CVE-2025-13193

Guest data disclosure via world-readable snapshot overlays

Published Nov 17, 2025 · Updated Jun 29, 2026

Improper permissions in libvirt before 11.10.0 allow local users to read VM data from external inactive snapshot overlays. In qemuSnapshotCreateQcow2Files, libvirt invokes qemu-img without setting a restrictive umask, so the new qcow2 overlay inherits mode 0644. Exploitation requires a local account on a virtualization host and an external snapshot created while the VM is shut down; exposure is limited to guest blocks written after that snapshot.

CVSS severity5.5
Medium
EPSS probability0.12%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper permissions in libvirt before 11.10.0 allow local users to read VM data from external inactive snapshot overlays. In qemuSnapshotCreateQcow2Files, libvirt invokes qemu-img without setting a restrictive umask, so the new qcow2 overlay inherits mode 0644. Exploitation requires a local account on a virtualization host and an external snapshot created while the VM is shut down; exposure is limited to guest blocks written after that snapshot.

The record

CVE
CVE-2025-13193
Published
Nov 17, 2025
Updated
Jun 29, 2026
Vendor
389 Directory Server
Product
Red Hat Enterprise Linux 10
Classifications
CWE-276, T1005
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Nov 17, 2025CVE publishedPublication date reported by the CVE source.
  2. Jun 29, 2026Record 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.
libvirt · libvirtversion=0 <11.10.0
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:H/I:N/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
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-276Incorrect Default Permissions
T1005Data from Local System

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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