CVE-2015-4059
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 · uneditedHeap-based buffer overflow in the License Server (LicenseServer.exe) in Wavelink Terminal Emulation (TE) allows remote attackers to execute arbitrary code via a large HTTP header.
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 confidenceHeap-based buffer overflow in the LicenseServer.exe component of Wavelink Terminal Emulation allows remote unauthenticated attackers to execute arbitrary code by sending specially crafted large HTTP headers to the license server service.
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 dataall versionsCVSS 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
- Authentication
- None
- Confidentiality
- Complete
- Integrity
- Complete
- Availability
- Complete
AV:N/AC:L/Au:N/C:C/I:C/A:C
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 if LicenseServer.exe is runningOn Windows systems, open Task Manager or run 'tasklist | findstr LicenseServer.exe' via command prompt. On servers, check services via 'sc query' or look in Windows Services for License Server service.Affected if LicenseServer.exe process or service is found running on the system
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Confirm Wavelink Terminal Emulation installationCheck Program Files for Wavelink folder, or look in Windows Registry under HKLM\SOFTWARE\Wavelink, or use 'wmic product get name,version' to list installed software.Affected if Wavelink Terminal Emulation is installed regardless of version (all versions affected)
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Check network exposure of license server portRun 'netstat -an | findstr LISTENING' to identify listening ports, or use a network scanner to check which ports are exposed externally. The license server typically listens on port 8080 or a configurable port.Affected if License server port (commonly 8080) is bound to an external interface or accessible from untrusted networks
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Review license server logs for异常Check logs in the Wavelink installation directory, typically in a 'Logs' or 'License' subfolder, for entries with excessively large header requests or error messages related to memory allocation.Affected if Logs show large HTTP header requests or buffer overflow error messages
A user is affected if LicenseServer.exe from Wavelink Terminal Emulation is running and its port is network-accessible, since all versions contain this vulnerability.
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 patches or update to a patched version of Wavelink Terminal Emulation; if patches unavailable, restrict network access to the License Server port and consider network segmentation.
- Consultation4.0 h
- Implementation3.0 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-2015-4059 — 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-2015-4059 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