CVE-2025-9962
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 · uneditedA buffer overflow vulnerability in Novakon P series allows attackers to gain root permission without prior authentication.This issue affects P series: P – V2001.A.C518o2 until P-2.0.05 Build 2026.02.06 (commit d0f97fd9).
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 confidenceBuffer overflow vulnerability in Novakon P series industrial devices enables unauthenticated attackers to achieve privilege escalation to root access. The flaw exists across firmware versions from V2001.A.C518o2 through P-2.0.05 Build 2026.02.06, allowing remote compromise without any credentials.
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
- Authentication
- X
- User interaction
- None
- Scope
- X
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
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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Retrieve the device firmware versionAccess the Novakon P series device web interface (typically http://<device-ip>/) and navigate to System Info or Settings > Firmware, or log into the device CLI and run 'version' or 'show firmware' commandAffected if The displayed firmware version falls within the range V2001.A.C518o2 through P-2.0.05 Build 2026.02.06 (inclusive)
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Identify the exact firmware build stringNote the complete firmware build string displayed (e.g., 'P-2.0.05 Build 2026.02.06' or similar) - look for both the version number and the build date in the system information pageAffected if The build string contains a version at or before P-2.0.05 Build 2026.02.06, or contains V2001.A.C518o2 or later versions up to that threshold
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Verify network exposure of the deviceDetermine if the device management interface or any services are directly accessible from untrusted networks by reviewing network firewall rules, VLAN configuration, or performing a port scan (nmap <device-ip>)Affected if The device management ports (commonly HTTP/HTTPS on 80/443 or custom industrial protocols) are reachable from outside the trusted internal network
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Check for unauthorized access indicatorsReview device logs, authentication logs, or network intrusion detection alerts for suspicious access attempts, especially from external IPs or failed root privilege escalation attemptsAffected if Any unauthorized access attempts or privilege escalation anomalies are logged, indicating active exploitation attempts in the environment
The environment is affected if the Novakon P series device runs firmware version V2001.A.C518o2 through P-2.0.05 Build 2026.02.06 and is network-accessible to untrusted parties.
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 dataImmediately upgrade Novakon P series firmware to a version beyond P-2.0.05 Build 2026.02.06 once available from the vendor. If no patch exists, isolate affected devices on restricted network segments and monitor for unauthorized access attempts.
- Consultation8.0 h
- Implementation16.0 h
- Testing12.0 h
- Review / QA6.0 h
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Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2025-9962 — 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-2025-9962 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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