CVE-2025-43342: Input Validation

Published Sep 15, 2025
·
Updated

A correctness issue was addressed with improved checks. This issue is fixed in Safari 26, iOS 18.7 and iPadOS 18.7, iOS 26 and iPadOS 26, macOS Tahoe 26, tvOS 26, visionOS 26, watchOS 26. Processing maliciously crafted web content may lead to an unexpected process crash.

Other sources

A correctness issue was addressed with improved checks. This issue is fixed in tvOS 26, Safari 26, iOS 18.7 and iPadOS 18.7, visionOS 26, watchOS 26, macOS Tahoe 26, iOS 26 and iPadOS 26. Processing maliciously crafted web content may lead to an unexpected process crash.

— Red Hat

AirPort. A permissions issue was addressed with additional restrictions.

— Apple

AMD. A buffer overflow was addressed with improved bounds checking.

— Apple

AppKit. The issue was resolved by blocking unsigned services from launching on Intel Macs.

— Apple

Apple Neural Engine. An out-of-bounds access issue was addressed with improved bounds checking.

— Apple

Credit

Joey Hewitt, an anonymous researcher, Thomas Salomon, Sufiyan Gouri (TU Darmstadt), Phil Scott & Richard Hyunho Im (@richeeta)@@MrPeriPeri, Mark Bowers, Dylan Rollins, Arthur Baudoin, Andr.Ess, Jaydev Ahire, Big Bear, Pawel Wylecial(REDTEAM), Ignacio Sanmillan@@ulexec, Mike Cardwell(grepular), Bob Lord, @@RenwaX23, Evan Waelde, Mickey Jin@@patch1t, Hossein Lotfi@@hosselot(Trend Micro Zero Day Initiative), Michael Reeves@@IntegralPilot, Nikita Sakalouski, Csaba Fitzl@@theevilbit(Kandji), Rosyna Keller(Totally Not Malicious Software), Guilherme Rambo(Best Buddy Apps), Yinyi Wu@@_3ndy1(Dawn Security Lab of JD), @@zlluny(Trend Micro Zero Day Initiative), 이동하 (Lee Dong Ha)(SSA Lab), Keisuke Hosoda, Viktor Oreshkin, Philipp Baldauf, Minghao Lin@@Y1nKoc, Lyutoon@@Lyutoon_, YingQi Shi@@Mas0n, Dawuge(Shuffle Team), Tom Brzezinski, Abhay Kailasia@@abhay_kailasia(C), KPC(Cisco Talos), 정답이 아닌 해답, Richard Hyunho Im@@richeeta, Jiwon Park, Noah Gregory (wts.dev), CVE-2025-6965, JZ, Seo Hyun-gyu@@wh1te4ever, Luke Roberts@@rookuu, Rodolphe BRUNETTI@@eisw0lf(Lupus Nova), Kirin@@Pwnrin, ABC Research s.r.o., Nolan Astrein(Kandji), Mickey Jin@@patch1t(Cisco Talos), Kirin@@Pwnrin(Cisco Talos), Claudio Bozzato(Cisco Talos), Francesco Benvenuto(Cisco Talos), Zhongquan Li@@Guluisacat, Bilal Siddiqui, Zhongcheng Li(IES Red Team of ByteDance), Matej Moravec@@MacejkoMoravec, Shantanu Thakur, Wang Yu(Cyberserval), Anonymous(Trend Micro Zero Day Initiative), Jian Lee@@speedyfriend433, Yiğit Can YILMAZ@@yilmazcanyigit, Ye Zhang@@VAR10CK(Baidu Security), Nathaniel Oh@@calysteon, Gergely Kalman@@gergely_kalman, Hikerell (Loadshine Lab), Rodolphe Brunetti@@eisw0lf(Lupus Nova), LFY@@secsys(Fudan University), CVE-2025-40909, @@zlluny, CVE-2024-27280, Ye Zhang(Baidu Security), pattern-f@@pattern_F_, Kirin@@Pwnrin(Computer Science), Cristian Dinca(Computer Science), Romania, Ferdous Saljooki@@malwarezoo(Jamf), Justin Elliot Fu, Pyrophoria(GrapheneOS), an anonymous researcher(GrapheneOS), James J Kalafus, Michel Migdal, ken super

