Vulnerability · Published Aug 13, 2024 · Assigned by AMD
CVE-2023-20578
High 7.5
In plain English
A high-severity security flaw in AMD EPYC™ 7001 Processors from AMD. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.1% (higher than 2% of all known vulnerabilities).
Severity (CVSS 3.1)7.5High
Exploit odds (30 days)0.1%top 98.4% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
A TOCTOU (Time-Of-Check-Time-Of-Use) in SMM may allow an attacker with ring0 privileges and access to the BIOS menu or UEFI shell to modify the communications buffer potentially resulting in arbitrary code execution.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| AMD | AMD EPYC™ 7001 Processors | see references |
| AMD | AMD EPYC™ 7002 Processors | see references |
| AMD | AMD EPYC™ 7003 Processors | see references |
| AMD | AMD EPYC™ 9004 Processors | see references |
| AMD | AMD Ryzen™ 7000 Series Desktop Processors | see references |
| AMD | AMD Ryzen™ Threadripper™ PRO 5000WX Processors | see references |
| AMD | AMD Ryzen™ 7020 Series Processors with Radeon™ Graphics | see references |
| AMD | AMD Ryzen™ 6000 Series Processors with Radeon™ Graphics | see references |
| AMD | AMD Ryzen™ 7035 Series Processors with Radeon™ Graphics | see references |
| AMD | AMD EPYC™ Embedded 3000 | see references |
| AMD | AMD EPYC™ Embedded 7002 | see references |
| AMD | AMD EPYC™ Embedded 7003 | see references |
| AMD | AMD EPYC™ Embedded 9003 | see references |
| AMD | AMD Ryzen™ Embedded 7000 | see references |
| AMD | AMD RyzenTM Embedded V3000 | see references |
Weakness: CWE-367 · Vector: CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H