CVE-2025-41426
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 · uneditedAffected Vertiv products contain a stack based buffer overflow vulnerability. An attacker could exploit this vulnerability to gain code execution on the device.
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 confidenceA stack-based buffer overflow vulnerability exists in multiple Vertiv products. This memory corruption flaw allows an attacker to overwrite stack memory beyond allocated bounds, potentially achieving arbitrary code execution on the affected device.
Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.
CVSS 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
- None
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- High
- Availability
- High
CVSS:3.1/AV:N/AC:L/PR:N/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 Vertiv devices in your environmentReview network inventories, asset management systems, or conduct network scans to enumerate Vertiv hardware (e.g., Liebert UPS systems, Geist PDUs, or other Vertiv infrastructure equipment). Note the exact model numbers and firmware versions installed.Affected if Any Vertiv product is found without confirmed patched firmware from the vendor.
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Locate firmware version informationAccess the device management interface (web UI, CLI, or SNMP) and navigate to the system information, about, or firmware status section. Record the exact firmware version string displayed.Affected if The installed firmware version cannot be confirmed as patched by Vertiv or does not match a known fixed version from vendor advisories.
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Determine if network management services are exposedCheck device network configuration to see if management interfaces (web GUI, SNMP, telnet, or proprietary management ports) are listening on accessible network segments. Review firewall rules and access control lists governing these services.Affected if The device management interface is reachable from untrusted or external network segments.
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Identify the vulnerable code pathReview Vertiv security advisories for CVE-2025-41426 to identify which specific service, feature, or API handles the vulnerable input that triggers the stack buffer overflow.Affected if The identified vulnerable service or feature is enabled and processing external input.
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Check for signs of exploitationReview device logs, network traffic captures, and intrusion detection alerts for evidence of anomalous memory access patterns, crashes, or unauthorized command execution attempts targeting the device.Affected if Logs show unexpected crashes, memory corruption indicators, or suspicious management activity.
You are affected if you have any Vertiv product running firmware that has not been confirmed patched for CVE-2025-41426, with management interfaces or vulnerable services exposed to network attackers.
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.
From vendor dataApply vendor-supplied patches or firmware updates immediately. If no patch is available, isolate affected devices on restricted network segments and monitor for exploitation attempts.
- Consultation6.0 h
- Implementation8.0 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-2025-41426 — 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-2025-41426 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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A place for practitioners to share what actually worked: a mitigation you’ve tested, a configuration change, a version- or environment-specific caveat, or a link to a verified patch. The most useful notes rise to the top as peers upvote them, so the signal stays high.
- 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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