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CVE Record

CVE-2019-1830: Cisco Wireless LAN Controller Locally Significant Certificate Denial of Service Vulnerability

A vulnerability in Locally Significant Certificate (LSC) management for the Cisco Wireless LAN Controller (WLC) could allow an authenticated, remote attacker to cause the device to unexpectedly restart, which causes a denial of service (DoS) condition. The attacker would need to have valid administrator credentials. The vulnerability is due to incorrect input validation of the HTTP URL used to establish a connection to the LSC Certificate Authority (CA). An attacker could exploit this vulnerability by authenticating to the targeted device and configuring a LSC certificate. An exploit could allow the attacker to cause a DoS condition due to an unexpected restart of the device.

MediumCVSS 4.9Not KEV-listedUpdated
Glexia's TakeAutomated analysis

Security readout for executives and security teams

An authenticated administrator can trigger an unexpected restart of Cisco Wireless LAN Controller 8.3 through LSC certificate configuration. The business impact is wireless service disruption, not data theft. Risk is mainly from compromised or misused administrator access. Exposure is likely limited to Cisco WLC version 8.3 systems where attackers can authenticate with administrator credentials and reach the management interface. Environments with broad admin access or weak management-plane segmentation face higher practical risk. Treat as a moderate availability risk. Prioritize remediation where wireless availability is business-critical or WLC administrator access is broadly distributed. This is lower urgency than unauthenticated remote code execution but still important for operational resilience. Mitigation focus: Review Cisco's advisory for fixed software and upgrade guidance.; Restrict WLC management access to trusted administrative networks.; Limit administrator privileges to users who require certificate management..

Prepared

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

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ATT&CK lookup starting points

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cve · low confidence lookup

CVE-2019-1830 mapping review

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Vulnerability profileCVE Program record
Severity
Medium
CVSS
4.9 (3.0)
Known Exploited
No
Published

Vector: CVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/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
4.9CVSS 3.0MediumCVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H1.23.6Primary CVE score

Vulnerability scoring details

Base CVSS 3.0 score

4.9Medium
CVSS 3.0 vector shape for CVE-2019-1830Attack VectorAttack ComplexityPrivileges RequiredUser InteractionScopeConfidentiality ImpactIntegrity ImpactAvailability Impact

Vector: CVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/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 Wireless LAN Controller (WLC)8.3Listed
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.