CVE-2021-40126
mediumPriorität · verfolgen · 17EPSS 0.009 · 59. PerzentilEURUUSEPSS · bewertet 2026-10-27
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.
Behebungen
Hersteller-Fix, Mitigation oder Workaround, wie von den Quellen veröffentlicht.
Ein Hersteller-Fix ist verfügbar.
- BehobenCisco Umbrella Insights Virtual Appliancecisco_csaf
Cisco has released software updates that address this vulnerability.
https://software.cisco.com
cvss
Technischer Schweregrad, 0–10. Eine Zeile je Quelle.
Basiswert 0–10 · höher = schwerwiegender · Vektor überfahren zum Auflösen
SSVC
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schwächen
Die CWE-Schwächeklassen, zu denen dies gehört.
betroffene Produkte (4)
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Advisories (1)
Hersteller- und Ökosystem-Meldungen dazu.
- cisco-sa-umbrella-user-enum-S7XfJwDECisco Umbrella Email Enumeration Vulnerability2021-11-03csaf · cisco_csafUS
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. Cisco has released software updates that address this vulnerability. There are no workarounds that address this vulnerability.
auch bekannt als (4)
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quellen
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Referenzen (5)
Externe Belege — Patches, Meldungen, Analysen.
- https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-umbrella-user-enum-S7XfJwDEcnnvd
- https://www.auscert.org.au/bulletins/ESB-2021.3675cnnvd
- https://www.cybersecurity-help.cz/vdb/SB2021110404cnnvd
- https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-umbrella-user-enum-S7XfJwDEenisa_euvd
- https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-umbrella-user-enum-S7XfJwDEVendor Advisorynvd
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