What is CVE-2021-1577?

CVE-2021-1577 is a critical-severity vulnerability in Cisco Application Policy Infrastructure Controller, classified under Improper Access Control. CVSS score: 9.1/10. Published 2021-08-25.

How severe is CVE-2021-1577?

Critical severity. CVSS v3 base score is 9.1 out of 10.

Vulnerability in Cisco Application Policy Infrastructure Controller

CVE-2021-1577

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 unauthenticated, remote attacker to read or write arbitrary files on an affected system. This vulnerability is due to improper access control. An attacker could exploit this vulnerability by using a specific API endpoint to upload a file to an affected device. A successful exploit could allow the attacker to read or write arbitrary files on an affected device.

EPSS: 0.013 (68.6th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 9.1 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N.

Affected products

Weakness classification (CWE)

CWE-284 — Improper Access Control

References

psirt@cisco.com (x_refsource_CISCO, vendor-advisory, Vendor Advisory)

Frequently asked questions

What is CVE-2021-1577?: CVE-2021-1577 is a critical-severity vulnerability in Cisco Application Policy Infrastructure Controller, classified under Improper Access Control. CVSS score: 9.1/10. Published 2021-08-25.
How severe is CVE-2021-1577?: Critical severity. CVSS v3 base score is 9.1 out of 10.