# CVE-2020-9910: Security feature bypass in Safari

> An attacker with arbitrary read and write capabilities can bypass Pointer Authentication in Apple operating systems and browsers.

- **Severity:** High 8.8 (`CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 16 Oct 2020
- **Updated:** 4 Aug 2024
- **Also known as:** GHSA-mhx4-5j7f-6rxc

## What is CVE-2020-9910?

CVE-2020-9910 is a high-severity vulnerability in Apple Icloud, published on 16 Oct 2020. Any signed-in user can exploit it over the network, with no action from the victim.

### Official description

Multiple issues were addressed with improved logic. This issue is fixed in iOS 13.6 and iPadOS 13.6, tvOS 13.4.8, watchOS 6.2.8, Safari 13.1.2, iTunes 12.10.8 for Windows, iCloud for Windows 11.3, iCloud for Windows 7.20. A malicious attacker with arbitrary read and write capability may be able to bypass Pointer Authentication.

## Which versions are affected by CVE-2020-9910?

It affects 7 products.


Products: Apple Icloud, Apple Ipados, Apple Iphone Os, Apple Itunes, Apple Safari, Apple Tvos, Apple Watchos.

## How do I fix CVE-2020-9910?

No fix has been published for CVE-2020-9910 yet. Limit exposure of the affected software until one is available.

## Is CVE-2020-9910 being exploited?

There is no known exploitation of CVE-2020-9910 in the wild and no public exploit code.

## Other vulnerabilities in Apple Icloud

- [CVE-2019-8506](https://insights.sbomify.com/CVE-2019-8506/): Apple Multiple Products Type Confusion (high 8.8, exploited in the wild)
- [CVE-2020-27932](https://insights.sbomify.com/CVE-2020-27932/): Apple Multiple Products Type Confusion (high 7.8, exploited in the wild)
- [CVE-2019-8746](https://insights.sbomify.com/CVE-2019-8746/): Memory corruption in iOS (critical 9.8)
- [CVE-2019-8749](https://insights.sbomify.com/CVE-2019-8749/): Memory corruption in iOS (critical 9.8)
- [CVE-2019-8756](https://insights.sbomify.com/CVE-2019-8756/): Memory corruption in iOS (critical 9.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2020-9910 and fix it if it is affected.

What it is: CVE-2020-9910 is a high-severity vulnerability in Apple Icloud, published on 16 Oct 2020. Any signed-in user can exploit it over the network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2020-9910 in the wild and no public exploit code.

Affected product: Apple Icloud. 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-2020-9910/ (Markdown: https://insights.sbomify.com/CVE-2020-9910/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2020-9910
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2020-9910
- OSV: https://osv.dev/vulnerability/CVE-2020-9910

---
From sbomify Insights: https://insights.sbomify.com/CVE-2020-9910/
Summaries are generated and may contain mistakes; the official description above is the record.