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Fencer Vulns
medium 5.5

CVE-2023-20597 json

Improper initialization of variables in the DXE driver may allow a privileged user to leak sensitive information via local access.

published 2023-09-20 3 y ago modified 2026-06-17 4 mo ago also EUVD-2023-24776

cvss
5.5
version 3.1, NVD
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

Improper initialization of variables in the DXE driver may allow a privileged user to leak sensitive information via local access.

Patch / fix

  • AMD AMD EPYC™ Embedded 7003 EmbMilanPI-SP3 1.0.0.6
  • AMD AMD Ryzen™ Embedded 5000 EmbAM4PI 1.0.0.2
  • AMD AMD Ryzen™ Embedded V2000 EmbeddedPI-FP6 1.0.0.8
  • AMD AMD Ryzen™ Embedded V3000 EmbeddedPI-FP7r2 1.0.0.4

CISA SSVC

Exploitation
none
Automatable
no
Technical impact
partial
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
NVD 3.1 5.5 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

Affected products

  • AMD Ryzen™ 3000 Series Desktop Processors “Matisse”
  • AMD Ryzen™ 5000 Series Desktop Processors “Vermeer”
  • AMD Ryzen™ 5000 Series Desktop Processor with Radeon™ Graphics “Cezanne”
  • AMD Ryzen™ Threadripper™ 3000 Series Processors “Castle Peak” HEDT
  • AMD Ryzen™ Threadripper™ PRO Processors “Castle Peak” WS SP3
  • AMD Ryzen™ Threadripper™ PRO 3000WX Series Processors “Chagall” WS SP3
  • AMD Ryzen™ 6000 Series Mobile Processors with Radeon™ Graphics "Rembrandt"
  • AMD Ryzen™ 7035 Series Mobile Processors with Radeon™ Graphics "Rembrandt-R"
  • AMD Ryzen™ 5000 Series Mobile Processors with Radeon™ Graphics "Barcelo"
  • AMD Ryzen™ 7030 Series Mobile Processors with Radeon™ Graphics “Barcelo-R”
  • AMD AMD EPYC™ Embedded 7003
  • AMD AMD Ryzen™ Embedded 5000
  • AMD AMD Ryzen™ Embedded V2000
  • AMD AMD Ryzen™ Embedded V3000

Classification

Weakness
  • CWE-824 Access of Uninitialized Pointer
  • CWE-665 Improper Initialization

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.