CVE-2025-43438: Use After Free

Published Nov 3, 2025
·
Updated

A use-after-free issue was addressed with improved memory management. This issue is fixed in Safari 26.1, iOS 18.7.2 and iPadOS 18.7.2, iOS 26.1 and iPadOS 26.1, macOS Tahoe 26.1, visionOS 26.1, watchOS 26.1. Processing maliciously crafted web content may lead to an unexpected Safari crash.

Other sources

A use-after-free issue was addressed with improved memory management. This issue is fixed in watchOS 26.1, macOS Tahoe 26.1, iOS 26.1 and iPadOS 26.1, Safari 26.1, iOS 18.7.2 and iPadOS 18.7.2, visionOS 26.1. Processing maliciously crafted web content may lead to an unexpected Safari crash.

— Red Hat

Accessibility. A permissions issue was addressed with additional restrictions.

— Apple

Admin Framework. A logic issue was addressed with improved checks.

— Apple

Admin Framework. The issue was addressed with improved checks.

— Apple

App Store. A logging issue was addressed with improved data redaction.

— Apple

Credit

Ron Masas(BreakPoint), Pinak Oza, an anonymous researcher, Gergely Kalman@@gergely_kalman, Hikerell (Loadshine Lab), Zhongcheng Li(IES Red Team of ByteDance), Hossein Lotfi@@hosselot(Trend Micro Zero Day Initiative), iisBuri, Apple, Cristian Dinca (icmd.tech), Dave G.(supernetworks), Alex Radocea(supernetworks), Taavi Eomäe(Zone Media), Romain Lebesle(Khatima), Himanshu Bharti@@Xpl0itme(Khatima), Dalibor Milanovic, @@RenwaX23, Stanislav Jelezoglo, Aleksejs Popovs, Phil Beauvoir, Google Big Sleep, Nan Wang@@eternalsakura13, rheza@@ginggilBesel(Trend Micro Zero Day Initiative), shandikri(Trend Micro Zero Day Initiative), Gary Kwong(Trend Micro Zero Day Initiative), Justin Cohen(Google), Tom Van Goethem, JZ, Duy Trần@@khanhduytran0, pattern-f@@pattern_F_, Michael DePlante@@izobashi(Trend Micro Zero Day Initiative), Kirin@@Pwnrin, Gary Kwong, rheza@@ginggilBesel, Lehan Dilusha Jayasinghe, Dennis Briner, Minghao Lin@@Y1nKoc, Lyutoon@@Lyutoon_, YingQi Shi@@Mas0n, BynarIO AI (bynar.io), Joshua Thomas, 이동하 (Lee Dong Ha(BoB 14th), Ryan Dowd@@_rdowd, Asaf Cohen, Mickey Jin@@patch1t, Joseph Ravichandran@@0xjprx(MIT CSAIL), Dave G. (supernetworks.org), Csaba Fitzl@@theevilbit(Kandji), Wojciech Regula(SecuRing), Kirin@@Pwnrin(Fudan University), LFY@@secsys(Fudan University), wac(Trend Micro Zero Day Initiative), Adwiteeya Agrawal, Kenneth Chew, Rodolphe Brunetti@@eisw0lf(Lupus Nova), Rodolphe BRUNETTI@@eisw0lf(Lupus Nova), @@EthanArbuckle, Ferdous Saljooki@@malwarezoo(Jamf), Murray Mike, Google Threat Analysis Group, Doug Hogan, KPC(Cisco Talos), CVE-2024-43398, CVE-2024-49761, CVE-2025-6442, Zhongquan Li@@Guluisacat, Vivek Dhar, ASI (RM) in Border Security Force, FTR HQ BSF Kashmir, Nikolai Skliarenko(Trend Micro Zero Day Initiative), an anonymous researcher(Microsoft), Kirin@@Pwnrin(Microsoft), Jonathan Bar Or@@yo_yo_yo_jbo(Microsoft), Amy@@asentientbot, CVE-2025-32462, CVE-2025-53906, Wang Yu(Cyberserval), @@cloudlldb, Morris Richman@@morrisinlife, Rosyna Keller(Totally Not Malicious Software), Lukaah Marlowe, Isaiah Wan, Will Caine, Thomas Salomon, Sufiyan Gouri (TU Darmstadt), Phil Scott & Richard Hyunho Im (@richeeta)@@MrPeriPeri, Mark Bowers, Joey Hewitt, Dylan Rollins, Arthur Baudoin, Andr.Ess, Mikael Kinnman

