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CVE-2024-40767VulnerabilityPublished Updated

CVE-2024-40767: n/a

Source CVE Database V5

0

Mentioned vulnerabilities

Not known to be exploited · CVSS 6.5 Medium · fixed in 29.1.1 : update OpenStack Nova when convenient.

Data as of 26 Oct 2026, 07:57 UTC

CVSS 3.1 base score
6.5Medium
How severe the flaw is on the 0–10 CVSS scale.
EPSS
0.9% chance of exploitation in 30 days – higher than 60% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Affects
OpenStack Nova before 27.4.1
Patch
Available – fixed in 29.1.1, 28.2.1, 27.4.1
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 24 Jul 2024

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponised: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 2026-10-26.

What to do

AI-suggested

European organizations should prioritize upgrading OpenStack Nova to versions 27.4.1, 28.2.1, or 29.1.1 or later, where this vulnerability is fixed. If you cannot patch yet, strict access controls should be enforced to limit authenticated user privileges, minimizing the number of users able to upload or manipulate VM images. Implement rigorous monitoring and logging of image upload activities to detect anomalous or suspicious image formats, especially those involving QCOW2 or VMDK images with backing files. Employ network segmentation to isolate management interfaces and restrict image upload capabilities to trusted administrators. Conduct thorough audits of existing images to identify and remove any potentially malicious or crafted images. Additionally, review and harden Nova configuration settings related to image handling and file access. Organizations should also consider deploying runtime security tools that can detect unusual file access patterns or attempts to read unauthorized files. Finally, maintain an incident response plan tailored to cloud infrastructure compromises to quickly contain any exploitation attempts.

Description

In OpenStack Nova before 27.4.1, 28 before 28.2.1, and 29 before 29.1.1, by supplying a raw format image that is actually a crafted QCOW2 image with a backing file path or VMDK flat image with a descriptor file path, an authenticated user may convince systems to return a copy of the referenced file's contents from the server, resulting in unauthorized access to potentially sensitive data. All Nova deployments are affected. NOTE: this issue exists because of an incomplete fix for CVE-2022-47951 and CVE-2024-32498.

References

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