CVE-2018-15128
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 · uneditedAn issue was discovered in Polycom Group Series 6.1.6.1 and earlier, HDX 3.1.12 and earlier, and Pano 1.1.1 and earlier. A remote code execution vulnerability exists in the content sharing functionality because of a Buffer Overflow via crafted packets.
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 · high confidenceA critical buffer overflow vulnerability in Polycom video conferencing devices (Group Series, HDX, and Pano) allows remote attackers to execute arbitrary code via crafted packets in the content sharing functionality. The flaw is exploitable remotely without authentication due to insufficient bounds checking.
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<= 6.1.6.1<= 3.1.12<= 1.1.1CVSS 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
- None
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- High
- Availability
- High
CVSS:3.0/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 the Polycom device modelLog into the device admin interface or check the device label/backup configuration to determine if the device is a Polycom Group Series, HDX, or Pano modelAffected if The device is any of these three models and the firmware version falls within or below the affected ranges
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Check the installed firmware versionAccess the device web interface or admin menu and navigate to System Information or About page to view the current firmware version. Alternatively, check via SNMP or the device backup configuration fileAffected if The firmware version is 6.1.6.1 or lower for Group Series, 3.1.12 or lower for HDX, or 1.1.1 or lower for Pano
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Verify if content sharing is enabledCheck the device configuration settings for content sharing, presentation, or whiteboard features. This is typically found in the call settings or media configuration section of the admin interfaceAffected if Content sharing functionality is enabled on the device
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Assess network exposure of content sharing servicesScan the network for open ports associated with content sharing (typically ports used for H.239 or BFCP protocols). Review firewall rules and network access control lists to determine if these services are accessible from untrusted networksAffected if Content sharing ports are exposed to the internet or untrusted network segments without proper access controls
The environment is affected if a Polycom Group Series (firmware <=6.1.6.1), HDX (firmware <=3.1.12), or Pano (firmware <=1.1.1) device has content sharing enabled and is accessible over the network, since the vulnerability allows remote code execution without authentication via crafted packets to the content sharing feature.
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 dataUpgrade affected Polycom devices to the latest firmware versions (Group Series >6.1.6.1, HDX >3.1.12, Pano >1.1.1). If immediate patching is not possible, restrict network access to content sharing ports and implement network segmentation to limit exposure.
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- Implementation3.0 h
- Testing3.0 h
- Review / QA2.0 h
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Free · runs locallyCheck whether your project pulls in CVE-2018-15128 — 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-2018-15128 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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