CVE-2022-20664Network attack vector

Authenticated credential disclosure via unsanitized LDAP query

Published Jun 15, 2022 · Updated Nov 6, 2024

Information disclosure in the web interface of Cisco Secure Email Gateway allows remote authenticated users to retrieve LDAP credentials. The external-authentication page passes a crafted query to the connected LDAP server without properly sanitizing its input, exposing sensitive directory information. Exploitation requires operator-level or higher credentials, external authentication enabled despite its default-off state, and LDAP selected as the authentication protocol.

CVSS severity7.7
High
EPSS probability1.01%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Information disclosure in the web interface of Cisco Secure Email Gateway allows remote authenticated users to retrieve LDAP credentials. The external-authentication page passes a crafted query to the connected LDAP server without properly sanitizing its input, exposing sensitive directory information. Exploitation requires operator-level or higher credentials, external authentication enabled despite its default-off state, and LDAP selected as the authentication protocol.

The record

CVE
CVE-2022-20664
Published
Jun 15, 2022
Updated
Nov 6, 2024
Vendor
ClamAV
Product
Cisco Secure Email Gateway
Classifications
CWE-497, CWE-200, T1190
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Jun 15, 2022CVE publishedPublication date reported by the CVE source.
  2. Nov 6, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=n/a

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

ClamAV · Cisco Secure Email Gatewayversion=n/a

Published CVSS scores

3.5NIST National Vulnerability DatabaseAV:N/AC:M/Au:S/C:P/I:N/A:N
7.7Cisco Systems, Inc.CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-497Exposure of Sensitive System Information to an Unauthorized Control Sphere
CWE-200Exposure of Sensitive Information to an Unauthorized Actor
T1190Exploit Public-Facing Application

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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