Affected Software

35 affected componentsFixes available
Apple iOS<26
26
Apple iPadOS<26
26
Apple Safari<26
26
Apple Safari<26.0
Apple iPadOS<18.7
Apple iPhone OS<18.7
Apple macOS<26.0
Apple tvOS<26.0
Apple visionOS<26.0
Apple WatchOS<26.0
WebKitGTK WebKitGTK<2.48.7
wpewebkit WPE WebKit<2.48.7
Apple macOS Tahoe<26
26
Apple iOS<18.7
18.7
Apple iPadOS<18.7
18.7
Apple tvOS<26
26
Apple WatchOS<26
26
Apple visionOS<26
26
ubuntu/qtwebkit-opensource-src*
ubuntu/webkit2gtk*
ubuntu/qtwebkit-source*
ubuntu/webkitgtk*
ubuntu/webkit2gtk*
ubuntu/qtwebkit-opensource-src*
ubuntu/qtwebkit-source*
ubuntu/webkitgtk*
ubuntu/webkit2gtk*
ubuntu/qtwebkit-opensource-src*
ubuntu/qtwebkit-opensource-src*
ubuntu/webkit2gtk<2.48.7-0ubuntu0.22.04.2
2.48.7-0ubuntu0.22.04.2
ubuntu/qtwebkit-opensource-src*
ubuntu/webkit2gtk<2.48.7-0ubuntu0.24.04.2
2.48.7-0ubuntu0.24.04.2
ubuntu/webkit2gtk<2.50.0-2ubuntu1
2.50.0-2ubuntu1
debian/webkit2gtk
2.50.6-1~deb12u22.50.6-1~deb12u12.52.6-1~deb13u12.54.0-1~deb13u32.52.6-12.54.2-2
debian/wpewebkit<=2.38.6-1, <=2.48.3-1
2.54.2-1

Remediation

Recommended actions to resolve this vulnerability, in priority order.

  1. Upgrade

    Upgrade to a fixed release to a version that resolves this vulnerability.

    Fixed in 26
  2. Upgrade

    Upgrade to a fixed release to a version that resolves this vulnerability.

    Fixed in 18.7
  3. Upgrade

    Upgrade ubuntu/webkit2gtk to a version that resolves this vulnerability.

    Fixed in 2.48.7-0ubuntu0.22.04.2
  4. Upgrade

    Upgrade ubuntu/webkit2gtk to a version that resolves this vulnerability.

    Fixed in 2.48.7-0ubuntu0.24.04.2
  5. Upgrade

    Upgrade ubuntu/webkit2gtk to a version that resolves this vulnerability.

    Fixed in 2.50.0-2ubuntu1
  6. Upgrade

    Upgrade debian/webkit2gtk to a version that resolves this vulnerability.

    Fixed in 2.50.6-1~deb12u2Fixed in 2.50.6-1~deb12u1Fixed in 2.52.6-1~deb13u1Fixed in 2.54.0-1~deb13u3Fixed in 2.52.6-1Fixed in 2.54.2-2
  7. Upgrade

    Upgrade debian/wpewebkit to a version that resolves this vulnerability.

    Fixed in 2.54.2-1
  8. Upgrade

    Upgrade Safari to a version that resolves this vulnerability.

    Fixed in 26
  9. Upgrade

    Upgrade iOS to a version that resolves this vulnerability.

    Fixed in 18.7
  10. Upgrade

    Upgrade iPadOS to a version that resolves this vulnerability.

    Fixed in 18.7
  11. Upgrade

    Upgrade iOS to a version that resolves this vulnerability.

    Fixed in 26
  12. Upgrade

    Upgrade iPadOS to a version that resolves this vulnerability.

    Fixed in 26
  13. Upgrade

    Upgrade macOS Tahoe to a version that resolves this vulnerability.

    Fixed in 26
  14. Upgrade

    Upgrade tvOS to a version that resolves this vulnerability.

    Fixed in 26
  15. Upgrade

    Upgrade visionOS to a version that resolves this vulnerability.

    Fixed in 26
  16. Upgrade

    Upgrade watchOS to a version that resolves this vulnerability.

    Fixed in 26

Event History

Sep 15, 2025
CVE Published
via Ubuntu·12:00 AM
Data Sourced
via Apple·12:00 AM
DescriptionWeaknessAffected Software
Data Sourced
via Ubuntu·12:00 AM
RemedyDescriptionSeverityAffected Software
CVE Published
via MITRE·10:35 PM
Data Sourced
via MITRE·10:35 PM
DescriptionWeakness
Data Sourced
via OSV·11:15 PM
DescriptionSeverityAffected Software
Data Sourced
via NVD·11:15 PM
DescriptionSeverityWeaknessAffected Software
Sep 23, 2025
Data Sourced
via Red Hat·02:24 PM
DescriptionSeverityAffected Software

Parent advisories

This vulnerability appears in the following advisories.

Peer vulnerabilities

Found alongside the following vulnerabilities.

Frequently Asked Questions

1

What is the severity of CVE-2025-43342?

The severity of CVE-2025-43342 is considered significant due to multiple vulnerabilities including buffer overflow and permission issues.

2

How do I fix CVE-2025-43342?

To fix CVE-2025-43342, ensure that your device is updated to the latest version of macOS Tahoe, tvOS, iOS, iPadOS, watchOS, or visionOS.

3

Which Apple products are affected by CVE-2025-43342?

CVE-2025-43342 affects several Apple products including macOS Tahoe, tvOS, iOS, iPadOS, watchOS, and visionOS.

4

What vulnerabilities does CVE-2025-43342 address?

CVE-2025-43342 addresses vulnerabilities related to permissions issues, buffer overflow, and out-of-bounds access.

5

Is there a workaround for CVE-2025-43342?

There are currently no documented workarounds for CVE-2025-43342; updating your software is the recommended action.

Company

Resources

Contact

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