Cisco disclosed a critical authentication bypass vulnerability in the Integrated Management Controller (IMC), the out-of-band management interface used across multiple Cisco server platforms. An unauthenticated remote attacker can bypass login controls and gain full administrative access to the IMC interface, enabling firmware modification, hardware reconfiguration, and data exfiltration from the management plane. Organizations running affected Cisco server hardware should treat this as an emergency patching event; exploitation requires no credentials and no user interaction.