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Video Surveillance 7530pd FirmwareOperating system · Cisco

CVE-2021-1564

MEDIUM · 6.5 CVSS v3.1 Published 2021-06-04
Fix available
A fix is available. Upgrade to 2.12.3 or later.
See remediation →
70/100
Remediation priority · Elevated
No privileges Zero-click

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 · unedited
Multiple vulnerabilities in the implementation of the Cisco Discovery Protocol and Link Layer Discovery Protocol (LLDP) 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 Cisco Discovery Protocol and LLDP packets at ingress time. An attacker could exploit these vulnerabilities by sending crafted Cisco Discovery Protocol or 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: Cisco Discovery Protocol and LLDP are Layer 2 protocols. 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 confidence

This vulnerability exists in the Cisco Discovery Protocol (CDP) and LLDP packet processing logic of Cisco Video Surveillance 7000 Series IP Cameras. Specifically, crafted CDP or LLDP packets sent to an affected device cause incorrect memory handling at ingress, leading to a memory leak. Repeated exploitation causes memory exhaustion, device crash, and reload, resulting in persistent DoS.

MitigationApply the Cisco firmware update when released. If patches are unavailable, consider disabling CDP and LLDP protocols on affected cameras if not required for operations, or enforce Layer 2 network segmentation to limit exposure to trusted adjacent attackers only.

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
Affected:< 2.12.3
Video Surveillance 7070 FirmwareOperating system
Affected:< 2.12.3

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
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 checks

Work through these to decide whether this CVE applies to you.

  1. Identify the IP camera model
    Access the camera's web interface or use SNMP/cLI commands (such as 'show version' via telnet/SSH) to determine the exact model number (either Cisco Video Surveillance 7530pd or 7070)
    Affected if The model is a Cisco Video Surveillance 7530pd or 7070 series camera
  2. Check the installed firmware version
    In the camera's web interface, navigate to Administration > System Setup > Firmware Upgrade, or use the CLI command 'show version' via telnet/SSH to display the current firmware version
    Affected if The firmware version is lower than 2.12.3 (for example, 2.12.2, 2.11.x, or earlier)
  3. Verify CDP protocol status
    Access the camera's web interface under Network Settings > Protocol Settings, or use the CLI command 'show cdp neighbors' via telnet/SSH to determine if Cisco Discovery Protocol is enabled
    Affected if CDP is enabled and the camera is on an untrusted Layer 2 network segment
  4. Verify LLDP protocol status
    Access the camera's web interface under Network Settings > Protocol Settings, or use the CLI command 'show lldp neighbors' via telnet/SSH to determine if Link Layer Discovery Protocol is enabled
    Affected if LLDP is enabled and the camera is on an untrusted Layer 2 network segment
  5. Assess network exposure to untrusted adjacent attackers
    Review the Layer 2 network topology to determine if the camera's VLAN or physical segment contains untrusted or unknown devices that could send crafted CDP or LLDP packets
    Affected if The camera is reachable by untrusted adjacent attackers who can send malicious CDP or LLDP packets

The camera is affected if it is a Cisco Video Surveillance 7530pd or 7070 model running firmware version lower than 2.12.3, AND CDP or LLDP is enabled, AND the device is accessible to untrusted adjacent attackers on the same Layer 2 network.

Generated from the published advisory. Verify against your own configuration.

Check your environment

Paste your version and any relevant configuration and it will be compared against the affected criteria above. Do not include secrets or credentials.

AI-assisted, checked against the advisory. Informational, not a guarantee.

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 data
Upgrade available Upgrade to 2.12.3 or later
Fixed in 2.12.3
Interim mitigation

Apply the Cisco firmware update when released. If patches are unavailable, consider disabling CDP and LLDP protocols on affected cameras if not required for operations, or enforce Layer 2 network segmentation to limit exposure to trusted adjacent attackers only.

Fix this in Video Surveillance 7530pd Firmware Scoped from the published advisory
  • Consultation2.0 h
  • Implementation4.0 h
  • Testing2.0 h
  • Review / QA1.0 h
9.0 hours of engineering $1,600
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References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.

Primary sources

Practitioner notes

Contributed

Peer-ranked notes from engineers who’ve handled CVE-2021-1564 in production — separate from our analysis above.

No notes yet

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What this is

A place for practitioners to share what actually worked: a mitigation you’ve tested, a configuration change, a version- or environment-specific caveat, or a link to a verified patch. The most useful notes rise to the top as peers upvote them, so the signal stays high.

What belongs here
  • 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