CVE-2021-1577: cisco application_policy_infrastructure_controller Improper Access Control
Vulnerability summary
CVE-2021-1577 is a critical (CVSS 9.1) Improper Access Control vulnerability in cisco application_policy_infrastructure_controller. EPSS estimates a 1.30% chance of exploitation in the next 30 days, higher than 70.1% of scored vulnerabilities.
Timeline
- 25-08-2021PublishedVulnerability first disclosed.
- 07-11-2024Last modifiedVulnerability information updated.
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.
CVSS metrics
3 scores · 2 sources · 2 versions- NVDNIST9.1CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
EPSS trend
Probability
1.30%
Chance of exploitation in the next 30 days
Percentile
70%
Versus all other CVEs
30-day change
0.00 pp
From 1.30% on 20-09-2026
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Cisco3 products
- application_policy_infrastructure_controller< 3.2\(10e\) | ≥ 4.0, < 4.2\(6h\) | ≥ 5.0, < 5.1\(3e\)
- cisco application policy infrastructure controller (apic)n/a
- cloud_application_policy_infrastructure_controller< 3.2\(10e\) | ≥ 4.0, < 4.2\(6h\) | ≥ 5.0, < 5.1\(3e\)
1 vendor · 3 products
References
1 links- tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-capic-frw-Nt3RYxR2Vendor AdvisoryX Refsource CISCO