CVE-2025-21533
Official description Straight from the sourceThe vendor's or NVD's own wording, published unedited. Authoritative, but often terse — it says what broke, rarely what to do.
NVD · uneditedVulnerability in the Oracle VM VirtualBox product of Oracle Virtualization (component: Core). Supported versions that are affected are Prior to 7.0.24 and prior to 7.1.6. Easily exploitable vulnerability allows low privileged attacker with logon to the infrastructure where Oracle VM VirtualBox executes to compromise Oracle VM VirtualBox. Successful attacks of this vulnerability can result in unauthorized access to critical data or complete access to all Oracle VM VirtualBox accessible data. CVSS 3.1 Base Score 5.5 (Confidentiality impacts). CVSS Vector: (CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N).
Technical summary Written by usOur analysis, written from the advisory, the CVSS vector and the affected-version data. It adds context the advisory leaves out, and never invents facts that are not in the source.
dbcve analysis · high confidenceOracle VM VirtualBox contains a vulnerability in its Core component that allows a low-privileged attacker with local access to the infrastructure to gain unauthorized high confidentiality access to data accessible by VirtualBox. The vulnerability affects versions prior to 7.0.24 and 7.1.6. Exploitation is local (AV:L), low complexity, and requires no user interaction.
Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.
Affected products & versions What the vendor confirmedThe version ranges the vendor confirmed as vulnerable. If your version sits inside a range here, treat yourself as exposed until you have upgraded.
NVD · CPE data>= 7.0.0, < 7.0.24>= 7.1.0, < 7.1.6CVSS breakdown How the score is builtThe industry scoring standard. It rates how the flaw is reached, what it takes to exploit, and what an attacker gains — the score is derived from those, not the other way round.
From the vector- Attack vector
- Local
- Complexity
- Low
- Privileges
- Low
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- None
- Availability
- None
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
Am I affected? How to checkSteps we derive from the advisory and the affected-version data, so you can decide whether this CVE reaches your setup. They are a guide, not a scan — your own configuration is the authority.
dbcve checksWork through these to decide whether this CVE applies to you.
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Identify VirtualBox installationRun 'vboxmanage --version' on the command line. On Windows, you can also check Programs and Features or the VirtualBox application Help > About. On Linux, check the package manager (dpkg -l | grep virtualbox or rpm -qa | grep VirtualBox).Affected if VirtualBox is installed and the version is shown
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Compare installed version against affected rangesCheck if the version output from step 1 falls within 7.0.0 to 7.0.23, or 7.1.0 to 7.1.5. These are the vulnerable version ranges.Affected if Version is 7.0.x where x is less than 24, or 7.1.x where x is less than 6
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Verify VirtualBox is running or configuredRun 'vboxmanage list vms' to see if any virtual machines are configured, or check if the VirtualBox service is active. This indicates VirtualBox is in use.Affected if VirtualBox is actively configured or running on the system
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Assess local access exposureDetermine if untrusted local users have access to the VirtualBox host system. The vulnerability requires local access to the infrastructure.Affected if Untrusted users can log into the host machine where VirtualBox is installed
You are affected if VirtualBox version is 7.0.0 through 7.0.23 or 7.1.0 through 7.1.5, and untrusted local users can access the host system.
Generated from the published advisory. Verify against your own configuration.
Remediation Closing itWhat it takes to close this. Where a vendor fix exists we point at it; where none exists we say so plainly, and can build one. Effort estimates are scoped from the advisory, not from your codebase.
dbcve · scoped7.0.247.1.6
Upgrade Oracle VM VirtualBox to version 7.0.24, 7.1.6, or later to remediate this vulnerability. In enterprise environments, validate the upgrade in a staging environment before production deployment.
7.0.24 or 7.1.6 (whichever is the latest in your minor release line)
- 1. Check current VirtualBox version by opening VirtualBox and going to Help > About, or running 'vboxmanage --version'
- 2. Download the appropriate fixed version (7.0.24 or 7.1.6) from the official Oracle website: https://www.virtualbox.org/wiki/Downloads
- 3. Ensure all virtual machines are powered off and backed up if necessary
- 4. Install the new version, overwriting the existing installation
- 5. After installation, verify the version matches the fixed release (7.0.24 or 7.1.6)
Generated from the published advisory — verify against the referenced sources before acting.
- Consultation2.0 h
- Implementation4.0 h
- Testing6.0 h
- Review / QA2.0 h
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Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2025-21533 — or any other known-vulnerable package — straight from your lock files. Free and open source; it runs locally and uploads nothing.
References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.
Primary sourcesPractitioner notes
ContributedPeer-ranked notes from engineers who’ve handled CVE-2025-21533 in production — separate from our analysis above.
The advisory tells you what broke. It rarely tells you what actually worked. If you’ve dealt with this one, that detail is what the next engineer is searching for.
- The version that genuinely resolved it — not the one the vendor claimed
- A config change or rule that shut the vector down
- A gotcha in the upgrade path that cost you an afternoon
No notes yet
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- Verified mitigations, workarounds, and config changes
- Version or environment caveats, and links to real fixes
- No weaponised exploit code, or anything meant to cause harm
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