What’s Vulnerable › Vulnerabilities

CVE-2020-3137: Cisco Email Security Appliance Cross-Site Scripting Vulnerability

• Severity: medium (CVSS 6.1 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.8% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2020-09-23 · updated 2026-06-17
• Weakness: CWE-79

Description

A vulnerability in the web-based management interface of Cisco Email Security Appliance (ESA) could allow an unauthenticated, remote attacker to conduct a cross-site scripting (XSS) attack against a user of the web-based management interface of an affected device. The vulnerability exists because the web-based management interface of the affected device does not properly validate user-supplied input. An attacker could exploit this vulnerability by persuading a user to click a malicious link. A successful exploit could allow the attacker to execute arbitrary script code in the context of the affected interface or to access sensitive, browser-based information.

Affected products

• Cisco Email Security Appliance (ESA): through 13.0.0

References

• https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-email-sec-xss-EbjXuXwP
• https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-email-sec-xss-EbjXuXwP

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