What is CVE-2021-27764?

CVE-2021-27764 is a high-severity vulnerability in Hcl Software Bigfix Webui, classified under Sensitive Cookie in HTTPS Session Without 'Secure' Attribute. CVSS score: 7.4/10. Published 2022-05-06.

How severe is CVE-2021-27764?

High severity. CVSS v3 base score is 7.4 out of 10.

Vulnerability in Hcl Software Bigfix Webui

CVE-2021-27764

Cookie without HTTPONLY flag set. NUMBER cookie(s) was set without Secure or HTTPOnly flags. The images show the cookie with the missing flag. (WebUI)

Published 2022-05-06 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 7.4 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:N/A:N.

EPSS exploit prediction

EPSS: 0.006 (44.0th percentile), scored 2026-09-29.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 44th percentile — 44.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.005 · newest: 0.006 · change: +0.000

Affected products

Hcl Software Bigfix Webui — versions 9.0, 10.0
Hcltech Bigfix Webui

Weakness classification (CWE)

References

support.hcltechsw.com/csm (Vendor Advisory)

Frequently asked questions

What is CVE-2021-27764?: CVE-2021-27764 is a high-severity vulnerability in Hcl Software Bigfix Webui, classified under Sensitive Cookie in HTTPS Session Without 'Secure' Attribute. CVSS score: 7.4/10. Published 2022-05-06.
How severe is CVE-2021-27764?: High severity. CVSS v3 base score is 7.4 out of 10.