CVE-2021-27773
HCL Sametime is vulnerable to clickjacking
This vulnerability allows users to execute a clickjacking attack in the meeting's chat.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- High
- Privileges needed
- None
- User interaction
- Required
What an attacker can affect
- Confidentiality
- Low
- Integrity
- Low
- Availability
- None
Exploit likelihood
What each source reports
CVE List Score used
HCL Sametime is vulnerable to clickjacking
This vulnerability allows users to execute a clickjacking attack in the meeting's chat.
- Record
CVE-2021-27773- CVSS 3.1
- 4.2 Medium
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:N - Weakness
- CWE-451
- Updated
- 2026-11-02
EUVDEUVD-2021-14514
This vulnerability allows users to execute a clickjacking attack in the meeting's chat.
- Record
EUVD-2021-14514- CVSS 3.1
- 4.2 Medium
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:N - Updated
- 2026-11-03
GitHub AdvisoriesGHSA-rrwg-382g-w6j8
This vulnerability allows users to execute a clickjacking attack in the meeting's chat.
This vulnerability allows users to execute a clickjacking attack in the meeting's chat.
- Record
GHSA-rrwg-382g-w6j8- CVSS 3.1
- 4.3 Medium
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N - Weakness
- CWE-1021
- Updated
- 2026-11-02
NVD
This vulnerability allows users to execute a clickjacking attack in the meeting's chat.
- Record
CVE-2021-27773- CVSS 3.1
- 4.2 Medium
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:N - CVSS 3.1
- 4.3 Medium
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N - CVSS 2.0
- 4.3 Medium
AV:N/AC:M/Au:N/C:N/I:P/A:N - Weakness
- CWE-451, CWE-1021
- Updated
- 2026-11-02
Affected products
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases, products, published | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2021-27773 is a medium vulnerability (CVSS 4.2) in Hcl Sametime, published May 12, 2022. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.47%, the 40th percentile. No source names a fixed version.