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TI-2021-01115 Aliases CVE-2021-1388GHSA-m8g7-f94v-5fp8

Cisco ACI Multi-Site Orchestrator Application Services Engine Deployment Authentication Bypass Vulnerability

Priority MEDIUM 64CWE-269Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
Privilege escalation
Confidentiality · integrity · availability
High · High · High
Fix status
No fix listed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-269.

Summary

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.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.14847 96th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
Yes
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
CiscoCisco ACI Multi-Site Orchestrator Softwareall versions—No fix listedCNA
  • Cisco ACI Multi-Site Orchestrator Software VendorCisco Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 2

CPEVersionsRoleVendor
cpe:2.3:a:cisco:aci_multi-site_orchestrator:*:*:*:*:*:*:*:*3.0 to before 3.0\(3m\)VulnerableCisco
cpe:2.3:a:cisco:application_policy_infrastructure_controller:3.0\(3i\):*:*:*:*:*:*:*3.0(3i)VulnerableCisco
  • cpe:2.3:a:cisco:aci_multi-site_orchestrator:*:*:*:*:*:*:*:* Versions 3.0 to before 3.0\(3m\) Vulnerable ·Cisco
  • cpe:2.3:a:cisco:application_policy_infrastructure_controller:3.0\(3i\):*:*:*:*:*:*:* Versions 3.0(3i) Vulnerable ·Cisco

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2021-1388
  2. 2026-10-03 Alias added: GHSA-m8g7-f94v-5fp8

References

Advisory 1

  • TI-2022-05480 Cisco ACI Multi-Site Orchestrator Privilege Escalation Vulnerability CVSS 3.1HIGH 8.8

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences