CVE-2008-1944

Buffer overflow in the backend framebuffer of XenSource Xen Para-Virtualized Framebuffer (PVFB) Message 3.0 through 3.0.3 allows local users to cause a denial of service (SDL crash) and possibly execute arbitrary code via "bogus screen updates," related to missing validation of the "format of messages."

Published: 2008-05-14 Last update: 2026-04-23 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2008-1944 is rated Low Risk (35.8/100): CVSS High severity, with low exploitation likelihood (EPSS 0.07%). Monitor for updates and reassess as exploit intelligence or EPSS changes.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2008-1944

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 2025-03-17 0.04% 0.07% +0.03%
2 2023-03-07 1.75% 0.04% -1.71%
3 2023-02-13 — 1.75% —

Full EPSS history (5 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2008-1944

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
7.2 2.0 HIGH
AV:L/AC:L/Au:N/C:C/I:C/A:C Click to expand
Access vector (AV:L)
Requires local access to the target system.
Access complexity (AC:L)
Exploitation conditions are straightforward and predictable.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:C)
Complete confidentiality impact.
Integrity impact (I:C)
Complete integrity impact.
Availability impact (A:C)
Complete availability impact.
 3.9 10.0 [email protected]

Weakness enumeration for CVE-2008-1944

OS Trackers for CVE-2008-1944

vendor priority summary link
redhat high — https://access.redhat.com/security/cve/CVE-2008-1944
ubuntu low CVE-2008-1944 low priority: Ubuntu including 7 source packages (kvm, qemu, …), 82 status rows across 12 suites (dapper, feisty, gutsy, hardy, intrepid, jaunty, karmic, lucid, maverick, natty, oneiric, upstream): DNE 48, not-affected 25, ignored 5, needs-triage 4. https://ubuntu.com/security/CVE-2008-1944

NVD evaluator notes for CVE-2008-1944

Impact: https://bugzilla.redhat.com/show_bug.cgi?id=443078 "The PVFB backend is a user space program running as root in dom0"

Affected software / configurations for CVE-2008-1944

Vendor Product Version Raw CPE
xensource xen 3.0 cpe:2.3:a:xensource:xen:3.0:*:*:*:*:*:*:*
xensource xen 3.0.3 cpe:2.3:a:xensource:xen:3.0.3:*:*:*:*:*:*:*

References for CVE-2008-1944

cvelogic Threat Intelligence