What is CVE-2021-27771?

CVE-2021-27771 is a high-severity vulnerability in Hcl Software Sametime, classified under Path Traversal. CVSS score: 8.2/10. Published 2022-05-12.

How severe is CVE-2021-27771?

High severity. CVSS v3 base score is 8.2 out of 10.

Path Traversal in Hcl Software Sametime

CVE-2021-27771

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.

Vulnerability class: Path Traversal (Directory Traversal)

EPSS: 0.007 (48.8th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 8.2 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:H.

Affected products

Hcl Software Sametime — versions 11.6
Hcltech Sametime — versions 11.6

Weakness classification (CWE)

References

psirt@hcl.com (x_refsource_MISC, Vendor Advisory)

Frequently asked questions

What is CVE-2021-27771?: CVE-2021-27771 is a high-severity vulnerability in Hcl Software Sametime, classified under Path Traversal. CVSS score: 8.2/10. Published 2022-05-12.
How severe is CVE-2021-27771?: High severity. CVSS v3 base score is 8.2 out of 10.