CVE-2022-20798Network attack vector

Unauthenticated management access via LDAP login checks

Published Jun 15, 2022 · Updated Nov 1, 2024

Authentication bypass in Cisco Secure Email Gateway allows remote attackers to access the web management interface without credentials. The external-authentication login path performs improper authentication checks on specific input when LDAP authentication is enabled. Exposure requires nondefault LDAP-based external authentication; successful exploitation grants web-management access and its administrative capabilities.

CVSS severity9.8
Critical
EPSS probability1.50%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Authentication bypass in Cisco Secure Email Gateway allows remote attackers to access the web management interface without credentials. The external-authentication login path performs improper authentication checks on specific input when LDAP authentication is enabled. Exposure requires nondefault LDAP-based external authentication; successful exploitation grants web-management access and its administrative capabilities.

The record

CVE
CVE-2022-20798
Published
Jun 15, 2022
Updated
Nov 1, 2024
Vendor
ClamAV
Product
Cisco Secure Email Gateway
Classifications
CWE-287, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jun 15, 2022CVE publishedPublication date reported by the CVE source.
  2. Nov 1, 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?

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  1. Affected versionversion=n/a

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

ClamAV · Cisco Secure Email Gatewayversion=n/a

Published CVSS scores

9.8CiscoCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:X/RL:X/RC:X

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.

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No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-287Improper Authentication
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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