Information disclosure in Cisco Umbrella Insights Virtual Appliance
CVE-2021-40126
A vulnerability in the web-based dashboard of Cisco Umbrella could allow an authenticated, remote attacker to perform an email enumeration attack against the Umbrella infrastructure. This vulnerability is due to an overly descriptive error message on the dashboard that appears when a user attempts to modify their email address when the new address already exists in the system. An attacker could exploit this vulnerability by attempting to modify the user's email address. A successful exploit could allow the attacker to enumerate email addresses of users in the system.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 4.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N.
EPSS exploit prediction
EPSS: 0.009 (58.2th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 58th percentile — 58.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.009 · newest: 0.009 · change: 0.000
Affected products
Weakness classification (CWE)
References
- tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-umbrella… (vendor-advisory, Vendor Advisory)
Frequently asked questions
- What is CVE-2021-40126?
- CVE-2021-40126 is a medium-severity vulnerability in Cisco Umbrella Insights Virtual Appliance, classified under CWE-210. CVSS score: 4.3/10. Published 2021-11-04.
- How severe is CVE-2021-40126?
- Medium severity. CVSS v3 base score is 4.3 out of 10.