CVE-2024-2193Public exploit

Host-memory disclosure via speculative lock bypass

Published Mar 15, 2024 · Updated Apr 30, 2025

Information disclosure in Xen Hypervisor allows local users to infer arbitrary host memory, including memory assigned to other guests. Synchronization loops rely on conditional branches that Spectre-v1 mistraining bypasses transiently, permitting concurrent execution inside guarded critical regions. All Xen versions are listed as affected, but Xen reports no known product gadget, so product-specific exploitation remains unverified.

CVSS severity5.7
Medium
EPSS probability1.27%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Information disclosure in Xen Hypervisor allows local users to infer arbitrary host memory, including memory assigned to other guests. Synchronization loops rely on conditional branches that Spectre-v1 mistraining bypasses transiently, permitting concurrent execution inside guarded critical regions. All Xen versions are listed as affected, but Xen reports no known product gadget, so product-specific exploitation remains unverified.

The record

CVE
CVE-2024-2193
Published
Mar 15, 2024
Updated
Apr 30, 2025
Vendor
Xen Project
Product
Xen Hypervisor
Classifications
CWE-362, T1005
Attack vector
local
Privileges
admin

Timeline

How it unfolded

  1. Mar 15, 2024CVE publishedPublication date reported by the CVE source.
  2. Apr 30, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=consult Xen advisory XSA-453

What conditions does exploitation require?

Attack vectorlocal
Required privilegesadmin

What is affected?

Xen Project · Xen Hypervisorversion=consult Xen advisory XSA-453

Published CVSS scores

5.7CISA ADPCVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesadmin
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-362Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')
T1005Data from Local System

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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