CVE-2021-27771

HighCVSS 7.6/10Last modified Jun 17, 2026

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.

Metrics

CVSS 3.1 7.6/10CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:H

Weakness enumeration

Affected software

No affected versions have been published.

Timeline

Published
May 12, 2022
Last modified
Jun 17, 2026
NVD status
Modified

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CVE-2021-27771: High severity, CVSS 7.6 | Vulnix