# Improper register access control in ASP may allow a privileged attacker to perform unauthorized access to ASP’s Crypto Co-Processor (CCP) registers from x86 resulting in potential loss of control of…

CVE record · `CVE-2023-20599`

- **Identifiers:** `CVE-2023-20599`
- **State:** Confirmed
- **Severity:** CVSS 7.9 High
- **Critical:** No
- **CNA:** AMD
- **Weakness (CWE):** [CWE-1262](https://cwe.mitre.org/data/definitions/1262.html)
- **Tags:** [CWE-1262](https://agentprime.io/advisories/tag/cwe-1262.md)
- **Technologies:** [AMD EPYC™ 7002 Series Processors](https://agentprime.io/advisories/technology/amd-epyctm-7002-series-processors.md) · [AMD Ryzen™ Threadripper™ 3000 Processors](https://agentprime.io/advisories/technology/amd-ryzentm-threadrippertm-3000-processors.md) · [AMD Ryzen™ Threadripper™ PRO 3000 WX Processors](https://agentprime.io/advisories/technology/amd-ryzentm-threadrippertm-pro-3000-wx-processors.md) · [AMD Ryzen™ 3000 Series Mobile Processors with Radeon™ Graphics](https://agentprime.io/advisories/technology/amd-ryzentm-3000-series-mobile-processors-with-radeontm-graphics.md) · [AMD EPYC™ Embedded 7002 Series Processors](https://agentprime.io/advisories/technology/amd-epyctm-embedded-7002-series-processors.md) · [AMD EPYC™ Embedded 7003 Series Processors](https://agentprime.io/advisories/technology/amd-epyctm-embedded-7003-series-processors.md) · [AMD Ryzen™ Embedded R1000 Series Processors](https://agentprime.io/advisories/technology/amd-ryzentm-embedded-r1000-series-processors.md) · [AMD Athlon™ 3000 Series Mobile Processors with Radeon™ Graphics](https://agentprime.io/advisories/technology/amd-athlontm-3000-series-mobile-processors-with-radeontm-graphics.md) · [AMD Ryzen™ Embedded R2000 Series Processors](https://agentprime.io/advisories/technology/amd-ryzentm-embedded-r2000-series-processors.md) · [AMD Ryzen™ Embedded V1000 Series Processors](https://agentprime.io/advisories/technology/amd-ryzentm-embedded-v1000-series-processors.md)
- **Published:** 10 Jun 2025
- **Updated:** 26 Feb 2026
- **Reviewed by a person:** No

Published by the CVE Program (CNA: AMD) at 10 Jun 2025, 16:15 UTC. agentprime has not analysed this yet, so whether it affects any app is not known. This CVE names a vendor and product rather than a package, so the lockfile check doesn’t match it.

## Affected products, as the CNA wrote them

- Vendor: AMD. Product: AMD EPYC™ 7002 Series Processors.
  - unaffected: `RomePI 100H SEV 0.24.19 [hex 00.18.13]`
  - Other versions: affected
- Vendor: AMD. Product: AMD Ryzen™ Threadripper™ 3000 Processors.
  - unaffected: `CastlePeakPI-SP3r3_1.0.0.F`
  - Other versions: affected
- Vendor: AMD. Product: AMD Ryzen™ Threadripper™ PRO 3000 WX Processors.
  - unaffected: `ChagallWSPI-sWRX8 1.0.0.C`
  - unaffected: `CastlePeakWSPI-sWRX8 1.0.0.H`
  - Other versions: affected
- Vendor: AMD. Product: AMD Ryzen™ 3000 Series Mobile Processors with Radeon™ Graphics.
  - unaffected: `PicassoPI-FP5_1.0.1.2c`
  - Other versions: affected
- Vendor: AMD. Product: AMD EPYC™ Embedded 7002 Series Processors.
  - unaffected: `EmbRomePI-SP3 1.0.0.B`
  - Other versions: affected
- Vendor: AMD. Product: AMD EPYC™ Embedded 7003 Series Processors.
  - unaffected: `EmbMilanPI-SP3 1.0.0.8`
  - Other versions: affected
- Vendor: AMD. Product: AMD Ryzen™ Embedded R1000 Series Processors.
  - unaffected: `EmbeddedPI-FP5 1211`
  - Other versions: affected
- Vendor: AMD. Product: AMD Athlon™ 3000 Series Mobile Processors with Radeon™ Graphics.
  - unaffected: `EmbeddedPI-FP5 1211`
  - Other versions: affected
- Vendor: AMD. Product: AMD Ryzen™ Embedded R2000 Series Processors.
  - unaffected: `EmbeddedR2KPI-FP5 1006`
  - Other versions: affected
- Vendor: AMD. Product: AMD Ryzen™ Embedded V1000 Series Processors.
  - unaffected: `EmbeddedPI-FP5 1211 RC1`
  - Other versions: affected

## Not analysed yet

We haven’t published our own analysis of this CVE. If a person reviews it, this page will say what’s affected and what has to be true for it to matter.

## Severity and exploitation

- 7.9 High, CVSS 3.1: `CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:N`, from CNA (AMD)

- **CISA KEV:** Not listed.
- **EPSS:** 0.0019, the 8th percentile, on 6 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

## Timeline

This record came from the full history of the CVE Program, published 10 Jun 2025. New records show when each source confirmed them.

## Sources

- [CVE List: CVE-2023-20599](https://www.cve.org/CVERecord?id=CVE-2023-20599)
- [NVD: CVE-2023-20599](https://nvd.nist.gov/vuln/detail/CVE-2023-20599)

### References from the CNA

- <https://www.amd.com/en/resources/product-security/bulletin/AMD-SB-7039.html>

Facts on this page come from the CVE List as the CNA published them, with CVSS from the sources named above, CISA KEV and FIRST EPSS. Vendors, products and versions are shown as the CNA wrote them. We don’t reproduce the CVE’s description.

## Check whether this affects you

This CVE names a vendor and product rather than a package, so the lockfile check doesn’t match it. Compare the affected versions above with what you run.

- With the agentprime MCP server (<https://api.agentprime.io/mcp>), `get_advisory` returns this record and `search_advisories` finds related ones. Setup: <https://agentprime.io/mcp.md>
- As JSON: <https://api.agentprime.io/v1/advisories/CVE-2023-20599>
- Everything that needs attention now: <https://agentprime.io/advisories/critical.md>

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The web page: <https://agentprime.io/advisories/CVE-2023-20599/>. Everything for agents: <https://agentprime.io/llms.txt>.