Skip to main content

Application Policy Infrastructure Controller CVE-2021-1578

HIGH
Not Failing Securely ('Failing Open') (CWE-636)
2021-08-25 psirt@cisco.com
Cisco Information Disclosure Application Policy Infrastructure Controller Cloud Application Policy Infrastructure Controller
8.8
CVSS 3.1 · NVD
Share

Severity by source

NVD PRIMARY
8.8 HIGH
AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

Lifecycle Timeline

1
CVE Published
Aug 25, 2021 - 20:15 nvd
HIGH 8.8

DescriptionNVD

A vulnerability in an API endpoint of Cisco Application Policy Infrastructure Controller (APIC) and Cisco Cloud Application Policy Infrastructure Controller (Cloud APIC) could allow an authenticated, remote attacker to elevate privileges to Administrator on an affected device. This vulnerability is due to an improper policy default setting. An attacker could exploit this vulnerability by using a non-privileged credential for Cisco ACI Multi-Site Orchestrator (MSO) to send a specific API request to a managed Cisco APIC or Cloud APIC device. A successful exploit could allow the attacker to obtain Administrator credentials on the affected device.

AnalysisAI

A vulnerability in an API endpoint of Cisco Application Policy Infrastructure Controller (APIC) and Cisco Cloud Application Policy Infrastructure Controller (Cloud APIC) could allow an authenticated,. Rated high severity (CVSS 8.8), this vulnerability is remotely exploitable, low attack complexity. No vendor patch available.

Technical ContextAI

This vulnerability is classified under CWE-636. A vulnerability in an API endpoint of Cisco Application Policy Infrastructure Controller (APIC) and Cisco Cloud Application Policy Infrastructure Controller (Cloud APIC) could allow an authenticated, remote attacker to elevate privileges to Administrator on an affected device. This vulnerability is due to an improper policy default setting. An attacker could exploit this vulnerability by using a non-privileged credential for Cisco ACI Multi-Site Orchestrator (MSO) to send a specific API request to a managed Cisco APIC or Cloud APIC device. A successful exploit could allow the attacker to obtain Administrator credentials on the affected device. Affected products include: Cisco Application Policy Infrastructure Controller, Cisco Cloud Application Policy Infrastructure Controller.

RemediationAI

No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Apply vendor patches when available. Implement network segmentation and monitoring as interim mitigations.

More in Application Policy Infrastructure Controller

View all
CVE-2021-1388 CRITICAL
10.0 Feb 24

A vulnerability in an API endpoint of Cisco ACI Multi-Site Orchestrator (MSO) installed on the Application Services Engi
CVE-2021-1393 CRITICAL
9.8 Feb 24

Multiple vulnerabilities in Cisco Application Services Engine could allow an unauthenticated, remote attacker to gain pr
CVE-2021-1581 CRITICAL
9.1 Aug 25

Multiple vulnerabilities in the web UI and API endpoints of Cisco Application Policy Infrastructure Controller (APIC) or
CVE-2021-1577 CRITICAL
9.1 Aug 25

A vulnerability in an API endpoint of Cisco Application Policy Infrastructure Controller (APIC) and Cisco Cloud Applicat
CVE-2023-20011 HIGH
8.8 Feb 23

A vulnerability in the web-based management interface of Cisco Application Policy Infrastructure Controller (APIC) and C
CVE-2021-1579 HIGH
8.8 Aug 25

A vulnerability in an API endpoint of Cisco Application Policy Infrastructure Controller (APIC) and Cisco Cloud Applicat
CVE-2017-6768 HIGH
7.8 Aug 17

A vulnerability in the build procedure for certain executable system files installed at boot time on Cisco Application P
CVE-2016-6413 HIGH
7.8 Sep 24

The installation procedure on Cisco Application Policy Infrastructure Controller (APIC) devices 1.3(2f) mishandles binar
CVE-2019-1682 HIGH
7.8 May 03

A vulnerability in the FUSE filesystem functionality for Cisco Application Policy Infrastructure Controller (APIC) softw
CVE-2017-6767 HIGH
7.1 Aug 17

A vulnerability in Cisco Application Policy Infrastructure Controller (APIC) could allow an authenticated, remote attack
CVE-2015-6424 HIGH
7.2 Dec 18

The boot manager in Cisco Application Policy Infrastructure Controller (APIC) 1.1(0.920a) allows local users to bypass i
CVE-2024-20478 HIGH
7.2 Aug 28

A vulnerability in the software upgrade component of Cisco Application Policy Infrastructure Controller (APIC) and Cisco

Same weakness CWE-636 – Not Failing Securely ('Failing Open')

View all
CVE-2026-22034 CRITICAL POC
9.8
CVE-2024-3729 CRITICAL
9.8
CVE-2026-40525 CRITICAL
9.1
CVE-2024-43532 HIGH
8.8
CVE-2026-35205 HIGH
8.4
CVE-2026-54291 HIGH
8.2
CVE-2023-4030 HIGH
7.8
CVE-2026-42423 HIGH
7.7

Same technique Information Disclosure

View all
CVE-2013-2251 CRITICAL POC
9.8
CVE-2017-5638 CRITICAL POC
9.8
CVE-2025-24813 CRITICAL POC
9.8
CVE-2015-1701 HIGH POC
7.8
CVE-2017-0147 HIGH POC
7.5
CVE-2014-6324 HIGH POC
8.8
CVE-2023-7028 CRITICAL POC
10.0
CVE-2017-0213 HIGH POC
7.3

Share

CVE-2021-1578 vulnerability details – vuln.today
Back

This site uses cookies essential for authentication and security. No tracking or analytics cookies are used. Privacy Policy