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NVD / CVE Program· CNA AMD

CVE-2021-46753: Failure to validate the length fields of the ASP (AMD Secure Processor) sensor fusion hub headers may allow an attacker with a malicious Uap

Noroxi assessment

Priority: Monitor (action score 36/100)

  • 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: 0.56% (FIRST EPSS).
  • 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.
  • According to CISA the attack is automatable: targets can be found by mass scanning.
  • 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

Failure to validate the length fields of the ASP (AMD Secure Processor) sensor fusion hub headers may allow an attacker with a malicious Uapp or ABL to map the ASP sensor fusion hub region and overwrite data structures leading to a potential loss of confidentiality and integrity.

CriticalCVSS 9.1 · v3.1—No exploit No fix recorded
Published
May 9, 2023
Updated
Jun 17, 2026
EPSS
0.5% · 46th percentile
CWE
—

Report tools

JSON

Action score

36

Monitor

Low priority for now.

CVSS
36 / 40 · 9.1 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.5%

CISA SSVC decision

Exploitation
none
Automatable
yes
Technical impact
total

Vulnrichment: CISA's decision-tree inputs.

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-2021-46753

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

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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.

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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
amdryzen 6600h firmware
amdryzen 6600h
amdryzen 6600hs firmware
amdryzen 6600hs
amdryzen 6600u firmware
amdryzen 6600u
amdryzen 6800h firmware
amdryzen 6800h
amdryzen 6800hs firmware
amdryzen 6800hs
amdryzen 6800u firmware
amdryzen 6800u

and 120 more

Affected versions

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

  • amd athlon gold 3150g firmwarepicassopi-fp5_1.0.0.e
  • amd athlon gold 3150g firmwarepollockpi-ft5_1.0.0.4
  • amd athlon gold 3150ge firmwarepicassopi-fp5_1.0.0.e
  • amd athlon gold 3150ge firmwarepollockpi-ft5_1.0.0.4
  • amd athlon silver 3050ge firmwarepicassopi-fp5_1.0.0.e
  • amd athlon silver 3050ge firmwarepollockpi-ft5_1.0.0.4
  • amd ryzen 1200 (af) firmwarecomboam4pi_1.0.0.9
  • amd ryzen 1200 (af) firmwarecomboam4v2_pi_1.2.0.8
  • amd ryzen 1200 (af) firmwarepinnaclepi-am4_1.0.0.d
  • amd ryzen 1200 (af) firmwareraven-fp5-am4_1.1.0.f
  • amd ryzen 1600 (af) firmwarecomboam4pi_1.0.0.9
  • amd ryzen 1600 (af) firmwarecomboam4v2_pi_1.2.0.8
  • amd ryzen 1600 (af) firmwarepinnaclepi-am4_1.0.0.d
  • amd ryzen 1600 (af) firmwareraven-fp5-am4_1.1.0.f
  • amd ryzen 2200g firmwarecomboam4pi_1.0.0.9
  • amd ryzen 2200g firmwarecomboam4v2_pi_1.2.0.8
  • amd ryzen 2200g firmwarepinnaclepi-am4_1.0.0.d
  • amd ryzen 2200g firmwareraven-fp5-am4_1.1.0.f
  • amd ryzen 2200ge firmwarecomboam4pi_1.0.0.9
  • amd ryzen 2200ge firmwarecomboam4v2_pi_1.2.0.8

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™ 3000 Series Mobile Processors with Radeon™ Graphics “Pollock”

    • variousaffected

  • AMD Athlon™ 3000 Series Mobile Processors with Radeon™ Graphics “Dali”/”Dali” ULP

    • variousaffected

  • AMD Ryzen™ 2000 series Desktop Processors “Raven Ridge” AM4

    • variousaffected

  • AMD Ryzen™ 2000 Series Mobile Processors “Raven Ridge” FP5

    • variousaffected

  • AMD Ryzen™ 3000 Series Mobile processor, 2nd Gen AMD Ryzen™ Mobile Processors with Radeon™ Graphics “Picasso”

    • variousaffected

  • AMD Ryzen™ 3000 Series Mobile Processors with Radeon™ Graphics “Renoir”

    • variousaffected

  • AMD Ryzen™ 5000 Series Desktop processor with Radeon™ Graphics “Cezanne” AM4

    • variousaffected

  • AMD Ryzen™ 5000 Series Mobile processors with Radeon™ Graphics “Cezanne”

    • variousaffected

  • AMD Ryzen™ 5000 Series Mobile Processors with Radeon™ Graphics “Lucienne”

    • variousaffected

  • AMD Ryzen™ 6000 Series Mobile Processors "Rembrandt"

    • variousaffected

Same product

amd: all records

Other highest-scoring records for the same primary product.

  • CVE-2021-46773Insufficient input validation in ABL may enable a privileged attacker to corrupt ASP memory, potentially resulting in a loss of integrity or
    35Monitor
  • CVE-2021-46765Insufficient input validation in ASP may allow an attacker with a compromised SMM to induce out-of-bounds memory reads within the ASP, poten
    30Monitor

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

  • 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
high · data can be read
Integrity
high · data or configuration can be modified
Availability
none
Attack vector
Network
Attack complexity
Low
Privileges required
None
User interaction
None
Scope
Unchanged
Confidentiality impact
High
Integrity impact
High
Availability impact
None

Weakness class (CWE)

—

CVSS vector

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

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