CVE-2024-40767Network attack vector

Authenticated server-file disclosure via crafted disk images

Published Jul 24, 2024 · Updated Nov 4, 2025

File disclosure in affected OpenStack Nova releases allows remote authenticated users to read server files through crafted disk images. Nova processes a raw-labeled image as QCOW2 or VMDK and follows its attacker-supplied backing-file or descriptor path when returning data. Affected releases are 27.4.0 and earlier, 28.0.0 through 28.2.0, and 29.0.0 through 29.1.0; all deployment configurations are exposed.

CVSS severity5.3
Medium
EPSS probability0.94%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

File disclosure in affected OpenStack Nova releases allows remote authenticated users to read server files through crafted disk images. Nova processes a raw-labeled image as QCOW2 or VMDK and follows its attacker-supplied backing-file or descriptor path when returning data. Affected releases are 27.4.0 and earlier, 28.0.0 through 28.2.0, and 29.0.0 through 29.1.0; all deployment configurations are exposed.

The record

CVE
CVE-2024-40767
Published
Jul 24, 2024
Updated
Nov 4, 2025
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-552, CWE-436, T1005
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Jul 24, 2024CVE publishedPublication date reported by the CVE source.
  2. Nov 4, 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 privilegesauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

5.3GitHub Advisory DatabaseCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA: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)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-552Files or Directories Accessible to External Parties
CWE-436Interpretation Conflict
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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