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CVE-2021-1579

Cisco Application Policy Infrastructure Controller App Privilege Escalation Vulnerability

HIGH
8.8
CVSS Score
Published: August 25, 2021 at 07:10 PM UTC
Updated: June 17, 2026 at 03:32 AM UTC
2 products affected across 1 vendorApplication Policy Infrastructure ControllerCloud Application Policy Infrastructure Controller

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Severity
HIGH8.8
Exploit prediction
EPSS 2%
SSVC
No known exploit

Description

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 with Administrator read-only credentials to elevate privileges on an affected system. This vulnerability is due to an insufficient role-based access control (RBAC). An attacker with Administrator read-only credentials could exploit this vulnerability by sending a specific API request using an app with admin write credentials. A successful exploit could allow the attacker to elevate privileges to Administrator with write privileges on the affected device.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Application Policy Infrastructure Controller· Cisco
95%
v < 3.2(10f)4.0 ≤ v < 4.2(7l)5.0 ≤ v < 5.2(2f)
Affected range stops below 3.2(10f), so it looks safe — our inference, not a vendor statement
Affected range stops below 4.2(7l), so it looks safe — our inference, not a vendor statement
Affected range stops below 5.2(2f), so it looks safe — our inference, not a vendor statement
Cloud Application Policy Infrastructure Controller· Cisco
95%
v < 3.2(10f)4.0 ≤ v < 4.2(7l)5.0 ≤ v < 5.2(2f)
Affected range stops below 3.2(10f), so it looks safe — our inference, not a vendor statement
Affected range stops below 4.2(7l), so it looks safe — our inference, not a vendor statement
Affected range stops below 5.2(2f), so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

References (1)

Vendor Advisoryx_refsource_CISCOPatch
Source: [email protected]
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-capic-chvul-CKfGYBh8

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

8.8HIGH[email protected]
Attack Vector
NETWORK
Complexity
LOW
Privileges
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-250CWE-269

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