Security readout for executives and security teams
CVE-2019-1849 is a Cisco IOS XR EVPN denial-of-service flaw. A network-adjacent attacker could cause crashes on Provider Edge devices in the same EVPN instance, disrupting traffic forwarding and requiring manual recovery. The risk is operational availability, not data theft. Exposure is most likely in service provider, carrier, or enterprise networks running Cisco IOS XR with BGP MPLS-based EVPN on Provider Edge devices. Exact affected releases are not provided in the source bundle. Treat as high priority where IOS XR EVPN supports production traffic. The business impact is network outage or degraded forwarding on PE devices. Prioritize exposed service-provider or backbone environments first. Mitigation focus: Review Cisco's advisory for affected and fixed IOS XR releases.; Apply vendor-supported IOS XR updates where Cisco identifies exposure.; Restrict EVPN adjacency and route exchange to trusted peers..
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
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Open ATT&CK lookupCVE-2019-1849 mapping review
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Open ATT&CK lookup- Severity
- High
- CVSS
- 7.4 (3.0)
- Known Exploited
- No
- Published
Vector: CVSS:3.0/AV:A/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
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.
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:A/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H2.84Primary CVE scoreVulnerability scoring details
Base CVSS 3.0 score
7.4HighVector: CVSS:3.0/AV:A/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
Source materials
- CVE List V5 sourceCVE List V5
- 20190515 Cisco IOS XR Software BGP MPLS-Based EVPN 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.
Improper Check for Unusual or Exceptional Conditions
Improper Check for Unusual or Exceptional Conditions represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.