CVE-2026-43676
published 2026-06-29CVE-2026-43676: An out-of-bounds access issue was addressed with improved bounds checking. This issue is fixed in Safari 26.5.2, iOS 18.7.10 and iPadOS 18.7.10, iOS 26.5.2 and…
PriorityP433medium6.5CVSS 3.1
AVNACLPRNUIRSUCNINAH
EPSS
0.47%
38.7th percentile
An out-of-bounds access issue was addressed with improved bounds checking. This issue is fixed in Safari 26.5.2, iOS 18.7.10 and iPadOS 18.7.10, iOS 26.5.2 and iPadOS 26.5.2, macOS Tahoe 26.5.2, visionOS 26.6, watchOS 26.6. Processing maliciously crafted web content may lead to an unexpected Safari crash.
Affected
9 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| apple | ios_and_ipados | < 18.7.10 | 18.7.10 |
| apple | ios_and_ipados | < 26.5.2 | 26.5.2 |
| apple | ipados | < 26.5.2 | 26.5.2 |
| apple | iphone_os | < 26.5.2 | 26.5.2 |
| apple | macos | < 26.5.2 | 26.5.2 |
| apple | safari | < 26.5.2 | 26.5.2 |
| apple | visionos | < 26.6 | 26.6 |
| apple | watchos | < 26.6 | 26.6 |
| webkitgtk | webkitgtk | — | — |
CVSS provenance
nvdv3.16.5MEDIUMCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
vendor_redhat6.5MEDIUM
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VulDB
Apple Safari/iOS/iPadOS/macOS up to 26.5.1 Web out-of-bounds
vuldb·2026-06-30·CVSS 6.5
CVE-2026-43676 [MEDIUM] Apple Safari/iOS/iPadOS/macOS up to 26.5.1 Web out-of-bounds
A vulnerability was found in Apple Safari, iOS, iPadOS and macOS up to 26.5.1. It has been rated as problematic. This affects an unknown part of the component Web Handler. The manipulation leads to out-of-bounds read.
This vulnerability is uniquely identified as CVE-2026-43676. The attack is possible to be carried out remotely. No exploit exists.
Upgrading the affected component is advised.
GHSA
An out-of-bounds access issue was addressed with improved bounds checking.
ghsa_unreviewed·2026-06-29
CVE-2026-43676 [MEDIUM] CWE-125 An out-of-bounds access issue was addressed with improved bounds checking.
An out-of-bounds access issue was addressed with improved bounds checking. 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.
Red Hat
webkitgtk: webkitgtk: Maliciously crafted web content may cause unexpected process crash
vendor_redhat·2026-07-10·CVSS 6.5
CVE-2026-43676 [MEDIUM] CWE-125 webkitgtk: webkitgtk: Maliciously crafted web content may cause unexpected process crash
webkitgtk: webkitgtk: Maliciously crafted web content may cause unexpected process crash
An out-of-bounds access issue was addressed with improved bounds checking. 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.
A flaw was found in WebKitGTK. Processing maliciously crafted web content can trigger an out-of-bounds read due to improper bounds checking, resulting in an unexpected process crash.
Package: pywebkitgtk (Red Hat Enterprise Linux 6) - Out of support scope
Package: webkitgtk (Red Hat Enterprise Linux 6) - Out of support scope
Package: webkitgtk3 (Red Hat Enterprise Linux 7) - Out of support scope
Package: webkitgtk4 (Red Hat Enterprise Linux 7) - Out of su
No detection rules found.
No public exploits indexed.
Bugzilla
CVE-2026-43676 webkitgtk: webkitgtk: Maliciously crafted web content may cause unexpected process crash [epel-all]
bugzilla·2026-08-31·CVSS 6.5
CVE-2026-43676 [MEDIUM] CVE-2026-43676 webkitgtk: webkitgtk: Maliciously crafted web content may cause unexpected process crash [epel-all]
CVE-2026-43676 webkitgtk: webkitgtk: Maliciously crafted web content may cause unexpected process crash [epel-all]
Disclaimer: Community trackers are created by Red Hat Product Security team on a best effort basis. Package maintainers are required to ascertain if the flaw indeed affects their package, before starting the update process.
An out-of-bounds access issue was addressed with improved bounds checking.
Impact: maliciously crafted web content may cause unexpected Safari crash
Advisory: https://webkitgtk.org/security/WSA-2026-0004.html
WebKit Bug: https://bugs.webkit.org/show_bug.cgi?id=317231
Bugzilla
CVE-2026-43676 webkitgtk: webkitgtk: Maliciously crafted web content may cause unexpected process crash [fedora-all]
bugzilla·2026-08-31·CVSS 6.5
CVE-2026-43676 [MEDIUM] CVE-2026-43676 webkitgtk: webkitgtk: Maliciously crafted web content may cause unexpected process crash [fedora-all]
CVE-2026-43676 webkitgtk: webkitgtk: Maliciously crafted web content may cause unexpected process crash [fedora-all]
Disclaimer: Community trackers are created by Red Hat Product Security team on a best effort basis. Package maintainers are required to ascertain if the flaw indeed affects their package, before starting the update process.
