CVE-2022-20664: Cisco Email Security Appliance and Cisco Secure Email and Web Manager Information Disclosure Vulnerability

Severity: high (CVSS 7.7 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 1.0% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2022-06-15 · updated 2026-06-17
Weakness: CWE-497

Description

A vulnerability in the web management interface of Cisco Secure Email and Web Manager, formerly Cisco Security Management Appliance (SMA), and Cisco Email Security Appliance (ESA) could allow an authenticated, remote attacker to retrieve sensitive information from a Lightweight Directory Access Protocol (LDAP) external authentication server connected to an affected device. This vulnerability is due to a lack of proper input sanitization while querying the external authentication server. An attacker could exploit this vulnerability by sending a crafted query through an external authentication web page. A successful exploit could allow the attacker to gain access to sensitive information, including user credentials from the external authentication server. To exploit this vulnerability, an attacker would need valid operator-level (or higher) credentials.

Affected products

Cisco Email Security Appliance (ESA): before 14.0.2-020 — fixed in 14.0.2-020
Cisco Secure Email And Web Manager: before 13.6.2-090; from 14.1 before 14.1.0-227 — fixed in 13.6.2-090, 14.1.0-227

How to fix

Upgrade to a fixed version: Cisco Email Security Appliance (ESA) 14.0.2-020; Cisco Secure Email And Web Manager 13.6.2-090, 14.1.0-227. Check the vendor advisory for mitigations.

References

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