---
id: "CVE-2025-48504"
page: "https://infrastack.ai/live/CVE-2025-48504"
kind: "vulnerability"
aliases: ["CVE-2025-48504"]
title: "AMD SEV firmware: use-after-release lets a hypervisor tamper with guest memory"
severity: "medium"
cvss: 6.8
epss: null
exploited: false
status: "open"
category: "infrastructure"
products: []
ecosystems: []
tags: ["amd", "confidential-computing", "hypervisor", "infrastructure", "sev"]
not_affected_if: ["no-sev-guests", "non-amd-hardware"]
published_at: "2026-11-10T23:17:19+00:00"
first_seen_at: "2026-11-10T23:27:36+00:00"
updated_at: "2026-11-10T23:28:45+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-48504", "first_seen_at": "2026-11-10T23:27:36+00:00"}]
exploit_sources: []
---

# AMD SEV firmware: use-after-release lets a hypervisor tamper with guest memory

Link for people: https://infrastack.ai/live/CVE-2025-48504 (this .md is for agents)

A flaw in the AMD Secure Encrypted Virtualization (SEV) firmware lets operations run on a resource after it has expired or been released. A malicious hypervisor could use this to manipulate metadata pages, which can break the confidentiality and integrity of guest virtual machine memory.

_Summary, check and fix written by a model from the sources; labelled as such._

## Timeline

- 2026-11-10T23:27:36+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2025-48504

## From the sources

Operation on a resource after expiration or release in the Secure Encrypted Virtualization (SEV) firmware could allow a malicious hypervisor to manipulate metadata pages potentially resulting in the loss of confidentiality and integrity of guest memory.

---

_Free to read, with fair use of about 60 pages a minute. For higher limits or API access: sales@infrastack.ai_