CVE-2025-12748Public exploitHinoki check available

Daemon crash via unbounded XML vCPU allocation

Published Nov 11, 2025 · Updated Nov 11, 2025

Resource exhaustion in libvirt 11.9.0 and earlier allows local users with limited permissions to crash the daemon via crafted domain XML. virDomainVcpuParse accepts an unbounded vCPU count, and virDomainDefSetVcpusMax expands the vCPU array before the object ACL check. An authenticated local libvirt connection with XML-submission access is required; exploitation can exhaust host memory and interrupt virtual-machine management.

CVSS severity5.5
Medium
EPSS probability0.21%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkAvailable
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Summary

What happened

Resource exhaustion in libvirt 11.9.0 and earlier allows local users with limited permissions to crash the daemon via crafted domain XML. virDomainVcpuParse accepts an unbounded vCPU count, and virDomainDefSetVcpusMax expands the vCPU array before the object ACL check. An authenticated local libvirt connection with XML-submission access is required; exploitation can exhaust host memory and interrupt virtual-machine management.

The record

CVE
CVE-2025-12748
Published
Nov 11, 2025
Updated
Nov 11, 2025
Vendor
389 Directory Server
Product
Red Hat Enterprise Linux 10
Classifications
CWE-770, T1499
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Nov 11, 2025CVE publishedPublication date reported by the CVE source.
  2. Nov 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 versions are unavailable in this record. Check the vendor advisory for version and patch details.

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

389 Directory Server · Red Hat Enterprise Linux 10Affected versions are unavailable in this record.
389 Directory Server · Red Hat Enterprise Linux 9Affected versions are unavailable in this record.
389 Directory Server · Red Hat Enterprise Linux 8Affected versions are unavailable in this record.

Published CVSS scores

5.5Red HatCVSS:3.1/AV:L/AC:L/PR:L/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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

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
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-770Allocation of Resources Without Limits or Throttling
T1499Endpoint Denial of Service

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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