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CVE Record

CVE-2020-3506: 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 vulnerability affects Cisco Video Surveillance 8000 Series IP Cameras. Someone on the same local network segment could crash a camera or potentially run code on it without logging in. Internet-wide exposure is not indicated, but poorly segmented camera networks increase business risk.

Executive priority

Prioritize remediation where these cameras support physical security operations or share networks with untrusted devices. The issue can affect camera availability and potentially device control, but the attack requires local network adjacency.

Technical view

CVE-2020-3506 is a Cisco Discovery Protocol processing flaw caused by missing checks in affected IP cameras. The CVSS 3.1 score is 8.8 with adjacent-network attack scope, no privileges, no user interaction, and high confidentiality, integrity, and availability impact.

Likely exposure

Exposure is limited to Cisco Video Surveillance 8000 Series IP Cameras reachable by an attacker in the same Layer 2 broadcast domain. Shared switch segments, unmanaged camera networks, or mixed user-device VLANs increase likelihood.

Exploitation context

The source bundle does not show CISA KEV listing or active exploitation evidence. Exploitation requires Layer 2 adjacency and a crafted Cisco Discovery Protocol packet; no internet-routable attack path is supported by the sources.

Researcher notes

Key details are Cisco-specific: CWE-20, Cisco Discovery Protocol parsing, adjacent attack vector, and high CIA impact. The bundle does not provide exact affected versions or fixed release details, so validation depends on Cisco’s advisory.

Mitigation direction

  • Identify Cisco Video Surveillance 8000 Series IP Cameras in the environment.
  • Review Cisco’s advisory for affected releases, fixed software, and supported mitigations.
  • Segment camera networks from user and guest device broadcast domains.
  • Restrict physical and switch-port access to camera VLANs.
  • Disable Cisco Discovery Protocol only if Cisco guidance supports it.

Validation and detection

  • Confirm whether any deployed cameras match the affected Cisco 8000 Series product line.
  • Map each camera’s VLAN and Layer 2 broadcast domain exposure.
  • Compare installed software versions with Cisco’s advisory guidance.
  • Review monitoring for unexpected camera reloads or availability drops.
  • Document compensating controls where upgrades are not yet confirmed.
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-2020-3506 mapping review

Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.

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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-2020-3506Attack 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.