CVE-2025-8876
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 · uneditedImproper Input Validation vulnerability in N-able N-central allows OS Command Injection.This issue affects N-central: before 2025.3.1.
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 confidenceN-able N-central before version 2025.3.1 contains an improper input validation vulnerability that allows authenticated attackers to inject and execute arbitrary operating system commands, likely through unsanitized user input being passed to system calls.
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< 2025.3.1CVSS 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
- Network
- Complexity
- Low
- Privileges
- Low
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- High
- Availability
- High
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
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 installed N-able N-central versionLocate the N-central application version through the web management interface (typically found in Help > About or System > Status), or check the installer/upgrade package if you have on-premise access. Compare the version number to 2025.3.1.Affected if The installed version is any release prior to 2025.3.1 (e.g., 2025.2.x, 2024.x, earlier).
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Confirm N-central service is running and accessibleVerify the N-central web management interface is reachable over the network on the expected port (typically 443 or 8080 for HTTPS). Check if the service is actively listening on its management ports.Affected if The N-central management interface is exposed and reachable over the network, allowing authenticated attackers to interact with the application.
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Verify user authentication is required for the vulnerable code pathConfirm that the N-central application requires valid credentials for access to the management functions where the input validation flaw exists. This is an authenticated attack vector.Affected if Valid user credentials can be used to access N-central, meaning any compromised or weak account could enable exploitation.
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Review access and audit logs for suspicious command executionExamine N-central system logs, audit logs, and access logs for entries containing unusual or unexpected shell command patterns, especially those involving shell metacharacters (|, ;, &, $) in parameters that should be sanitized.Affected if Logs show command injection attempts or unexpected command execution patterns originating from user inputs.
A user is affected if their N-central installation version is below 2025.3.1 and the management interface is network-accessible to authenticated users.
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 · scoped2025.3.1
Upgrade N-able N-central to version 2025.3.1 or later to remediate this vulnerability; apply network segmentation and least-privilege access controls as compensating measures until the upgrade is completed.
2025.3.1
- Upgrade N-able N-central to version 2025.3.1 or later to remediate the OS Command Injection vulnerability.
- Verify the upgrade was successful and the system is functioning normally.
- Review N-able's official release notes for 2025.3.1 for any additional post-upgrade requirements.
Generated from the published advisory — verify against the referenced sources before acting.
- Consultation2.0 h
- Implementation2.0 h
- Testing4.0 h
- Review / QA2.0 h
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Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2025-8876 — 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-2025-8876 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
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