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Fencer Vulns
high 7.8

CVE-2021-46757 json

Insufficient checking of memory buffer in ASP Secure OS may allow an attacker with a malicious TA to read/write to the ASP Secure OS kernel…

published 2024-02-13 2 y ago modified 2026-06-17 4 mo ago also EUVD-2021-33413

cvss
7.8
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.2%
EPSS 0.2% chance of exploitation in 30 days, percentile 7%
public exploits
0
none known

Summary

Insufficient checking of memory buffer in ASP Secure OS may allow an attacker with a malicious TA to read/write to the ASP Secure OS kernel virtual address space potentially leading to privilege escalation.

Patch / fix

  • amd ryzen_embedded_5950e_firmware embam4pi_1.0.0.0
  • amd ryzen_embedded_5900e_firmware embam4pi_1.0.0.0
  • amd ryzen_embedded_5800e_firmware embam4pi_1.0.0.0
  • amd ryzen_embedded_5600e_firmware embam4pi_1.0.0.0
  • amd ryzen_embedded_v2516_firmware embeddedpi-fp6_1.0.0.6
  • amd ryzen_embedded_v2546_firmware embeddedpi-fp6_1.0.0.6
  • amd ryzen_embedded_v2718_firmware embeddedpi-fp6_1.0.0.6
  • amd ryzen_embedded_v2748_firmware embeddedpi-fp6_1.0.0.6
  • amd ryzen_embedded_r2312_firmware embeddedpi-fp6_1.0.0.6
  • amd ryzen_embedded_r2314_firmware embeddedpi-fp6_1.0.0.6

CISA SSVC

Exploitation
none
Automatable
no
Technical impact
total
Assessed
2 y ago

Exploit prediction

0.18% chance of exploitation in the next 30 days, higher than 7% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CISA ADP 3.1 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
NVD 3.1 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CNA 3.1 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Affected products

  • AMD AMD Ryzen™ Embedded 5000
  • AMD AMD Ryzen™ Embedded V2000

Classification

Weakness
  • CWE-119 Improper Restriction of Operations within the Bounds of a Memory Buffer

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.