CVE-2025-43343 Memory corruption in Safari
Critical 9.8
Published
Updated
Check this codebase for CVE-2025-43343 and fix it if it is affected.
What it is: CVE-2025-43343 is a critical memory corruption vulnerability in Apple Ipados, published on 15 Sep 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2025-43343 in the wild and no public exploit code.
Affected product: Apple Ipados. No package-level version data is available, so check the vendor advisory linked from the reference page.
Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.
Reference: https://insights.sbomify.com/CVE-2025-43343/ (Markdown: https://insights.sbomify.com/CVE-2025-43343/index.md)
Attackers can cause a browser crash by processing malicious web content, affecting users of Apple Safari and related operating systems.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2025-43343?
CVE-2025-43343 is a critical memory corruption vulnerability in Apple Ipados, published on 15 Sep 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
The issue was addressed with improved memory handling. This issue is fixed in Safari 26, 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.
Weakness: CWE-119
Which versions are affected by CVE-2025-43343?
It affects 9 products.
Linux distribution packages (40)
webkit2gtk3 AlmaLinux:8 | All versions | 2.50.1-1.el8_10 |
webkit2gtk3-devel AlmaLinux:8 | All versions | 2.50.1-1.el8_10 |
webkit2gtk3-jsc AlmaLinux:8 | All versions | 2.50.1-1.el8_10 |
webkit2gtk3-jsc-devel AlmaLinux:8 | All versions | 2.50.1-1.el8_10 |
webkit2gtk3 Red Hat:enterprise_linux:8::appstream | All versions | 0:2.50.1-1.el8_10 |
webkit2gtk3-debuginfo Red Hat:enterprise_linux:8::appstream | All versions | 0:2.50.1-1.el8_10 |
webkit2gtk3-debugsource Red Hat:enterprise_linux:8::appstream | All versions | 0:2.50.1-1.el8_10 |
webkit2gtk3-devel Red Hat:enterprise_linux:8::appstream | All versions | 0:2.50.1-1.el8_10 |
webkit2gtk3-devel-debuginfo Red Hat:enterprise_linux:8::appstream | All versions | 0:2.50.1-1.el8_10 |
webkit2gtk3-jsc Red Hat:enterprise_linux:8::appstream | All versions | 0:2.50.1-1.el8_10 |
webkit2gtk3-jsc-debuginfo Red Hat:enterprise_linux:8::appstream | All versions | 0:2.50.1-1.el8_10 |
webkit2gtk3-jsc-devel Red Hat:enterprise_linux:8::appstream | All versions | 0:2.50.1-1.el8_10 |
webkit2gtk3-jsc-devel-debuginfo Red Hat:enterprise_linux:8::appstream | All versions | 0:2.50.1-1.el8_10 |
webkit2gtk3 Red Hat:rhel_aus:8.2::appstream | All versions | 0:2.50.1-1.el8_2 |
webkit2gtk3-debuginfo Red Hat:rhel_aus:8.2::appstream | All versions | 0:2.50.1-1.el8_2 |
webkit2gtk3-debugsource Red Hat:rhel_aus:8.2::appstream | All versions | 0:2.50.1-1.el8_2 |
webkit2gtk3-devel Red Hat:rhel_aus:8.2::appstream | All versions | 0:2.50.1-1.el8_2 |
webkit2gtk3-devel-debuginfo Red Hat:rhel_aus:8.2::appstream | All versions | 0:2.50.1-1.el8_2 |
webkit2gtk3-jsc Red Hat:rhel_aus:8.2::appstream | All versions | 0:2.50.1-1.el8_2 |
webkit2gtk3-jsc-debuginfo Red Hat:rhel_aus:8.2::appstream | All versions | 0:2.50.1-1.el8_2 |
webkit2gtk3-jsc-devel Red Hat:rhel_aus:8.2::appstream | All versions | 0:2.50.1-1.el8_2 |
webkit2gtk3-jsc-devel-debuginfo Red Hat:rhel_aus:8.2::appstream | All versions | 0:2.50.1-1.el8_2 |
webkit2gtk3 Red Hat:rhel_aus:8.4::appstream | All versions | 0:2.50.1-1.el8_4 |
webkit2gtk3-debuginfo Red Hat:rhel_aus:8.4::appstream | All versions | 0:2.50.1-1.el8_4 |
webkit2gtk3-debugsource Red Hat:rhel_aus:8.4::appstream | All versions | 0:2.50.1-1.el8_4 |
webkit2gtk3-devel Red Hat:rhel_aus:8.4::appstream | All versions | 0:2.50.1-1.el8_4 |
webkit2gtk3-devel-debuginfo Red Hat:rhel_aus:8.4::appstream | All versions | 0:2.50.1-1.el8_4 |
webkit2gtk3-jsc Red Hat:rhel_aus:8.4::appstream | All versions | 0:2.50.1-1.el8_4 |
webkit2gtk3-jsc-debuginfo Red Hat:rhel_aus:8.4::appstream | All versions | 0:2.50.1-1.el8_4 |
webkit2gtk3-jsc-devel Red Hat:rhel_aus:8.4::appstream | All versions | 0:2.50.1-1.el8_4 |
webkit2gtk3-jsc-devel-debuginfo Red Hat:rhel_aus:8.4::appstream | All versions | 0:2.50.1-1.el8_4 |
webkit2gtk3 Red Hat:rhel_aus:8.6::appstream | All versions | 0:2.50.1-1.el8_6 |
webkit2gtk3-debuginfo Red Hat:rhel_aus:8.6::appstream | All versions | 0:2.50.1-1.el8_6 |
webkit2gtk3-debugsource Red Hat:rhel_aus:8.6::appstream | All versions | 0:2.50.1-1.el8_6 |
webkit2gtk3-devel Red Hat:rhel_aus:8.6::appstream | All versions | 0:2.50.1-1.el8_6 |
webkit2gtk3-devel-debuginfo Red Hat:rhel_aus:8.6::appstream | All versions | 0:2.50.1-1.el8_6 |
webkit2gtk3-jsc Red Hat:rhel_aus:8.6::appstream | All versions | 0:2.50.1-1.el8_6 |
webkit2gtk3-jsc-debuginfo Red Hat:rhel_aus:8.6::appstream | All versions | 0:2.50.1-1.el8_6 |
webkit2gtk3-jsc-devel Red Hat:rhel_aus:8.6::appstream | All versions | 0:2.50.1-1.el8_6 |
webkit2gtk3-jsc-devel-debuginfo Red Hat:rhel_aus:8.6::appstream | All versions | 0:2.50.1-1.el8_6 |
Products include Apple Ipados, Apple Iphone Os, Apple Macos, Apple Safari, Apple Tvos, Apple Visionos and 3 more.
How do I fix CVE-2025-43343?
Upgrade to a fixed version.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2025-43343 being exploited?
There is no known exploitation of CVE-2025-43343 in the wild and no public exploit code.
Other vulnerabilities in Apple Ipados
- CVE-2025-43300 Apple iOS, iPadOS, and macOS Out-of-Bounds Write
- CVE-2025-24201 Apple Multiple Products WebKit Out-of-Bounds Write
- CVE-2025-24085 Apple Multiple Products Use-After-Free
- CVE-2025-31200 Apple Multiple Products Memory Corruption
- CVE-2025-31201 Apple Multiple Products Arbitrary Read and Write
Sources
Also known as ALSA-2025:18070, CLSA-2025-1764234735, DEBIAN-CVE-2025-43343, GHSA-r357-mp92-7297, RHSA-2025:18070, RHSA-2025:19913 and 10 more.