CVE-2008-1943

Buffer overflow in the backend of XenSource Xen Para Virtualized Frame Buffer (PVFB) 3.0 through 3.1.2 allows local users to cause a denial of service (crash) and possibly execute arbitrary code via a crafted description of a shared framebuffer.

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-2008-1943 is rated Low Risk (19/100): CVSS Low severity, with low exploitation likelihood (EPSS 0.14%). 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.

Exploit prediction scoring system (EPSS) score for CVE-2008-1943

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 2025-03-30 0.16% 0.14% -0.02%
2 2025-03-29 0.14% 0.16% +0.02%
3 2025-03-17 — 0.14% —

Full EPSS history (5 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2008-1943

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
2.1 2.0 LOW
AV:L/AC:L/Au:N/C:N/I:N/A:P 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:N)
No confidentiality impact.
Integrity impact (I:N)
No integrity impact.
Availability impact (A:P)
Partial availability impact.
 3.9 2.9 [email protected]

Weakness enumeration for CVE-2008-1943

OS Trackers for CVE-2008-1943

vendor priority summary link
redhat high — https://access.redhat.com/security/cve/CVE-2008-1943
ubuntu medium CVE-2008-1943 medium 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, needed 2, needs-triage 2. https://ubuntu.com/security/CVE-2008-1943

NVD evaluator notes for CVE-2008-1943

Comment: Possible solution and more infomation located here: http://rhn.redhat.com/errata/RHSA-2008-0194.html

Affected software / configurations for CVE-2008-1943

Vendor Product Version Raw CPE
xensource xen 3.0 cpe:2.3:a:xensource:xen:3.0:*:*:*:*:*:*:*
xensource xen 3.0.2 cpe:2.3:a:xensource:xen:3.0.2:*:*:*:*:*:*:*
xensource xen 3.0.3 cpe:2.3:a:xensource:xen:3.0.3:*:*:*:*:*:*:*
xensource xen 3.0.4 cpe:2.3:a:xensource:xen:3.0.4:*:*:*:*:*:*:*
xensource xen 3.1.2 cpe:2.3:a:xensource:xen:3.1.2:*:*:*:*:*:*:*

References for CVE-2008-1943

cvelogic Threat Intelligence