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CVE Record

CVE-2020-3544: Cisco Video Surveillance 8000 Series IP Cameras Cisco Discovery Protocol Remote Code Execution and Denial of Service Vulnerability

A vulnerability in the Cisco Discovery Protocol implementation for Cisco Video Surveillance 8000 Series IP Cameras could allow an unauthenticated, adjacent attacker to execute arbitrary code on an affected device or cause the device to reload. This vulnerability is due to missing checks when an IP camera processes a Cisco Discovery Protocol packet. An attacker could exploit this vulnerability by sending a malicious Cisco Discovery Protocol packet to an affected device. 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 this vulnerability, 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. Someone already on the same local network segment could crash a camera or potentially run code on it, threatening surveillance availability and device trust.

Executive priority

Prioritize remediation where these cameras protect physical security or share networks with untrusted endpoints. Business urgency is high because compromise could blind surveillance or undermine device integrity, but attack reach is local-network limited.

Technical view

CVE-2020-3544 is a Cisco Discovery Protocol processing flaw caused by missing checks in affected IP cameras. It is unauthenticated, low-complexity, Layer 2 adjacent, and rated CVSS 8.8 with high confidentiality, integrity, and availability impact.

Likely exposure

Exposure is limited to Cisco Video Surveillance 8000 Series IP Cameras reachable by an untrusted or compromised host in the same broadcast domain. The source bundle does not identify affected software versions.

Exploitation context

The CVE is not listed as KEV in the provided bundle, and no cited source states active exploitation. Exploitation requires Layer 2 adjacency, so remote Internet exposure is not supported by the evidence.

Researcher notes

Key evidence: CVSS 3.1 AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H, CWE-119, Cisco Discovery Protocol parsing issue, and affected product family. Version and fix details are incomplete in the provided source bundle.

Mitigation direction

  • Check the Cisco advisory for affected releases and vendor-recommended fixes.
  • Apply Cisco-provided updates or workarounds where available.
  • Limit camera VLAN access to trusted infrastructure and management hosts.
  • Remove or isolate obsolete affected cameras from sensitive networks.
  • Treat unexpected camera reloads as possible security events.

Validation and detection

  • Inventory Cisco Video Surveillance 8000 Series IP Cameras in use.
  • Compare device software against Cisco advisory guidance.
  • Confirm untrusted hosts cannot share the cameras' broadcast domain.
  • Review network design for unnecessary Layer 2 adjacency to cameras.
  • Check operational logs for unexpected reloads or availability interruptions.
Prepared
Confidence
high
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

Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.

cwe · low confidence lookup

CWE-119: Exact CWE lookup

Use the exact CWE identifier as the starting point before reviewing related ATT&CK behavior. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.

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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.

Open ATT&CK lookup
cve · low confidence lookup

CVE-2020-3544 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-2020-3544Attack 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-119 · source CWE mapping

Improper Restriction of Operations within the Bounds of a Memory Buffer

Improper Restriction of Operations within the Bounds of a Memory Buffer represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.