An out-of-bounds access issue was addressed with improved bounds checking.
Impact: maliciously crafted web content may cause unexpected Safari crash
Advisory: https://webkitgtk.org/security/WSA-2026-0004.html
WebKit Bug: https://bugs.webkit.org/show_bug.cgi?id=317231
Bugzilla
CVE-2026-43676 webkitgtk: webkitgtk: Maliciously crafted web content may cause unexpected process crash
bugzilla·2026-07-14·CVSS 6.5
CVE-2026-43676 [MEDIUM] CVE-2026-43676 webkitgtk: webkitgtk: Maliciously crafted web content may cause unexpected process crash
CVE-2026-43676 webkitgtk: webkitgtk: Maliciously crafted web content may cause unexpected process crash
An out-of-bounds access issue was addressed with improved bounds checking.
Impact: maliciously crafted web content may cause unexpected Safari crash
Advisory: https://webkitgtk.org/security/WSA-2026-0004.html
WebKit Bug: https://bugs.webkit.org/show_bug.cgi?id=317231
Sans Isc
Apple Patches iOS and macOS, (Mon, Aug 17th)
blogs_sans_isc·2026-08-17·CVSS 5.5
CVE-2026-28958 [MEDIUM] Apple Patches iOS and macOS, (Mon, Aug 17th)
Apple Patches iOS and macOS
Published: 2026-08-17. Last Updated: 2026-08-17 20:26:39 UTC
by Johannes Ullrich (Version: 1)
0 comment(s)
Apple today released updates for iOS/iPadOS (26 and 18) and macOS 26. This update fixes 108 vulnerabilities and comes about two weeks after the much smaller macOS update that addressed the single screen-sharing vulnerability. This vulnerability did not affect iOS/iPadOS.
None of the vulnerabilities has been exploited so far. There are a few WebKit vulnerabilities, but no standalone Safari patch for older operating systems. 87 of the vulnerabilities affect only iOS 18, making this more of an iOS 18 release than one for the newer operating systems. Only six vulnerabilities affect all three OSs released today. All 6 vulnerabilities affect WebKit.
Apple's
Sans Isc
Apple Patches Everything (July 2026), (Wed, Jul 29th)
blogs_sans_isc·2026-07-29·CVSS 5.5
CVE-2026-28849 [MEDIUM] Apple Patches Everything (July 2026), (Wed, Jul 29th)
Apple Patches Everything (July 2026)
Published: 2026-07-29. Last Updated: 2026-07-29 07:32:37 UTC
by Johannes Ullrich (Version: 1)
0 comment(s)
I am a bit late with this summary, but this week Apple released updates to all its operating systems and Safari. The Safari update, as usual, targets macOS prior to macOS 26. macOS updates covered the two older versions (14 and 15), while other operating system patches only covered the current 26 versions.
A total of 187 vulnerabilities are addressed in this update. Many cover multiple operating systems. Apple did not label any of the vulnerabilities as already being exploited.
Three vulnerabilities that caught my interest are CVE-2026-28849, CVE-2026-28900, and CVE-2026-28914. These issues appear to be the vulnerability described in https://m
Sans Isc
June 2026 Apple Updates, (Tue, Jun 30th)
blogs_sans_isc·2026-06-30·CVSS 9.1
CVE-2026-39868 [CRITICAL] June 2026 Apple Updates, (Tue, Jun 30th)
June 2026 Apple Updates
Published: 2026-06-30. Last Updated: 2026-06-30 09:31:27 UTC
by Johannes Ullrich (Version: 1)
0 comment(s)
Apple released updates for iOS/iPadOS, macOS, and Safari on Monday. There have been no updates for other Apple operating systems (visionOS, watchOS, tvOS). Usually, Apple updates all products at the same time.
Most of the vulnerabilities affect the web browser (WebKit, libxslt, WebRTC, and Web Extension). Only four of the vulnerabilities are not directly related to web content: Three Kernel issues and one vulnerability in the IOGPUFamily.
None of the vulnerabilities is labeled as "exploited".
iOS 26.5.2 and iPadOS 26.5.2 macOS Tahoe 26.5.2 Safari 26.5.2
CVE-2026-39868: An app may be able to cause unexpected system termination or corrupt kernel memory.
A
2026-06-29
Published