CVE-2025-1713Network attack vector

Host-wide denial of service via unsafe bridge lookup

Published Jul 17, 2025 · Updated Jul 17, 2025

Deadlock in Xen 4.0 and later allows guest OS users to hang an entire host through certain legacy PCI device pass-through. During interrupt-remapping setup, the VT-d code looks up an upstream PCI bridge while executing in a context where the lookup's lock cannot safely be acquired. Exposure requires x86 Intel IOMMU hardware and an affected legacy PCI device assigned to an unprivileged guest.

CVSS severity7.5
High
EPSS probability0.72%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Deadlock in Xen 4.0 and later allows guest OS users to hang an entire host through certain legacy PCI device pass-through. During interrupt-remapping setup, the VT-d code looks up an upstream PCI bridge while executing in a context where the lookup's lock cannot safely be acquired. Exposure requires x86 Intel IOMMU hardware and an affected legacy PCI device assigned to an unprivileged guest.

The record

CVE
CVE-2025-1713
Published
Jul 17, 2025
Updated
Jul 17, 2025
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-833, T1499.004
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jul 17, 2025CVE publishedPublication date reported by the CVE source.
  2. Jul 17, 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-833Deadlock
T1499.004Endpoint Denial of Service: Application 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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