CVE-2023-52950
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 · uneditedMissing encryption of sensitive data vulnerability in login component in Synology Active Backup for Business Agent before 2.7.0-3221 allows adjacent man-in-the-middle attackers to obtain user credential via unspecified vectors.
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 · moderate confidenceThe Synology Active Backup for Business Agent transmits user credentials in cleartext during the login process, allowing attackers on the same network segment to intercept authentication credentials through man-in-the-middle attacks. This affects versions prior to 2.7.0-3221.
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< 2.7.0-3221CVSS 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
- Adjacent
- Complexity
- High
- Privileges
- None
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- None
- Availability
- None
CVSS:3.1/AV:A/AC:H/PR:N/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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Verify if Synology Active Backup for Business Agent is installedCheck for the presence of the agent service or executable. On Windows, look for the service named 'Synology Active Backup for Business Agent' in Services.msc or check for installation in Program Files. On Linux, check for /usr/syno/activebackup/agent or similar installation directories.Affected if The agent software is present on the system
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Determine the installed version of the agentOpen the Synology Active Backup for Business Agent application and view the About or Version information typically found in the Help menu, or check the executable properties of the agent binary for its version metadata.Affected if Unable to determine the version or version is below 2.7.0-3221
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Confirm the vulnerability conditionCompare the identified version against the affected range: any version prior to 2.7.0-3221 is vulnerable. The vulnerability is exploitable when the agent communicates with the Active Backup for Business server over the network.Affected if Installed version is less than 2.7.0-3221 and the agent is used to connect to a server
The environment is affected if Synology Active Backup for Business Agent is installed with a version number lower than 2.7.0-3221 and the agent is actively connecting to a server.
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 · scoped2.7.0-3221
Upgrade Synology Active Backup for Business Agent to version 2.7.0-3221 or later to implement proper encryption of sensitive data in transit during authentication.
2.7.0-3221 or later
- Verify current Active Backup for Business Agent version by opening the application and checking 'Help' > 'About'
- Download the latest Synology Active Backup for Business Agent from the official Synology download center at www.synology.com
- Stop any backup tasks currently running to ensure a clean upgrade
- Run the installer and follow the on-screen prompts to upgrade the agent
- After installation, verify the version shows 2.7.0-3221 or later in 'Help' > 'About'
- Reconnect the agent to your Synology NAS and resume backup operations
Generated from the published advisory — verify against the referenced sources before acting.
- Consultation2.0 h
- Implementation2.0 h
- Testing3.0 h
- Review / QA1.0 h
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Free · runs locallyCheck whether your project pulls in CVE-2023-52950 — 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-2023-52950 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
- No spam, self-promotion, credentials, or personal data