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CVE-2025-54503Improper handling of overlap between protected memory ranges in the Secure Encrypted Virtualization (SEV) firmware could allow a…

Description

Improper handling of overlap between protected memory ranges in the Secure Encrypted Virtualization (SEV) firmware could allow a privileged attacker to cause misconfigurations in the RMP potentially resulting in loss of integrity.

Timeline

  1. ID reserved

    By AMD

  2. · 16 months later

    Published

  3. · 2 days later

    Record updated

Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.

Scores

CVSS scores of CVE-2025-54503, by who scored it
Scored byCVSSScoreVector
AMDCNA (assigner)4.0Medium5.9CVSS:4.0/AV:L/AC:L/AT:N/PR:H/UI:N/VC:N/VI:N/VA:N/SC:N/SI:H/SA:N
NVDNVD · Awaiting Analysis4.0Medium5.9CVSS:4.0/AV:L/AC:L/AT:N/PR:H/UI:N/VC:N/VI:N/VA:N/SC:N/SI:H/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
EPSS (exploitation in 30 days)
0.15% · top 96% of all CVEs (13 Nov 2026)
CISA SSVC
Exploitation: none · Automatable: no · Technical impact: partial
Loading the EPSS history…

The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 5.9.

Affected products

References

References1

Sources

The same CVE in the primary databases and aggregators, to check against.

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[![CVE-2025-54503](https://cveledger.app/badge/CVE-2025-54503.svg)](https://cveledger.app/cve/CVE-2025-54503)

Record last updated .