CVE-2021-27760
HCL Notes 11.0 - 11.0.1 FP4 Sametime Embedded chat clients are vulnerable to group chats loading script on restart
Severity Score
5.5
*CVSS v3.1
Exploit Likelihood
*EPSS
Affected Versions
*CPE
Public Exploits
0
*Multiple Sources
Exploited in Wild
-
*KEV
Decision
-
*SSVC
Descriptions
An issue was discovered in the Sametime chat feature in the Notes 11.0 - 11.0.1 FP4 clients. An authenticated Sametime chat user could cause Remote Code Execution on another chat client by sending a specially formatted message through chat containing Javascript code.
Se ha detectado un problema en la funcionalidad de chat de Sametime en los clientes Notes 11.0 - 11.0.1 FP4. Un usuario autenticado del chat de Sametime podría causar una Ejecución de Código Remota en otro cliente de chat mediante el envío de un mensaje con formato especial mediante el chat que contenga código Javascript
*Credits:
N/A
CVSS Scores
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability
Attack Vector
Attack Complexity
Authentication
Confidentiality
Integrity
Availability
* Common Vulnerability Scoring System
SSVC
- Decision:-
Exploitation
Automatable
Tech. Impact
* Organization's Worst-case Scenario
Timeline
- 2021-02-26 CVE Reserved
- 2022-05-06 CVE Published
- 2024-09-17 CVE Updated
- 2025-03-30 EPSS Updated
- ---------- Exploited in Wild
- ---------- KEV Due Date
- ---------- First Exploit
CWE
- CWE-20: Improper Input Validation
CAPEC
References (1)
| URL | Tag | Source |
|---|---|---|
| https://support.hcltechsw.com/csm?id=kb_article&sysparm_article=KB0097670 | Third Party Advisory |
| URL | Date | SRC |
|---|
| URL | Date | SRC |
|---|
| URL | Date | SRC |
|---|
Affected Vendors, Products, and Versions
| Vendor | Product | Version | Other | Status | ||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Vendor | Product | Version | Other | Status | <-- --> | Vendor | Product | Version | Other | Status |
| Hcltech Search vendor "Hcltech" | Hcl Inotes Search vendor "Hcltech" for product "Hcl Inotes" | 11.0.0 Search vendor "Hcltech" for product "Hcl Inotes" and version "11.0.0" | - |
Affected
| ||||||
| Hcltech Search vendor "Hcltech" | Hcl Inotes Search vendor "Hcltech" for product "Hcl Inotes" | 11.0.1 Search vendor "Hcltech" for product "Hcl Inotes" and version "11.0.1" | - |
Affected
| ||||||
| Hcltech Search vendor "Hcltech" | Hcl Inotes Search vendor "Hcltech" for product "Hcl Inotes" | 11.0.1 Search vendor "Hcltech" for product "Hcl Inotes" and version "11.0.1" | fixpack1 |
Affected
| ||||||
| Hcltech Search vendor "Hcltech" | Hcl Inotes Search vendor "Hcltech" for product "Hcl Inotes" | 11.0.1 Search vendor "Hcltech" for product "Hcl Inotes" and version "11.0.1" | fixpack2 |
Affected
| ||||||
| Hcltech Search vendor "Hcltech" | Hcl Inotes Search vendor "Hcltech" for product "Hcl Inotes" | 11.0.1 Search vendor "Hcltech" for product "Hcl Inotes" and version "11.0.1" | fixpack3 |
Affected
| ||||||
| Hcltech Search vendor "Hcltech" | Hcl Inotes Search vendor "Hcltech" for product "Hcl Inotes" | 11.0.1 Search vendor "Hcltech" for product "Hcl Inotes" and version "11.0.1" | fixpack4 |
Affected
| ||||||