CVE-1999-0896
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 · uneditedBuffer overflow in RealNetworks RealServer administration utility allows remote attackers to execute arbitrary commands via a long username and password.
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 buffer overflow vulnerability exists in the RealNetworks RealServer administration utility. The vulnerability is triggered by submitting excessively long username and password strings during authentication to the admin interface, which overflows the buffer and allows remote attackers to execute arbitrary commands on the target system.
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= 1.0CVSS 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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Confirm RealServer installationIdentify if RealNetworks RealServer software is installed on the system by checking for running processes or installed packages related to 'realserver' or 'real server'. On Linux, check /usr/local/ or common installation directories. On Windows, check Program Files.Affected if RealServer G2 version 1.0 is installed and running
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Determine installed RealServer versionRun the appropriate command to query the RealServer version. This is typically available via the admin web interface, the server status page, or by running 'realserver -v' or similar version flag if available from the binary.Affected if The installed version is RealServer G2 build 1.0 or any version matching '1.0' in the product name
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Verify admin interface is enabledCheck if the RealServer administration interface is enabled and accessible. This is typically accessible via HTTP on port 7078 (admin port). Verify the service is listening on the admin port.Affected if The admin interface port (commonly 7078) is open and responding
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Assess network exposure of admin interfaceReview firewall rules and network configuration to determine if the admin interface port is accessible from network segments other than localhost/management network. Use 'netstat -an' or similar to identify listening ports and their bind addresses.Affected if The admin interface port is bound to 0.0.0.0 or an exposed network interface accessible to untrusted users
A system is affected if RealServer G2 version 1.0 is installed with its admin interface exposed to the network where attackers can submit long authentication strings.
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 available vendor patches for RealServer; if the product is end-of-life, migrate to a supported media server solution and implement network segmentation to limit exposure to the administration interface.
- Consultation4.0 h
- Implementation8.0 h
- Testing6.0 h
- Review / QA4.0 h
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Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-1999-0896 — 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-1999-0896 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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