CVE-2026-86953 An out-of-bounds write issue was addressed with improved bounds checking.
Medium 4.6
Published
Updated
Check this codebase for CVE-2026-86953 and fix it if it is affected.
What it is: CVE-2026-86953 is a medium-severity vulnerability in Apple iOS and iPadOS, published on 20 Oct 2026.
Exploitation: There is no known exploitation of CVE-2026-86953 in the wild and no public exploit code.
Affected product: Apple iOS and 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-2026-86953/ (Markdown: https://insights.sbomify.com/CVE-2026-86953/index.md)
- Exploited in the wild
- Not known
- Fix
- None listed
What is CVE-2026-86953?
CVE-2026-86953 is a medium-severity vulnerability in Apple iOS and iPadOS, published on 20 Oct 2026.
Official description
An out-of-bounds write issue was addressed with improved bounds checking. This issue is fixed in iOS 27 and iPadOS 27, macOS Golden Gate 27, tvOS 27, visionOS 27, watchOS 27. An attacker in physical proximity may be able to cause a denial-of-service.
Weakness: CWE-787
Which versions are affected by CVE-2026-86953?
How do I fix CVE-2026-86953?
No fix has been published for CVE-2026-86953 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-86953 being exploited?
There is no known exploitation of CVE-2026-86953 in the wild and no public exploit code.
Sources
Also known as GHSA-3hf6-q2c8-cwvf.