitative

Primary rating from Vendor (apple).

CVSS VectorVendor: apple

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 - 22:42 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
UNKNOWN (no severity yet)
CVE Published
Jun 29, 2026 - 19:43 cve.org
MEDIUM 6.5

DescriptionCVE.org

The issue was addressed with improved memory handling. 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

Memory corruption (CWE-119) in Apple Safari's web content processing engine causes an unexpected application crash when rendering maliciously crafted web content. Affected across Safari, iOS 26, iPadOS 26, and macOS Tahoe - all versions prior to 26.5.2. An unauthenticated remote attacker can trigger a denial-of-service against any user who visits a hostile page, though no code execution is indicated by current data. No public exploit code and no CISA KEV listing are identified at time of analysis; exploitation probability (EPSS) was not provided in source data.

Technical ContextAI

CWE-119 (Improper Restriction of Operations within the Bounds of a Memory Buffer) indicates the root cause is a buffer boundary violation - likely an out-of-bounds read or write - within Apple's WebKit-based web content rendering pipeline. CPE data confirms the affected products span three Apple platforms: cpe:2.3:a:apple:safari, cpe:2.3:a:apple:ios_and_ipados, and cpe:2.3:a:apple:macos, all versions below 26.5.2. The 'Buffer Overflow' tag corroborates CWE-119. Apple's fix description - 'improved memory handling' - is characteristic of WebKit memory-safety patches, where crafted HTML, JavaScript, or media content can overflow or underrun internal buffers during parsing or rendering, resulting in a process crash. Because Safari on iOS and iPadOS is the only permitted browser engine on those platforms, this flaw has a unique reach across Apple's entire mobile ecosystem.

RemediationAI

Vendor-released patch: Safari 26.5.2, iOS 26.5.2, iPadOS 26.5.2, and macOS Tahoe 26.5.2. Apply the relevant update immediately via System Settings > General > Software Update (macOS/iOS/iPadOS) or via iTunes/Finder for managed devices. Apple's advisories at https://support.apple.com/en-us/127594, https://support.apple.com/en-us/127595, and https://support.apple.com/en-us/127685 detail the fix. If immediate patching is not possible, a compensating control is to restrict user access to untrusted or unvetted web content - for example, deploying a content filtering proxy or web isolation gateway to intercept potentially hostile pages before they reach Safari. Note that on iOS and iPadOS, all third-party browsers also use the WebKit engine, so switching browsers on those platforms does not mitigate exposure. For enterprise-managed fleets, use MDM (e.g., Jamf, Microsoft Intune for Apple) to push the update at scale.

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Vendor StatusVendor

SUSE

Severity: Important
Product Status
SUSE Liberty Linux 8 Fixed
SUSE Liberty Linux 9 Fixed
SUSE Linux Enterprise High Performance Computing 15 SP4-ESPOS Affected
SUSE Linux Enterprise High Performance Computing 15 SP4-LTSS Affected
SUSE Linux Enterprise High Performance Computing 15 SP5-ESPOS Affected

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CVE-2026-43716 vulnerability details – vuln.today
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