Xfce4-session 4.5.91 in Xfce does not lock the screen when the suspend or hibernate button is pressed, which might make it easier for physically proximate attackers to access an unattended laptop via a resume action, a related issue to CVE-2010-2532. NOTE: there is no general agreement that this is a vulnerability, because separate control over locking can be an equally secure, or more secure, behavior in some threat environments
Conclusion & alert: CVE-2009-4996 is rated Moderate Risk (41.8/100): CVSS High severity, with low exploitation likelihood (EPSS 0.15%). Mandatory action: Review affected assets and schedule remediation.
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 | 2025-09-15 | 0.06% | 0.15% | +0.10% |
| 2 | 2024-09-17 | 0.04% | 0.06% | +0.02% |
| 3 | 2024-02-08 | — | 0.04% | — |
Full EPSS history (5 records total)
CVSS metrics for this CVE.
| Base score | Version | Severity | Vector | Exploitability | Impact | Score source |
|---|---|---|---|---|---|---|
| 7.2 | 2.0 | HIGH |
|
3.9 | 10.0 | [email protected] |
| vendor | priority | summary | link |
|---|---|---|---|
ubuntu
|
low | CVE-2009-4996 low priority: Ubuntu including 1 source packages (xfce4-session), 10 status rows across 10 suites (dapper, hardy, jaunty, karmic, lucid, maverick, natty, oneiric, precise, upstream): ignored 9, needs-triage 1. | https://ubuntu.com/security/CVE-2009-4996 |