CVE-2019-1630: Cisco Integrated Management Controller Denial of Service Vulnerability

Security readout for executives and security teams

CVE-2019-1630 is a Cisco IMC availability issue. A locally authenticated user could provide a crafted file that triggers a buffer overflow in firmware signature checking, potentially blocking administrators from accessing the system. The known impact is denial of service, not data theft or code execution. Exposure appears limited to Cisco Unified Computing System Management Software 4.0 using Cisco IMC. The attacker must already have local authenticated access, so internet-facing exposure is not implied by the source bundle. Treat this as a moderate infrastructure availability risk. It is most urgent for environments where IMC access is critical for server recovery or operations, but the local authenticated requirement reduces broad external attack urgency. Mitigation focus: Identify Cisco UCS Management Software 4.0 systems using IMC.; Review Cisco's advisory for affected builds and fixed firmware guidance.; Restrict local authenticated access to IMC firmware maintenance functions..

Prepared

May 25, 2026, 13:34 UTC (UTC+00:00)

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.