CVE-2025-58144Network attack vector

Guest-triggered host crash via incorrect page assertion

Published Sep 11, 2025 · Updated Sep 11, 2025

NULL pointer dereference in Xen 4.12 and later on Arm allows guest OS users to crash the hypervisor through foreign-page mapping. The p2m_get_page_from_gfn path relies on an assertion for a reachable foreign-page ownership case instead of handling it, allowing a NULL page result to reach a dereference in release builds. An unprivileged guest on an Arm host can reach the path; the established impact is a whole-host crash, while escalation and disclosure remain unconfirmed.

CVSS severity7.5
High
EPSS probability0.45%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

NULL pointer dereference in Xen 4.12 and later on Arm allows guest OS users to crash the hypervisor through foreign-page mapping. The p2m_get_page_from_gfn path relies on an assertion for a reachable foreign-page ownership case instead of handling it, allowing a NULL page result to reach a dereference in release builds. An unprivileged guest on an Arm host can reach the path; the established impact is a whole-host crash, while escalation and disclosure remain unconfirmed.

The record

CVE
CVE-2025-58144
Published
Sep 11, 2025
Updated
Sep 11, 2025
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-476, T1499.004
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Sep 11, 2025CVE publishedPublication date reported by the CVE source.
  2. Sep 11, 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?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

7.5CISA-ADPCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

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)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-476NULL Pointer Dereference
T1499.004Application or System Exploitation

Public exploit references

No public exploit references are available in this record.

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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