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Fencer Vulns
low 2.5

CVE-2023-20581 json

Improper access control in the IOMMU may allow a privileged attacker to bypass RMP checks, potentially leading to a loss of guest memory in…

published 2025-02-11 20 mo ago modified 2026-06-17 4 mo ago also EUVD-2023-24760

cvss
2.5
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 5%
public exploits
0
none known

Summary

Improper access control in the IOMMU may allow a privileged attacker to bypass RMP checks, potentially leading to a loss of guest memory integrity.

Patch / fix

  • AMD AMD EPYC™ 9004 Processors GenoaPI 1.0.0.C, SEV FW1.55.36
  • AMD AMD EPYC™ Embedded 9004 EmbGenoaPI-SP5 1.0.0.7

CISA SSVC

Exploitation
none
Automatable
no
Technical impact
partial
Assessed
20 mo ago

Exploit prediction

0.17% chance of exploitation in the next 30 days, higher than 5% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.1 2.5 CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:N/I:L/A:N

Affected products

  • AMD AMD EPYC™ 9004 Processors
  • AMD AMD EPYC™ Embedded 9004

Classification

Weakness
  • CWE-1284 Improper Validation of Specified Quantity in Input

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.