What is CVE-2025-52639?

CVE-2025-52639 is a low-severity vulnerability in Hcl Software Connections, classified under Insertion of Sensitive Information into Sent Data. CVSS score: 3.5/10. Published 2025-11-18.

How severe is CVE-2025-52639?

Low severity. CVSS v3 base score is 3.5 out of 10.

Vulnerability in Hcl Software Connections

CVE-2025-52639

HCL Connections is vulnerable to a sensitive information disclosure vulnerability which could allow a user to obtain sensitive information they are not entitled to, caused by improper rendering of application data.

Published 2025-11-18 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 3.5 (Low). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:N/A:N.

EPSS exploit prediction

EPSS: 0.002 (10.6th percentile), scored 2026-10-03.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 11th percentile — 10.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.002 · newest: 0.002 · change: 0.000

Affected products

Hcl Software Connections — versions 8.0
Hcltech Connections — versions 8.0

Weakness classification (CWE)

CWE-201 — Insertion of Sensitive Information into Sent Data

References

support.hcl-software.com/csm (Vendor Advisory)

Frequently asked questions

What is CVE-2025-52639?: CVE-2025-52639 is a low-severity vulnerability in Hcl Software Connections, classified under Insertion of Sensitive Information into Sent Data. CVSS score: 3.5/10. Published 2025-11-18.
How severe is CVE-2025-52639?: Low severity. CVSS v3 base score is 3.5 out of 10.