The backend for XenSource Xen Para Virtualized Frame Buffer (PVFB) in Xen ioemu does not properly restrict the frame buffer size, which allows attackers to cause a denial of service (crash) by mapping an arbitrary amount of guest memory.
Conclusion & alert: CVE-2008-1952 is rated Low Risk (15.8/100): CVSS Low severity, with low exploitation likelihood (EPSS 0.06%). 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 | 2023-03-07 | 1.28% | 0.06% | -1.22% |
| 2 | 2022-02-04 | — | 1.28% | — |
Full EPSS history (2 records total)
CVSS metrics for this CVE.
| Base score | Version | Severity | Vector | Exploitability | Impact | Score source |
|---|---|---|---|---|---|---|
| 2.1 | 2.0 | LOW |
|
3.9 | 2.9 | [email protected] |
| vendor | priority | summary | link |
|---|---|---|---|
redhat
|
high | — | https://access.redhat.com/security/cve/CVE-2008-1952 |
ubuntu
|
medium | CVE-2008-1952 medium priority: Ubuntu including 5 source packages (xen, xen-3.0, xen-3.1, xen-3.2, xen-3.3), 60 status rows across 12 suites (dapper, feisty, gutsy, hardy, intrepid, jaunty, karmic, lucid, maverick, natty, oneiric, upstream): DNE 42, not-affected 9, ignored 5, needs-triage 4. | https://ubuntu.com/security/CVE-2008-1952 |
| Vendor | Product | Version | Raw CPE |
|---|---|---|---|
| xensource | xen_para_virtualized_frame_buffer | — | cpe:2.3:a:xensource:xen_para_virtualized_frame_buffer:*:*:*:*:*:*:*:* |