CVE-2021-1266: Cisco Managed Services Accelerator

Medium severity, CVSS 6.5. EPSS: 1.1% chance of exploitation in the next 30 days.

A vulnerability in the REST API of Cisco Managed Services Accelerator (MSX) could allow an authenticated, remote attacker to cause a denial of service (DoS) condition on an affected device. The vulnerability is due to the way that the affected software logs certain API requests. An attacker could exploit this vulnerability by sending a flood of crafted API requests to an affected device. A successful exploit could allow the attacker to cause a DoS condition on the affected device.

Affected products

• Cisco Managed Services Accelerator: before 3.10.0 (fixed in 3.10.0)

Published 2021-02-04. Last modified 2026-06-17.