# CVE-2026-64739: Memory corruption in iOS and iPadOS

> An out-of-bounds write vulnerability in Apple operating systems allows attackers to cause unexpected app termination.

- **Severity:** High 8.8 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** A user has to click or open something
- **Fix available:** No
- **Published:** 27 Jul 2026
- **Updated:** 17 Aug 2026
- **Also known as:** GHSA-37v7-fcj8-25rq

## What is CVE-2026-64739?

CVE-2026-64739 is a high-severity memory corruption vulnerability in Apple Ipados, published on 27 Jul 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.

### Official description

An out-of-bounds write issue was addressed with improved bounds checking. This issue is fixed in iOS 18.7.10 and iPadOS 18.7.10, iOS 26.6 and iPadOS 26.6, macOS Sequoia 15.7.8, macOS Sonoma 14.8.8, macOS Tahoe 26.6, tvOS 26.6, visionOS 26.6, watchOS 26.6. An attacker may be able to cause unexpected app termination.

Weakness: CWE-787 (Out-of-bounds Write)

## Which versions are affected by CVE-2026-64739?

It affects 6 products.


Products: Apple Ipados, Apple Iphone Os, Apple Macos, Apple Tvos, Apple Visionos, Apple Watchos.

## How do I fix CVE-2026-64739?

No fix has been published for CVE-2026-64739 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-64739 being exploited?

There is no known exploitation of CVE-2026-64739 in the wild and no public exploit code.

## Other vulnerabilities in Apple Ipados

- [CVE-2025-43300](https://insights.sbomify.com/CVE-2025-43300/): Apple iOS, iPadOS, and macOS Out-of-Bounds Write (critical 10.0, exploited in the wild)
- [CVE-2025-24201](https://insights.sbomify.com/CVE-2025-24201/): Apple Multiple Products WebKit Out-of-Bounds Write (critical 10.0, exploited in the wild)
- [CVE-2025-24085](https://insights.sbomify.com/CVE-2025-24085/): Apple Multiple Products Use-After-Free (critical 10.0, exploited in the wild)
- [CVE-2025-31200](https://insights.sbomify.com/CVE-2025-31200/): Apple Multiple Products Memory Corruption (critical 9.8, exploited in the wild)
- [CVE-2025-31201](https://insights.sbomify.com/CVE-2025-31201/): Apple Multiple Products Arbitrary Read and Write (critical 9.8, exploited in the wild)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-64739 and fix it if it is affected.

What it is: CVE-2026-64739 is a high-severity memory corruption vulnerability in Apple Ipados, published on 27 Jul 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Exploitation: There is no known exploitation of CVE-2026-64739 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-2026-64739/ (Markdown: https://insights.sbomify.com/CVE-2026-64739/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-64739
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-64739
- OSV: https://osv.dev/vulnerability/CVE-2026-64739

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-64739/
Summaries are generated and may contain mistakes; the official description above is the record.