Skip to content
Noroxi
NVD / CVE Program· CNA AMD

CVE-2020-12951: Race condition in ASP firmware could allow less privileged x86 code to perform ASP SMM (System Management Mode) operations.

Noroxi assessment

Priority: Monitor (action score 28/100)

  • The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
  • Probability of exploitation in the next 30 days: 0.21% (FIRST EPSS).
  • Someone with local access to the system can trigger it. A low-privileged account is enough. No user action is required. Special conditions such as timing or configuration are required.
  • According to the record, no fixed version is available yet.

Low priority for now. Update when a fix is released; follow the vendor's advisory.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

Primary sources: NVD · CVE.org · FIRST EPSS

HighCVSS 7.0 · v3.1—No exploit No fix recorded
Published
Nov 16, 2021
Updated
Jun 16, 2026
EPSS
0.2% · 12th percentile

Report tools

JSON

Action score

28

Monitor

Low priority for now.

CVSS
28 / 40 · 7.0 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.2%

Get told when this record changes

  • Not in KEV: no record of exploitation in the wild
  • No public exploit code on record
  • No fixed version yet

If any of these changes, we'll tell you in the daily email digest.

Follow CVE-2020-12951

When you'll hear from us

  • when it enters CISA KEV
  • when exploit code appears or is weaponized
  • when the record is updated (including a fixed version)
  • when EPSS rises 20 points in a week

One daily email digest (06:00 UTC); connect a webhook for KEV listings and weaponized exploits instantly.

Your free account also gets you

Running WordPress? Scan your site free with WP Lens

  • Stack alerts: add the products and versions you run, get the new CVEs that affect them
  • Uptime monitoring: 1 site, instant email when it goes down
  • Add your domain: subdomains and takeover risk scanned every week (1 domain)
  • 10 scans an hour on the security tools (3 a day without an account), an API key and MCP
  • All your scans in one panel: findings, what changed in the last scan, a report per domain or per client (PDF, share link)
All free tools

Sign up with email · Have an account? Sign in

Free account, no card. Unfollow any time.

Don't want an account? Get "Exploited this week" by email every MondayDon't want an account? RSS feed for amd records

Running WordPress? Scan your site free with WP Lens

Is your version affected? Check it

Noroxi analysis

What does it mean in your environment?

The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.

We use this product, ask for help

Affected systems

Is your version affected?

Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.

VendorProduct
amdepyc 7003 firmware
amdepyc 7003
amdepyc 7002 firmware
amdepyc 7002
amdepyc 7001 firmware
amdepyc 7001
amdepyc 72f3 firmware
amdepyc 72f3
amdepyc 7313 firmware
amdepyc 7313
amdepyc 7313p firmware
amdepyc 7313p

and 104 more

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

  • amd epyc 7001 firmwarebefore naplespi-sp3_1.0.0.g
  • amd epyc 7002 firmwarebefore romepi-sp3_1.0.0.c
  • amd epyc 7003 firmwarebefore milanpi-sp3_1.0.0.4
  • amd epyc 7232p firmwarebefore romepi-sp3_1.0.0.c
  • amd epyc 7251 firmwarebefore naplespi-sp3_1.0.0.g
  • amd epyc 7252 firmwarebefore romepi-sp3_1.0.0.c
  • amd epyc 7262 firmwarebefore romepi-sp3_1.0.0.c
  • amd epyc 7272 firmwarebefore romepi-sp3_1.0.0.c
  • amd epyc 7281 firmwarebefore naplespi-sp3_1.0.0.g
  • amd epyc 7282 firmwarebefore romepi-sp3_1.0.0.c
  • amd epyc 72f3 firmwarebefore milanpi-sp3_1.0.0.4
  • amd epyc 7301 firmwarebefore naplespi-sp3_1.0.0.g
  • amd epyc 7302 firmwarebefore romepi-sp3_1.0.0.c
  • amd epyc 7302p firmwarebefore romepi-sp3_1.0.0.c
  • amd epyc 7313 firmwarebefore milanpi-sp3_1.0.0.4
  • amd epyc 7313p firmwarebefore milanpi-sp3_1.0.0.4
  • amd epyc 7343 firmwarebefore milanpi-sp3_1.0.0.4
  • amd epyc 7351 firmwarebefore naplespi-sp3_1.0.0.g
  • amd epyc 7351p firmwarebefore naplespi-sp3_1.0.0.g
  • amd epyc 7352 firmwarebefore romepi-sp3_1.0.0.c

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 Athlon™ Series

    • variousaffected

  • AMD Ryzen™ Series

    • variousaffected

Same product

amd: all records

Other highest-scoring records for the same primary product.

  • CVE-2021-26335Improper input and range checking in the AMD Secure Processor (ASP) boot loader image header may allow an attacker to use attacker-controlle
    31Monitor
  • CVE-2021-26331AMD System Management Unit (SMU) contains a potential issue where a malicious user may be able to manipulate mailbox entries leading to arbi
    31Monitor
  • CVE-2021-26315When the AMD Platform Security Processor (PSP) boot rom loads, authenticates, and subsequently decrypts an encrypted FW, due to insufficient
    31Monitor

Published before and after this one in the same product

  • Later →CVE-2020-12954Nov 16, 2021 · A side effect of an integrated chipset option may be able to be used by an attacker to bypass SPI ROM protections, allowing unauthorized SPI
    22Monitor
  • Later →CVE-2020-12961Nov 16, 2021 · A potential vulnerability exists in AMD Platform Security Processor (PSP) that may allow an attacker to zero any privileged register on the
    31Monitor
  • Later →CVE-2021-26327Nov 16, 2021 · Insufficient validation of guest context in the SNP Firmware could lead to a potential loss of guest confidentiality.
    22Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

No fix version is recorded for this entry. Check the references for vendor advisories.

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.

No history yet (it accumulates with the daily EPSS job).

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 researchers

Finders, 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

  • Someone with local access to the system can trigger it.
  • A low-privileged account is enough.
  • No user action is required.
  • Special conditions such as timing or configuration are required.

If successful

Confidentiality
high · data can be read
Integrity
high · data or configuration can be modified
Availability
high · the service can be disrupted
Attack vector
Local
Attack complexity
High
Privileges required
Low
User interaction
None
Scope
Unchanged
Confidentiality impact
High
Integrity impact
High
Availability impact
High

Weakness class (CWE)

CWE-362 · Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')

CVSS vector

CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

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.

ATT&CK techniques

—

Change log

No changes recorded on tracked fields yet. Score, KEV, exploit maturity and fix status changes appear here.

References

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records