# CVE-2021-46773: Memory corruption in 3rd Gen AMD Ryzen™ Threadripper™ Processors “Castle Peak” HEDT

> A privileged attacker can corrupt ASP memory via insufficient input validation in ABL, potentially leading to code execution or integrity loss on AMD processors.

- **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:** 9 May 2023
- **Updated:** 28 Jan 2025
- **Also known as:** GHSA-fpvr-537c-jhg2

## What is CVE-2021-46773?

CVE-2021-46773 is a high-severity memory corruption vulnerability in 3rd Gen AMD Ryzen™ Threadripper™ Processors “Castle Peak” HEDT, published on 9 May 2023. Any signed-in user can exploit it over the network, with no action from the victim.

### Official description

Insufficient input validation in ABL may enable
a privileged attacker to corrupt ASP memory, potentially resulting in a loss of
integrity or code execution.

Weakness: CWE-20 (Improper Input Validation)

## Which versions are affected by CVE-2021-46773?

It affects 63 products.


Products: Amd Ryzen 1200 \(Af\) Firmware, Amd Ryzen 1600 \(Af\) Firmware, Amd Ryzen 2200g Firmware, Amd Ryzen 2200ge Firmware, Amd Ryzen 2300x Firmware, Amd Ryzen 2400g Firmware, Amd Ryzen 2400ge Firmware, Amd Ryzen 2500x Firmware, Amd Ryzen 2600 Firmware, Amd Ryzen 2600e Firmware, Amd Ryzen 2600x Firmware, Amd Ryzen 2700 Firmware, Amd Ryzen 2700e Firmware, Amd Ryzen 2700x Firmware, Amd Ryzen 2920x Firmware, Amd Ryzen 2950x Firmware, Amd Ryzen 2970wx Firmware, Amd Ryzen 2990wx Firmware, Amd Ryzen 3100 Firmware, Amd Ryzen 3300x Firmware and 43 more.

## How do I fix CVE-2021-46773?

No fix has been published for CVE-2021-46773 yet. Limit exposure of the affected software until one is available.

## Is CVE-2021-46773 being exploited?

There is no known exploitation of CVE-2021-46773 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2021-46773 and fix it if it is affected.

What it is: CVE-2021-46773 is a high-severity memory corruption vulnerability in 3rd Gen AMD Ryzen™ Threadripper™ Processors “Castle Peak” HEDT, published on 9 May 2023. Any signed-in user can exploit it over the network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2021-46773 in the wild and no public exploit code.

Affected product: 3rd Gen AMD Ryzen™ Threadripper™ Processors “Castle Peak” HEDT. 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-2021-46773/ (Markdown: https://insights.sbomify.com/CVE-2021-46773/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2021-46773
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2021-46773
- OSV: https://osv.dev/vulnerability/CVE-2021-46773

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From sbomify Insights: https://insights.sbomify.com/CVE-2021-46773/
Summaries are generated and may contain mistakes; the official description above is the record.