THREATPORT/VULNERABILITY/CVE-2021-1388
CRITICAL SEVERITY

CVE-2021-1388

Aci Multi Site Orchestrator vulnerability

CVSS
10.0
EPSS
14.4%
EPSS pct
96th
Exploited
No known
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.
Affected vendor
Cisco
Affected product
Aci Multi Site Orchestrator
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
Weakness type (CWE)
  • CWE-269 — Improper Privilege Management
Published
2021-02-24

Risk analysis

Based on its CVSS vector, this vulnerability is exploitable over the network, low attack complexity, requiring no privileges, no user interaction. Successful exploitation leads to high impact to confidentiality, high impact to integrity, high impact to availability.

Its EPSS score of 14.4% reflects a moderate probability of exploitation activity in the wild over the next 30 days, placing it above 96% of all scored CVEs.

Check your external exposure to CVE-2021-1388

  • Confirm whether Cisco Aci Multi Site Orchestrator is running on any internet-facing host or subdomain.
  • Match discovered service fingerprints against the version affected by CVE-2021-1388.
  • Prioritise remediation if the asset is public, business-critical, or near authentication/payment flows.

How ThreatPort helps with CVE-2021-1388

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