HCL Sametime is vulnerable to an information disclosure
Priority LOW 32CWE-285Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Security bypass
- Confidentiality · integrity · availability
- High · None · Low
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-285.
Summary
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.
Why it matters now
EPSS 0.00675 52nd percentileScored 2026-11-08
Fix No fix listed No fixed version in the sources yet
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| HCL Software | Sametime | 11.6 | — | No fix listed | CNA |
- Sametime VendorHCL Software Affected 11.6 Fixed in — No fix listed CNA
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:hcltech:sametime:11.6:*:*:*:*:*:*:* | 11.6 | Vulnerable | HCL Software |
- cpe:2.3:a:hcltech:sametime:11.6:*:*:*:*:*:*:* Versions 11.6 Vulnerable ·HCL Software
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2021-27772
- 2026-10-03 Alias added: GHSA-67g3-hq78-3fjw
References
More HCL Software Sametime vulnerabilities
- TI-2021-09166 HCL Sametime is vulnerable to arbitrary HTTP requests CVSS 3.1HIGH 8.8
- TI-2023-27540 HCL Sametime is impacted by a Cross Site Request Forgery (CSRF) vulnerability CVSS 3.1HIGH 8.8
- TI-2021-09167 HCL Sametime is susceptible a file transfer service vulnerability CVSS 3.1HIGH 8.2
- TI-2022-20647 HCL Sametime 12.0 and 12.0FP1 anonymous users have directory lookup access CVSS 3.1MEDIUM 6.5
- TI-2023-24501 HCL Sametime is impacted by a failure to invalidate sessions CVSS 3.1HIGH 7.5
- TI-2023-24490 HCL Sametime is impacted by an autocomplete enabled vulnerability CVSS 3.1HIGH 7.5
Sources
- CVE-2021-27772 · CVE Program
- CVE-2021-27772 · NVD
- FIRST EPSS
- GHSA-67g3-hq78-3fjw · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences