CVE-2022-20634Network attack vector

User redirection via unvalidated URL parameters

Published Nov 15, 2024 · Updated Nov 15, 2024

Open redirect in Cisco Enterprise Chat and Email before 12.6(1)_ES1 allows remote attackers to send users to malicious sites. The web interface accepts attacker-controlled URL parameters in an HTTP request without validating the redirect destination before returning it to the browser. Exploitation requires an interface user to click a crafted link, after which the redirect can support phishing by sending that user to an attacker-chosen site.

CVSS severity4.7
Medium
EPSS probability0.59%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

Open redirect in Cisco Enterprise Chat and Email before 12.6(1)_ES1 allows remote attackers to send users to malicious sites. The web interface accepts attacker-controlled URL parameters in an HTTP request without validating the redirect destination before returning it to the browser. Exploitation requires an interface user to click a crafted link, after which the redirect can support phishing by sending that user to an attacker-chosen site.

The record

CVE
CVE-2022-20634
Published
Nov 15, 2024
Updated
Nov 15, 2024
Vendor
ClamAV
Product
Cisco Enterprise Chat and Email
Classifications
CWE-601, T1566.002
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

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

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

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

  1. Affected versionversion=11.5(1)
  2. Affected versionversion=11.6(1)
  3. Affected versionversion=11.6(1)_ES10
  4. Affected versionversion=11.6(1)_ES11
  5. Affected versionversion=11.6(1)_ES2
  6. Affected versionversion=11.6(1)_ES3
  7. Affected versionversion=11.6(1)_ES4
  8. Affected versionversion=11.6(1)_ES5
  9. Affected versionversion=11.6(1)_ES6
  10. Affected versionversion=11.6(1)_ES7
  11. Affected versionversion=11.6(1)_ES8
  12. Affected versionversion=11.6(1)_ES9
  13. Affected versionversion=11.6(1)_ES9a
  14. Affected versionversion=12.0(1)
  15. Affected versionversion=12.0(1)_ES1
  16. Affected versionversion=12.0(1)_ES2
  17. Affected versionversion=12.0(1)_ES3
  18. Affected versionversion=12.0(1)_ES4
  19. Affected versionversion=12.0(1)_ES5
  20. Affected versionversion=12.0(1)_ES5a
  21. Affected versionversion=12.0(1)_ES6
  22. Affected versionversion=12.0(1)_ES6_ET1
  23. Affected versionversion=12.5(1)
  24. Affected versionversion=12.5(1)_ES1
  25. Affected versionversion=12.5(1)_ES2
  26. Affected versionversion=12.5(1)_ES3
  27. Affected versionversion=12.5(1)_ES3_ET1
  28. Affected versionversion=12.5(1)_ET1
  29. Affected versionversion=12.6(1)
  30. Affected versionversion=12.6(1)_ET1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

ClamAV · Cisco Enterprise Chat and Emailversion=11.5(1); version=11.6(1); version=11.6(1)_ES10; version=11.6(1)_ES11; version=11.6(1)_ES2; version=11.6(1)_ES3; version=11.6(1)_ES4; version=11.6(1)_ES5; version=11.6(1)_ES6; version=11.6(1)_ES7; version=11.6(1)_ES8; version=11.6(1)_ES9; version=11.6(1)_ES9a; version=12.0(1); version=12.0(1)_ES1; version=12.0(1)_ES2; version=12.0(1)_ES3; version=12.0(1)_ES4; version=12.0(1)_ES5; version=12.0(1)_ES5a; version=12.0(1)_ES6; version=12.0(1)_ES6_ET1; version=12.5(1); version=12.5(1)_ES1; version=12.5(1)_ES2; version=12.5(1)_ES3; version=12.5(1)_ES3_ET1; version=12.5(1)_ET1; version=12.6(1); version=12.6(1)_ET1

Published CVSS scores

6.1National Vulnerability DatabaseCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
4.7Cisco Systems, Inc.CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:N/I:L/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
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-601URL Redirection to Untrusted Site ('Open Redirect')
T1566.002Spearphishing Link

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

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo