Cisco ACI Multi-Site Orchestrator Privilege Escalation Vulnerability

published 2022-08-25 4 y ago modified 2026-06-17 4 mo ago also EUVD-2022-26171

cvss: 8.8; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 1.2%; EPSS 1.2% chance of exploitation in 30 days, percentile 68%
public exploits: 0; none known

A vulnerability in the API implementation of Cisco ACI Multi-Site Orchestrator (MSO) could allow an authenticated, remote attacker to elevate privileges on an affected device. This vulnerability is due to improper authorization on specific APIs. An attacker could exploit this vulnerability by sending crafted HTTP requests. A successful exploit could allow an attacker who is authenticated with non-Administrator privileges to elevate to Administrator privileges on an affected device.

Patch / fix

fixed in 1

cisco aci_multi-site_orchestrator 3.1\(1n\)

CISA SSVC

Exploitation: none
Automatable: no
Technical impact: total
Assessed: 2 y ago (2024-11-01)

Exploit prediction

1.21% chance of exploitation in the next 30 days, higher than 68% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by	version	score	vector
CNA	3.1	8.8	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
NVD	3.1	8.8	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Affected products

Cisco Cisco ACI Multi-Site Orchestrator Software

Classification

Weakness

CWE-285 Improper Authorization

References

tools.cisco.com /security/center/content/CiscoSecurityAdvisory/cisco-sa-mso-prvesc-BPFp9cZs
vendor-advisory

Sources

CVE List CVE-2022-20921
NVD CVE-2022-20921

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Summary