CVE-2023-20587
Improper Access Control in System Management Mode (SMM) may allow an attacker access to the SPI flash potentially leading to arbitrary…
- 7.1HighCVSS base score
- 0.17%Exploitation in 30 daysEPSS · top 93% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
Description
Improper Access Control in System Management Mode (SMM) may allow an attacker access to the SPI flash potentially leading to arbitrary code execution.
Timeline
ID reserved
By AMD
- 16 months later
· 16 months later
Published
- 15 months later
· 15 months later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| CISA-ADPADP (enrichment) | 3.1 | High7.1 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N |
| NVDNVD · Deferred | 3.1 | High7.1 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N |
- EPSS (exploitation in 30 days)
- 0.17% · top 93% of all CVEs (9 Nov 2026)
- CISA SSVC
- Exploitation: none · Automatable: no · Technical impact: total
The list uses the assigner's score when there is one, then CISA's, then NVD's: High 7.1.
Affected products
AMD · 3rd Gen AMD EPYC™ Processors
- affected various
AMD · 4th Gen AMD EPYC™ Processors
- affected various
AMD · 1st Gen AMD EPYC™ Processors
- affected various
AMD · 2nd Gen AMD EPYC™ Processors
- affected various
AMD · AMD EPYC(TM) Embedded 3000
- affected various
AMD · AMD EPYC(TM) Embedded 7002
- affected various
AMD · AMD EPYC(TM) Embedded 7003
- affected various
AMD · AMD EPYC(TM) Embedded 9003
- affected various
References
1
- https://www.amd.com/en/corporate/product-security/bulletin/AMD-SB-7009 (opens in a new tab)vendor-advisoryx_transferred
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2023-24766 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2023-20587)Record last updated .