Affected Software

32 affected componentsFixes available
Apple WatchOS<26.1
26.1
Apple visionOS<26.1
26.1
Apple Safari<26.1
26.1
Apple iOS<26.1
26.1
Apple iPadOS<26.1
26.1
Apple iOS<18.7.2
18.7.2
Apple iPadOS<18.7.2
18.7.2
Apple macOS Tahoe<26.1
26.1
Apple Safari<26.1
Apple iPadOS<26.1
Apple iPhone OS<26.1
Apple visionOS<26.1
Apple WatchOS<26.1
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/wpewebkit*
ubuntu/qtwebkit-opensource-src*
ubuntu/webkit2gtk<2.50.2-0ubuntu0.22.04.2
2.50.2-0ubuntu0.22.04.2
ubuntu/wpewebkit*
ubuntu/qtwebkit-opensource-src*
ubuntu/webkit2gtk<2.50.2-0ubuntu0.24.04.2
2.50.2-0ubuntu0.24.04.2
ubuntu/webkit2gtk<2.50.2-0ubuntu0.25.10.2
2.50.2-0ubuntu0.25.10.2
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 26.1
  2. Upgrade

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

    Fixed in 18.7.2
  3. Upgrade

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

    Fixed in 2.50.2-0ubuntu0.22.04.2
  4. Upgrade

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

    Fixed in 2.50.2-0ubuntu0.24.04.2
  5. Upgrade

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

    Fixed in 2.50.2-0ubuntu0.25.10.2
  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 26.1
  9. Upgrade

    Upgrade iOS to a version that resolves this vulnerability.

    Fixed in 18.7.2
  10. Upgrade

    Upgrade iOS to a version that resolves this vulnerability.

    Fixed in 26.1
  11. Upgrade

    Upgrade iPadOS to a version that resolves this vulnerability.

    Fixed in 18.7.2
  12. Upgrade

    Upgrade iPadOS to a version that resolves this vulnerability.

    Fixed in 26.1
  13. Upgrade

    Upgrade macOS Tahoe to a version that resolves this vulnerability.

    Fixed in 26.1
  14. Upgrade

    Upgrade visionOS to a version that resolves this vulnerability.

    Fixed in 26.1
  15. Upgrade

    Upgrade watchOS to a version that resolves this vulnerability.

    Fixed in 26.1

Event History

Nov 3, 2025
Data Sourced
via Apple·12:00 AM
DescriptionWeaknessAffected Software
Nov 4, 2025
CVE Published
via Ubuntu·12:00 AM
Data Sourced
via Ubuntu·12:00 AM
RemedyDescriptionSeverityAffected Software
CVE Published
via MITRE·01:16 AM
Data Sourced
via MITRE·01:16 AM
DescriptionWeakness
Data Sourced
via OSV·02:15 AM
DescriptionSeverityAffected Software
Data Sourced
via NVD·02:15 AM
DescriptionSeverityWeaknessAffected Software
Mar 18, 2026
Data Sourced
via Red Hat·08:12 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-2025-43438?

CVE-2025-43438 is considered a critical vulnerability due to its potential to cause crashes in Safari.

2

How do I fix CVE-2025-43438?

To fix CVE-2025-43438, update your device to watchOS 26.1, iOS 26.1, iPadOS 26.1, visionOS 26.1, or Safari 26.1.

3

Which products are affected by CVE-2025-43438?

CVE-2025-43438 affects Apple devices running watchOS, iOS, iPadOS, visionOS, and Safari versions prior to 26.1.

4

What kind of issue is described in CVE-2025-43438?

CVE-2025-43438 describes a use-after-free vulnerability that can lead to unexpected crashes in Safari.

5

Is there a workaround for CVE-2025-43438?

There is no effective workaround for CVE-2025-43438; updating to the latest version is recommended.

Company

Resources

Contact

SecAlerts Pty Ltd.
132 Wickham Terrace
Fortitude Valley,
QLD 4006, Australia
info@secalerts.co
By using SecAlerts services, you agree to our services end-user license agreement. This website is safeguarded by reCAPTCHA and governed by the Google Privacy Policy and Terms of Service. All names, logos, and brands of products are owned by their respective owners, and any usage of these names, logos, and brands for identification purposes only does not imply endorsement. If you possess any content that requires removal, please get in touch with us.
© 2026 SecAlerts Pty Ltd.
ABN: 70 645 966 203, ACN: 645 966 203