What is CVE-2025-51734?

CVE-2025-51734 is a medium-severity vulnerability in Hcltech Unica, classified under Cross-site Scripting. CVSS score: 5.4/10. Published 2025-11-28.

How severe is CVE-2025-51734?

Medium severity. CVSS v3 base score is 5.4 out of 10.

XSS in Hcltech Unica

CVE-2025-51734

Cross-site scripting (XSS) vulnerability in HCL Technologies Ltd. Unica 12.0.0.

Vulnerability class: XSS (Cross-Site Scripting)

Published 2025-11-28 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 5.4 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N.

EPSS exploit prediction

EPSS: 0.002 (6.3th percentile), scored 2026-09-29.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 6th percentile — 6.3% 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

Hcltech Unica — versions 12.0.0

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

gist.github.com/ikpehlivan/4361fa808e04d884e4771be88e891ec2 (Third Party Advisory)

Frequently asked questions

What is CVE-2025-51734?: CVE-2025-51734 is a medium-severity vulnerability in Hcltech Unica, classified under Cross-site Scripting. CVSS score: 5.4/10. Published 2025-11-28.
How severe is CVE-2025-51734?: Medium severity. CVSS v3 base score is 5.4 out of 10.