Security readout for executives and security teams
This vulnerability can let a remote, unauthenticated attacker crash affected Cisco Small Business 300 Series switches by forcing memory exhaustion through crafted DHCP traffic. The business impact is network interruption, not data theft. Risk is highest where these switches are still deployed and reachable by untrusted network clients. Exposure is limited to Cisco Small Business 300 Series Managed Switches matching the affected firmware information in the sources, especially devices processing DHCP traffic from untrusted or broad user networks. Treat as a moderate operational resilience issue. Prioritize remediation where affected switches support critical office, branch, security, or production connectivity, because exploitation could cause outages without needing credentials. Mitigation focus: Inventory Cisco Small Business 300 Series switches and firmware versions.; Review Cisco’s advisory for fixed software or supported workaround guidance.; Apply vendor-supported firmware updates where Cisco identifies a fixed release..
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
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Open ATT&CK lookupCVE-2019-1814 mapping review
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Open ATT&CK lookup- Severity
- Medium
- CVSS
- 6.8 (3.0)
- Known Exploited
- No
- Published
Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:C/C:N/I:N/A:H
CNA and ADP enrichment extracted from CVE v5
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CVSS vector scores
1 official scoreWe 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.
CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:C/C:N/I:N/A:H2.24Primary CVE scoreVulnerability scoring details
Base CVSS 3.0 score
6.8MediumVector: CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:C/C:N/I:N/A:H
Source materials
- CVE List V5 sourceCVE List V5
- 20190515 Cisco Small Business 300 Series Managed Switches DHCP Denial of Service VulnerabilityCVE reference · vendor-advisory, x_refsource_CISCO
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.
Uncontrolled Resource Consumption
Uncontrolled Resource Consumption represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.