CVE-2021-1577
9.1 · CRITICALOverview
CVE-2021-1577 is a critical-severity vulnerability affecting cisco application_policy_infrastructure_controller. It was published on August 25, 2021 and has a CVSS 3.1 base score of 9.1 (CRITICAL).
This vulnerability has a CVSS 3.1 base score of 9.1, rated CRITICAL. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.
Technical 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 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.
Remediation
Check the references section for vendor advisories and patches from cisco. Update application_policy_infrastructure_controller to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
Affected Products
| Vendor | Product | Versions | Status |
|---|---|---|---|
| cisco | application_policy_infrastructure_controller | >= 0, < 3.2\(10e\) | Affected |
| cisco | cloud_application_policy_infrastructure_controller | >= 0, < 3.2\(10e\) | Affected |
Frequently Asked Questions
What is CVE-2021-1577?
CVE-2021-1577 is a critical-severity vulnerability affecting cisco application_policy_infrastructure_controller. It was published on August 25, 2021 and has a CVSS 3.1 base score of 9.1 (CRITICAL).
How severe is CVE-2021-1577?
This vulnerability has a CVSS 3.1 base score of 9.1, rated CRITICAL. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.
How do I fix or remediate CVE-2021-1577?
Check the references section for vendor advisories and patches from cisco. Update application_policy_infrastructure_controller to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
How can CyberStrike help with CVE-2021-1577?
CyberStrike's AI-powered security agents can automatically detect CVE-2021-1577 across your infrastructure using autonomous pentesting, DAST scanning, and HackBrowser. The platform continuously monitors for known vulnerabilities and provides actionable remediation guidance prioritized by real-world exploitability.
How CyberStrike Helps
AI agents map your attack surface to find vulnerabilities like this one.
Automated penetration testing that runs continuously, not just quarterly.
AI-driven PR review catches vulnerable dependencies before they ship.
Browser-based exploitation validates findings with real proof-of-concept.
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