CVE-2021-27771

HIGH

Sametime - Privilege Escalation

Title source: llm
STIX 2.1

Description

User SID can be modified resulting in an Arbitrary File Upload or deletion of directories causing a Denial of Service. When interacting in a normal matter with the Sametime chat application, users hold a cookie containing their session ID (SID). This value is also used when sending chat messages, receiving notifications and/or transferring files.

References (1)

Core 1
Core References

Scores

CVSS v3 8.2
EPSS 0.0030
EPSS Percentile 53.6%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:H

Details

CWE
CWE-22 CWE-434
Status published
Products (1)
hcltech/sametime 11.6
Published May 12, 2022
Tracked Since Feb 18, 2026