pygrub (tools/pygrub/src/GrubConf.py) in Xen 3.0.3, when booting a guest domain, allows local users with elevated privileges in the guest domain to execute arbitrary commands in domain 0 via a crafted grub.conf file whose contents are used in exec statements.
Conclusion & alert: CVE-2007-4993 is rated High Exploit Risk (60/100): CVSS Medium severity, with low exploitation likelihood (EPSS 0.26%). Core evidence: 1 public exploit reference(s) are indexed (Exploit-DB). Mandatory action: Public exploits are available—assess exposure, apply mitigations, and prioritize patching.
Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.
| EDB-ID | Source | Kind | Published | Link |
|---|---|---|---|---|
| 30620 | exploit_db | edb | 2007-09-22 | Exploit-DB ↗ |
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 | 2026-02-12 | 0.16% | 0.26% | +0.10% |
| 2 | 2025-03-17 | 0.04% | 0.16% | +0.12% |
| 3 | 2023-03-07 | — | 0.04% | — |
Full EPSS history (4 records total)
CVSS metrics for this CVE.
| Base score | Version | Severity | Vector | Exploitability | Impact | Score source |
|---|---|---|---|---|---|---|
| 6.9 | 2.0 | MEDIUM |
|
3.4 | 10.0 | [email protected] |
| vendor | priority | summary | link |
|---|---|---|---|
redhat
|
high | — | https://access.redhat.com/security/cve/CVE-2007-4993 |
ubuntu
|
medium | CVE-2007-4993 medium priority: Ubuntu including 2 source packages (xen-3.0, xen-3.1), 6 status rows across 5 suites (dapper, edgy, feisty, gutsy, upstream): needs-triage 2, released 2, DNE 1, ignored 1. | https://ubuntu.com/security/CVE-2007-4993 |
| Vendor | Product | Version | Raw CPE |
|---|---|---|---|
| xensource_inc | xen | 3.0.3 | cpe:2.3:a:xensource_inc:xen:3.0.3:*:*:*:*:*:*:* |