Skip to main content

Apple Safari CVE-2026-43707

| EUVDEUVD-2026-40206 MEDIUM
Buffer Overflow (CWE-119)
2026-06-29 apple GHSA-fpv3-789h-j3j4
Buffer Overflow Apple 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 with low complexity and no privileges, but the victim must load the malicious content (UI:R); impact is a crash, so only A:H.

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:P/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

7
Severity Changed
Jun 30, 2026 - 20:22 NVD
HIGH MEDIUM
CVSS changed
Jun 30, 2026 - 20:22 NVD
7.5 (HIGH) 6.5 (MEDIUM)
Analysis Generated
Jun 30, 2026 - 15:23 vuln.today
CVSS changed
Jun 30, 2026 - 15:22 NVD
7.5 (HIGH)
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
HIGH 7.5

DescriptionCVE.org

A memory corruption 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 process crash.

AnalysisAI

Denial-of-service memory corruption in Apple's WebKit engine affects Safari, iOS/iPadOS, and macOS Tahoe before version 26.5.2, where processing maliciously crafted web content triggers an unexpected process crash. The CVSS vector scores only availability impact (A:H) with no confidentiality or integrity loss, indicating a crash rather than code execution. There is no public exploit identified at time of analysis, and the EPSS probability is very low (0.16%), consistent with a browser-rendering DoS reported internally by Apple rather than an actively exploited threat.

Technical ContextAI

The flaw resides in WebKit, the browser engine underpinning Safari and all web-content rendering on Apple platforms (iOS, iPadOS, macOS). It is classified as CWE-119 (Improper Restriction of Operations within the Bounds of a Memory Buffer) and tagged as a Buffer Overflow, meaning the engine mishandles memory boundaries when parsing or rendering attacker-controlled web content. The CPE data confirms the issue spans three distinct Apple product surfaces - cpe:2.3:a:apple:safari, cpe:2.3:a:apple:ios_and_ipados, and cpe:2.3:a:apple:macos - because they share the same underlying WebKit code. Apple's fix description ('addressed with improved memory handling') indicates the corruption was remediated by hardening bounds/lifetime handling rather than a logic redesign.

RemediationAI

Vendor-released patch: update to Safari 26.5.2, iOS 26.5.2, iPadOS 26.5.2, and macOS Tahoe 26.5.2, which contain the improved memory handling fix; this is the primary and recommended action per 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. If immediate patching is not possible on managed fleets, reduce exposure by limiting browsing of untrusted sites and, on managed devices, applying content-filtering or web-proxy policies to block untrusted/unknown web content - note this degrades user browsing convenience and does not address content delivered via in-app WebKit views (WKWebView), which share the engine. Because impact is limited to a process crash with no confidentiality or integrity loss, emergency out-of-band action is generally not warranted; fold the update into the standard patch cycle.

More in Ios And Ipados

View all
CVE-2026-43723 HIGH POC
7.8 Jul 27

Local privilege escalation in Apple operating systems allows a malicious app to gain root privileges. The vulnerability,
CVE-2026-65414 CRITICAL
9.8 Sep 14

We need answer JSON only. Need carefully construct fields. Need follow instructions. Must use all data. Need risk_assess
CVE-2026-64771 CRITICAL
9.8 Jul 27

Memory corruption in multiple Apple operating systems allows remote attackers to trigger buffer overflows that may cause
CVE-2026-43803 CRITICAL
9.8 Jul 27

Remote system termination in multiple Apple operating systems (iOS, iPadOS, macOS, tvOS, visionOS, watchOS) can be trigg
CVE-2026-43810 CRITICAL
9.8 Jul 27

Remote memory corruption in the Apple operating-system kernel (shared XNU core across iOS/iPadOS 26.6, macOS Sequoia 15.
CVE-2026-64770 CRITICAL
9.8 Jul 27

Remote code execution in Apple operating systems prior to iOS/iPadOS 26.6, macOS Sequoia 15.7.8, macOS Sonoma 14.8.8, ma
CVE-2026-64769 CRITICAL
9.8 Jul 27

Heap-based buffer overflow in Apple iOS, iPadOS, macOS, tvOS, and visionOS allows remote attackers to cause unexpected a
CVE-2026-64774 CRITICAL
9.8 Jul 27

We are tasked to produce a JSON object with specific fields based on a CVE. We must synthesize multiple intelligence sou
CVE-2026-64772 CRITICAL
9.8 Jul 27

Remote code execution in Apple operating systems (iOS, iPadOS, macOS Sequoia, macOS Tahoe, tvOS, visionOS) stems from an
CVE-2026-43807 CRITICAL
9.8 Jul 27

Denial of service via unexpected app termination affects multiple Apple operating systems, including iOS, iPadOS, macOS,
CVE-2026-64733 CRITICAL
9.8 Jul 27

A data protection flaw in multiple Apple operating systems allows a locally-installed app to fingerprint the user. An at
CVE-2026-43799 CRITICAL
9.8 Jul 27

Denial-of-service (unexpected system termination) affects Apple's shared OS platforms - iOS/iPadOS before 26.6, macOS Se

Same weakness CWE-119 – Buffer Overflow

View all
CVE-2020-0796 CRITICAL POC
10.0
CVE-2017-11882 HIGH POC
7.8
CVE-2014-6332 HIGH POC
8.8
CVE-2015-2426 HIGH POC
8.8
CVE-2013-3918 HIGH POC
8.8
CVE-2023-4966 HIGH POC
7.5
CVE-2017-11774 HIGH POC
7.8
CVE-2013-3660 HIGH POC
7.8

Same technique Buffer Overflow

View all
CVE-2017-7269 CRITICAL POC
9.8
CVE-2015-5119 CRITICAL POC
9.8
CVE-2015-3113 CRITICAL POC
9.8
CVE-2011-2462 CRITICAL POC
9.8
CVE-2020-0796 CRITICAL POC
10.0
CVE-2019-11043 CRITICAL POC
9.8
CVE-2009-0927 HIGH POC
8.8
CVE-2012-1889 HIGH POC
8.8

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

Share

CVE-2026-43707 vulnerability details – vuln.today
Back

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