Video Surveillance 7530pd FirmwareOperating system · Cisco
CVE-2021-1596
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 · uneditedMultiple vulnerabilities in the Link Layer Discovery Protocol (LLDP) implementation for Cisco Video Surveillance 7000 Series IP Cameras could allow an unauthenticated, adjacent attacker to cause a memory leak, which could lead to a denial of service (DoS) condition on an affected device. These vulnerabilities are due to incorrect processing of certain LLDP packets at ingress time. An attacker could exploit these vulnerabilities by sending crafted LLDP packets to an affected device. A successful exploit could allow the attacker to cause the affected device to continuously consume memory, which could cause the device to crash and reload, resulting in a DoS condition. Note: LLDP is a Layer 2 protocol. To exploit these vulnerabilities, an attacker must be in the same broadcast domain as the affected device (Layer 2 adjacent).
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 confidenceMultiple vulnerabilities in the LLDP implementation of Cisco Video Surveillance 7000 Series IP Cameras allow an adjacent unauthenticated attacker to send malformed LLDP packets that cause a memory leak. The device continuously consumes memory until it crashes and reloads, resulting in denial of 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 data
Video Surveillance 7530pd FirmwareOperating system
< 2.12.4
Video Surveillance 7070 FirmwareOperating system
< 2.12.4CVSS 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
- Adjacent
- Complexity
- Low
- Privileges
- None
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- None
- Integrity
- None
- Availability
- High
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/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 camera modelAccess the device web interface or CLI and verify the exact model number (e.g., Cisco Video Surveillance 7530pd or 7070)Affected if Model is 7530pd or 7070
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Check the installed firmware versionNavigate to the device management interface, typically under 'System' or 'Administration' > 'Firmware', and note the installed firmware versionAffected if Firmware version is below 2.12.4 (e.g., 2.12.3, 2.11.x, etc.)
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Verify LLDP is enabledAccess the device network settings (usually under 'Network' > 'Protocols' or 'LLDP settings') and confirm whether Link Layer Discovery Protocol is turned onAffected if LLDP is enabled on the device
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Assess network accessibilityReview the network segment where the camera is deployed and verify whether untrusted or non-administrative devices can send traffic to the camera's Layer 2 segmentAffected if The camera is accessible from an untrusted or shared Layer 2 network segment
The device is affected if it is a 7530pd or 7070 camera running firmware below version 2.12.4 AND LLDP is enabled, making it vulnerable to the memory leak DoS from malformed LLDP packets.
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 data2.12.4
Disable LLDP on affected devices via the device management interface, or apply the Cisco firmware update when available. If LLDP is required for network operations, implement Layer 2 network segmentation to restrict access to trusted devices only.
Fix this in Video Surveillance 7530pd Firmware
Scoped from the published advisory
- Consultation6.0 h
- Implementation12.0 h
- Testing8.0 h
- Review / QA4.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $8,448.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2021-1596 — 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-2021-1596 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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- Version or environment caveats, and links to real fixes
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