Auth bypass in Cisco iOS Xe Software 16.3.1
CVE-2020-3227
A vulnerability in the authorization controls for the Cisco IOx application hosting infrastructure in Cisco IOS XE Software could allow an unauthenticated, remote attacker to execute Cisco IOx API commands without proper authorization. The vulnerability is due to incorrect handling of requests for authorization tokens. An attacker could exploit this vulnerability by using a crafted API call to request such a token. An exploit could allow the attacker to obtain an authorization token and execute any of the IOx API commands on an affected device.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.034 (88.5th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 88th percentile — 88.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.034 · newest: 0.034 · change: 0.000
Affected products
- Cisco iOS Xe Software 16.3.1
- Cisco iOS Xe — versions 3.11.6e, 16.3.1, 16.3.1a
Weakness classification (CWE)
Public proof-of-concept exploits
References
- tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ioxPE-Kg… (vendor-advisory, Vendor Advisory)
Frequently asked questions
- What is CVE-2020-3227?
- CVE-2020-3227 is a critical-severity vulnerability in Cisco iOS Xe Software 16.3.1, classified under CWE-264. CVSS score: 9.8/10. Published 2020-06-03.
- How severe is CVE-2020-3227?
- Critical severity. CVSS v3 base score is 9.8 out of 10.
- Is CVE-2020-3227 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.