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CVE Record

CVE-2020-3507: Cisco Video Surveillance 8000 Series IP Cameras Cisco Discovery Protocol Remote Code Execution and Denial of Service Vulnerabilities

Multiple vulnerabilities in the Cisco Discovery Protocol implementation for Cisco Video Surveillance 8000 Series IP Cameras could allow an unauthenticated, adjacent attacker to execute code remotely or cause a reload of an affected IP camera. These vulnerabilities are due to missing checks when the IP cameras process a Cisco Discovery Protocol packet. An attacker could exploit these vulnerabilities by sending a malicious Cisco Discovery Protocol packet to the targeted IP camera. A successful exploit could allow the attacker to execute code on the affected IP camera or cause it to reload unexpectedly, resulting in a denial of service (DoS) condition. Note: Cisco Discovery Protocol 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).

HighCVSS 8.8Not KEV-listedUpdated
Glexia's TakeAutomated analysishigh

Security readout for executives and security teams

Plain-English summary

This flaw affects Cisco Video Surveillance 8000 Series IP Cameras. A nearby network attacker on the same Layer 2 broadcast domain could crash a camera or potentially run code on it. The business concern is loss of surveillance availability and compromise of camera systems, but the source bundle does not show internet-wide remote exposure.

Executive priority

Treat this as high priority where affected cameras protect facilities, regulated areas, or critical operations. The main risk is camera compromise or surveillance outage from an attacker already on the local network segment.

Technical view

CVE-2020-3507 is caused by missing input checks in the cameras' Cisco Discovery Protocol processing. An unauthenticated adjacent attacker could send a malicious CDP packet to trigger remote code execution or an unexpected reload. CVSS 3.1 is 8.8 high with adjacent network attack vector and no required privileges or user interaction.

Likely exposure

Exposure is limited to Cisco Video Surveillance 8000 Series IP Cameras that process Cisco Discovery Protocol traffic where an attacker can reach the same Layer 2 broadcast domain. The source bundle does not specify affected firmware versions.

Exploitation context

The provided sources do not indicate known active exploitation, and the CVE is not listed as KEV in the bundle. Exploitation requires Layer 2 adjacency, which lowers broad internet risk but matters inside flat, shared, or poorly segmented networks.

Researcher notes

Key constraints are important: Cisco Discovery Protocol is Layer 2, so the attacker must be adjacent on the same broadcast domain. The bundle does not provide fixed version details, proof-of-concept status, or named mitigations beyond vendor guidance.

Mitigation direction

  • Check Cisco's advisory for affected releases and official fixed software guidance.
  • Inventory Cisco Video Surveillance 8000 Series IP Cameras in all sites.
  • Isolate camera networks from user, guest, and unmanaged device segments.
  • Restrict Layer 2 access to camera VLANs to trusted infrastructure only.
  • Prioritize remediation where cameras support physical security or compliance monitoring.

Validation and detection

  • Confirm whether Cisco Video Surveillance 8000 Series IP Cameras are deployed.
  • Map each affected camera to its Layer 2 broadcast domain.
  • Review whether untrusted devices share those camera VLANs or switches.
  • Check vendor guidance for the installed camera software release.
  • Review monitoring for unexpected camera reloads or availability gaps.
Prepared
Confidence
medium
Sources
3

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

Potential ATT&CK relevance

Conservative CVE-to-ATT&CK context

These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.

ATT&CK lookup starting points

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cwe · low confidence lookup

CWE-20: Exact CWE lookup

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description · low confidence lookup

Execution behavior lookup

The CVE wording references code or command execution, so execution technique review may help defensive triage. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.

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cve · low confidence lookup

CVE-2020-3507 mapping review

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Vulnerability profileCVE Program record
Severity
High
CVSS
8.8 (3.1)
Known Exploited
No
Published

Vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Official CVE source material

CNA and ADP enrichment extracted from CVE v5

These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.

1CVSS vectors
0Timeline events
0ADP providers
2Source links

CVSS vector scores

1 official score

We collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.

ScoreVersionSeverityVectorExploitImpactSource
8.8CVSS 3.1HighCVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H2.85.9Primary CVE score

Vulnerability scoring details

Base CVSS 3.1 score

8.8High
CVSS 3.1 vector shape for CVE-2020-3507Attack VectorAttack ComplexityPrivileges RequiredUser InteractionScopeConfidentiality ImpactIntegrity ImpactAvailability Impact

Vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack Vector
NetworkAdjacentLocalPhysical
Attack Complexity
LowHigh
Privileges Required
NoneLowHigh
User Interaction
NoneRequired
Scope
ChangedUnchanged
Confidentiality Impact
HighLowNone
Integrity Impact
HighLowNone
Availability Impact
HighLowNone
Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
CiscoCisco Video Surveillance 8000 Series IP Camerasn/aListed
Weakness

CWE details

CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.

CWE-20 · source CWE mapping

Improper Input Validation

Improper Input Validation represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.