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Case File

CVE-2021-1388

CRITICAL · CVSS 10 EPSS 14.36% Public Exploit

Source: NVD + CISA KEV + EPSS (historical backfill) · Published 2021-02-24 · Last synced 2026-08-04

CyberRota Analysis

This is a critical severity vulnerability with a CVSS score of 10.0. It affects Cisco. Public exploit code or proof-of-concept references have been detected in its references. Its EPSS score suggests a 14.4% probability of exploitation in the next 30 days. It may be remotely exploitable.

Public Exploit Signal

A public exploit, PoC, GitHub repository or Metasploit reference was detected for this CVE.

Detected Signals
exploit

Note: these links are listed for security research and verification purposes only.

CVE
CVE-2021-1388
Severity
CRITICAL
CVSS
10
EPSS
14.36%
Cisco

Original NVD Description

A vulnerability in an API endpoint of Cisco ACI Multi-Site Orchestrator (MSO) installed on the Application Services Engine could allow an unauthenticated, remote attacker to bypass authentication on an affected device. The vulnerability is due to improper token validation on a specific API endpoint. An attacker could exploit this vulnerability by sending a crafted request to the affected API. A successful exploit could allow the attacker to receive a token with administrator-level privileges that could be used to authenticate to the API on affected MSO and managed Cisco Application Policy Infrastructure Controller (APIC) devices.

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