HCL Sametime is vulnerable to broken server-side validation. While the application performs client-side input checks, these are not enforced by the web server. An attacker can bypass these restrictions by sending manipulated HTTP requests directly to the server.
Conclusion & alert: CVE-2025-31966 is rated Low Risk (14.2/100): CVSS Low severity, with low exploitation likelihood (EPSS 0.19%). Mandatory action: Low composite risk—no urgent action required; patch on your normal maintenance cycle and revisit priority if CVSS or EPSS increases.
Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.
EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).
| # | Date | Old EPSS score | New EPSS score | Delta (New - Old) |
|---|---|---|---|---|
| 1 | 2026-06-15 | 0.07% | 0.19% | +0.13% |
| 2 | 2026-04-01 | 0.04% | 0.07% | +0.03% |
| 3 | 2026-03-17 | — | 0.04% | — |
Full EPSS history (3 records total)
CVSS metrics for this CVE.
| Base score | Version | Severity | Vector | Exploitability | Impact | Score source |
|---|---|---|---|---|---|---|
| 2.7 | 3.1 | LOW |
|
1.2 | 1.4 | [email protected] |
| URL | Tags |
|---|---|
| https://support.hcl-software.com/csm?id=kb_article&sysparm_article=KB0124722 | Vendor Advisory |