Is CVE-2021-1579 in the CISA KEV catalog?

No. CVE-2021-1579 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2021-1579?

CVE-2021-1579 has a CVSS v3 base score of 8.1 (HIGH).

What is the EPSS score for CVE-2021-1579?

CVE-2021-1579 has an EPSS score of 2.13% (80th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2021-1579?

Upgrade application policy infrastructure controller to 5.2(2f) or later. Fixes are available for 2 affected products.

CVE & CISA-KEV Catalog

CVE-2021-1579

HIGHEPSS 80th pctl

8.1

CVSS v3

NVD

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.

CWE-250 CWE-269Improper Privilege Management

How to fix

Remediation Available

application policy infrastructure controllerNVD

Affected:>= 5.0, < 5.2(2f)Fixed in:5.2(2f)CVE-2021-1579derived from NVD

cloud application policy infrastructure controllerNVD

Affected:>= 5.0, < 5.2(2f)Fixed in:5.2(2f)CVE-2021-1579derived from NVD

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredLow

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityNone

IntegrityHigh

AvailabilityHigh

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H

Exploit Intelligence

2.13%probability of exploitation in 30 days

80thpercentile

Elevated risk: more likely to be exploited than 80% of all known CVEs.

References

Patch1

tools.cisco.com

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2024-11-21.