Skip to content
Noroxi
NVD / CVE Program· CNA AMD

CVE-2021-26410: Improper syscall input validation in ASP (AMD Secure Processor) may force the kernel into reading syscall parameter values from its own memo

Noroxi assessment

Priority: Monitor (action score 7/100)

  • 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: 0.16% (FIRST EPSS).
  • Someone with local access to the system can trigger it. Administrator privileges are required. 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

Improper syscall input validation in ASP (AMD Secure Processor) may force the kernel into reading syscall parameter values from its own memory space allowing an attacker to infer the contents of the kernel memory leading to potential information disclosure.

LowCVSS 1.8 · v4.0—No exploit No fix recorded
Published
Feb 10, 2026
Updated
Jun 16, 2026
EPSS
0.1% · 5th percentile

Report tools

JSON

Action score

7

Monitor

Low priority for now.

CVSS
7 / 40 · 1.8 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.1%

CISA SSVC decision

Exploitation
none
Automatable
no
Technical impact
partial

Vulnrichment: CISA's decision-tree inputs.

CNA vs NVD score

NVD
—
CNA · AMD
1.8
NVD has not scored this yet; the score shown is the CNA’s.

CVSS:4.0/AV:L/AC:H/AT:N/PR:H/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N

The score given by the assigning authority versus NVD’s independent score. A gap means the severity is contested.

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-2021-26410

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.

—

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 AMD Radeon™ PRO V520

    • Contact your AMD Customer Engineering representativenot affected

  • AMD AMD Radeon™ PRO V620

    • Contact your AMD Customer Engineering representativenot affected

  • AMD AMD Radeon™ PRO W5000 Series Graphics Products

    • AMD Software: Adrenalin Edition 25.6.1 (25.10.13.01), AMD Software: PRO Edition 25.Q2 (25.10.10), Radeon Software For Linux (25.10.1)not affected

  • AMD AMD Radeon™ PRO W6000 Series Graphics Products

    • AMD Software: Adrenalin Edition 25.6.1 (25.10.13.01), AMD Software: PRO Edition 25.Q2 (25.10.10), Radeon Software For Linux (25.10.1)not affected

  • AMD AMD Radeon™ RX 5000 Series Graphics Products

    • AMD Software: Adrenalin Edition 25.6.1 (25.10.13.01), AMD Software: PRO Edition 25.Q2 (25.10.10), Radeon Software For Linux (25.10.1)not affected

  • AMD AMD Radeon™ RX 6000 Series Graphics Products

    • AMD Software: Adrenalin Edition 25.6.1 (25.10.13.01), AMD Software: PRO Edition 25.Q2 (25.10.10), Radeon Software For Linux (25.10.1)not affected

  • AMD AMD Ryzen™ 4000 Series Desktop Processors

    • ComboAM4v2 PI 1.2.0.5not affected

  • AMD AMD Ryzen™ 4000 Series Mobile Processors with Radeon™ Graphics

    • RenoirPI-FP6 1.0.0.8not affected

  • AMD AMD Ryzen™ 5000 Series Desktop Processors with Radeon™ Graphics

    • ComboAM4v2 PI 1.2.0.5+ iGPU Driver Updatenot affected

  • AMD AMD Ryzen™ 5000 Series Mobile Processors with Radeon™ Graphics

    • CezannePI-FP6 1.0.0.8not affected

  • AMD AMD Ryzen™ 7030 Series Mobile Processors with Radeon™ Graphics

    • CezannePI-FP6 1.0.0.8not affected

  • AMD AMD Ryzen™ Embedded R1000 Series Processors

    • EmbeddedPI-FP5_1.2.0.Anot affected

Same product

amd: all records

Other highest-scoring records for the same primary product.

  • CVE-2021-26380A compromised Trusted OS (TOS) driver could issue a malformed call that could potentially allow memory access outside the intended range re
    7Monitor

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.
  • Administrator privileges are required.
  • No user action is required.
  • Special conditions such as timing or configuration are required.

If successful

Confidentiality
Integrity
Availability
Attack vector
Local
Attack complexity
High
Privileges required
High
User interaction
None
Scope
X

Weakness class (CWE)

CWE-822 · Untrusted Pointer Dereference

CVSS vector

CVSS:4.0/AV:L/AC:H/AT:N/PR:H/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

nvd-secondary

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

Show all references (1 more)

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

All records