Security readout for executives and security teams
CVE-2015-4203 is a Cisco IOS denial-of-service issue affecting a narrow uBR10000 configuration. If exploited, malformed MPLS IPv6 VPN traffic can crash the PXF process on the PRE module, disrupting service. The sources do not show code execution, data theft, or confirmed active exploitation. Exposure appears limited to Cisco uBR10000 devices using IOS 12.2SCH with PRE modules, NetFlow, and MPLS IPv6 VPN enabled. Organizations without this platform and configuration are not indicated as affected by the provided sources. Prioritize review if the organization operates Cisco uBR10000 infrastructure in service-provider or cable environments. Business impact is service disruption, not confirmed compromise. If no affected platform or configuration exists, urgency is low. Mitigation focus: Identify any Cisco uBR10000 devices running IOS 12.2SCH with PRE modules.; Review Cisco advisory 39439 for fixed software or vendor-supported workarounds.; Reduce exposure of affected MPLS 6VPE paths to untrusted traffic where feasible..
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
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.
CVE-2015-4203 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- Unknown
- CVSS
- Not scored
- Known Exploited
- No
- Published
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 and timeline data
No CVSS vectors or timeline events were available in the normalized CVE source material.
Source materials
- CVE List V5 sourceCVE List V5
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.