SMM configuration may not be immutable, as intended, when SNP is enabled resulting in a potential limited loss of guest memory integrity.
- Published
- Nov 14, 2023
- Updated
- Jun 17, 2026
- EPSS
- 0.3% · 26th percentile
- CWE
- —
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Report tools
Action score
21
Monitor
Low priority for now.
- CVSS
- 21 / 40 · 5.3 / 10
- CISA KEV
- 0 / 30 · Not listed
- EPSS
- 0 / 30 · 0.3%
CNA vs NVD score
- NVD
- 5.3
- CNA · AMD
- 1.9
- 3.4 point gap
CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:N/I:L/A:N
The score given by the assigning authority versus NVD’s independent score. A gap means the severity is contested.
Affected systems
| Vendor | Product | CPE |
|---|---|---|
| amd | epyc 9654p firmware | cpe:2.3:o:amd:epyc_9654p_firmware |
| amd | epyc 9654p | cpe:2.3:h:amd:epyc_9654p |
| amd | epyc 9654 firmware | cpe:2.3:o:amd:epyc_9654_firmware |
| amd | epyc 9654 | cpe:2.3:h:amd:epyc_9654 |
| amd | epyc 9634 firmware | cpe:2.3:o:amd:epyc_9634_firmware |
| amd | epyc 9634 | cpe:2.3:h:amd:epyc_9634 |
| amd | epyc 9554p firmware | cpe:2.3:o:amd:epyc_9554p_firmware |
| amd | epyc 9554p | cpe:2.3:h:amd:epyc_9554p |
| amd | epyc 9554 firmware | cpe:2.3:o:amd:epyc_9554_firmware |
| amd | epyc 9554 | cpe:2.3:h:amd:epyc_9554 |
| amd | epyc 9534 firmware | cpe:2.3:o:amd:epyc_9534_firmware |
| amd | epyc 9534 | cpe:2.3:h:amd:epyc_9534 |
and 118 more
Affected versions
NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.
- amd epyc 7203 firmwarebefore milanpi_1.0.0.a
- amd epyc 7203p firmwarebefore milanpi_1.0.0.a
- amd epyc 72f3 firmwarebefore milanpi_1.0.0.a
- amd epyc 7303 firmwarebefore milanpi_1.0.0.a
- amd epyc 7303p firmwarebefore milanpi_1.0.0.a
- amd epyc 7313 firmwarebefore milanpi_1.0.0.a
- amd epyc 7313p firmwarebefore milanpi_1.0.0.a
- amd epyc 7343 firmwarebefore milanpi_1.0.0.a
- amd epyc 7373x firmwarebefore milanpi_1.0.0.a
- amd epyc 73f3 firmwarebefore milanpi_1.0.0.a
- amd epyc 7413 firmwarebefore milanpi_1.0.0.a
- amd epyc 7443 firmwarebefore milanpi_1.0.0.a
- amd epyc 7443p firmwarebefore milanpi_1.0.0.a
- amd epyc 7453 firmwarebefore milanpi_1.0.0.a
- amd epyc 7473x firmwarebefore milanpi_1.0.0.a
- amd epyc 74f3 firmwarebefore milanpi_1.0.0.a
- amd epyc 7513 firmwarebefore milanpi_1.0.0.a
- amd epyc 7543 firmwarebefore milanpi_1.0.0.a
- amd epyc 7543p firmwarebefore milanpi_1.0.0.a
- amd epyc 7573x firmwarebefore milanpi_1.0.0.a
Versions reported by the vendor
Affected version ranges reported by the assigning authority (AMD). Independent of NVD's CPE analysis and usually ahead of it.
AMD 3rd Gen AMD EPYC™ Processors
- variousaffected
AMD 4th Gen AMD EPY™ Processors
- variousaffected
AMD AMD EPYC™ Embedded 7003
- variousaffected
Package-level exposure
OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.
| Ecosystem | Package | Affected range | Fix |
|---|---|---|---|
| SUSE:Linux Enterprise High Performance Computing 15 SP1-LTSS | kernel-firmware | before 20200107-150100.3.40.1 | 20200107-150100.3.40.1 |
| SUSE:Linux Enterprise High Performance Computing 15 SP3-ESPOS | kernel-firmware | before 20210208-150300.4.19.1 | 20210208-150300.4.19.1 |
| SUSE:Linux Enterprise Micro 5.3 | kernel-firmware | before 20220509-150400.4.25.1 | 20220509-150400.4.25.1 |
| SUSE:Linux Enterprise Micro 5.3 | kernel-firmware | before 20220509-150400.4.25.1 | 20220509-150400.4.25.1 |
| SUSE:Linux Enterprise Micro 5.5 | kernel-firmware | before 20230724-150500.3.9.1 | 20230724-150500.3.9.1 |
| SUSE:Linux Enterprise Micro 5.5 | kernel-firmware | before 20230724-150500.3.9.1 | 20230724-150500.3.9.1 |
| SUSE:Linux Enterprise Server 12 SP5 | kernel-firmware | before 20190618-5.34.1 | 20190618-5.34.1 |
Same product
amd: all recordsOther highest-scoring records for the same primary product.
- CVE-2021-46766Improper clearing of sensitive data in the ASP Bootloader may expose secret keys to a privileged attacker accessing ASP SRAM, potentially le22Monitor
Remediation
Which version to upgrade to
Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.
| Product / package | Fixed version | Source |
|---|---|---|
| opensuse:kernel-firmware | 20230724-150500.3.9.1 · openSUSE:Leap 15.5 | Package registry (OSV) |
| suse:kernel-firmware | 20210208-150300.4.19.1 · SUSE:Linux Enterprise High Performance Computing 15 SP3-ESPOS | Package registry (OSV) |
| suse:kernel-firmware | 20230724-150500.3.9.1 · SUSE:Linux Enterprise Micro 5.5 | Package registry (OSV) |
Exploit status
No known public exploit
No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.
Research context
For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.
Timeline
From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.
No dated events beyond publication.
FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).
Patch and commit links
Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.
No commit or PR link among the references.
Credits
All researchersFinders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.
No credits in the CNA record.
Variant candidates
Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.
No nightly-computed relations.
Chain candidates
An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.
—
Bug bounty scope
No known public program.
Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).
Technical details
Attack conditions
- Anyone who can reach it over the internet can trigger it.
- No account or password is required.
- No user action is required.
- No special conditions are required; it is repeatable.
If successful
- Confidentiality
- none
- Integrity
- low · data or configuration can be modified
- Availability
- none
- Attack vector
- Network
- Attack complexity
- Low
- Privileges required
- None
- User interaction
- None
- Scope
- Unchanged
- Confidentiality impact
- None
- Integrity impact
- Low
- Availability impact
- None
Weakness class (CWE)
—
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
nvd-primary
Attack context
MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.
MITRE has no CAPEC/ATT&CK mapping for this CWE.
Noroxi analysis
No Noroxi analysis for this record yet
We don't hand-write analysis for all 385,000+ vulnerabilities; that wouldn't be honest. For notable, high-impact vulnerabilities our team writes the mechanism, detection and remediation steps.
We use this product, ask for helpChange log
- Fix✗ → ✓
For records you follow, these changes also arrive as notifications. →
References
- www.amd.com/en/corporate/product-security/bulletin/AMD-SB-3002
- www.amd.com/en/corporate/product-security/bulletin/AMD-SB-5001
Vendor advisories and official records. Exploit/PoC links are deliberately left out.