CVE-2008-4539

Heap-based buffer overflow in the Cirrus VGA implementation in (1) KVM before kvm-82 and (2) QEMU on Debian GNU/Linux and Ubuntu might allow local users to gain privileges by using the VNC console for a connection, aka the LGD-54XX "bitblt" heap overflow. NOTE: this issue exists because of an incorrect fix for CVE-2007-1320.

Published: 2008-12-29 Last update: 2026-04-23 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2008-4539 is rated Moderate Risk (43.6/100): CVSS High severity, with low exploitation likelihood (EPSS 0.54%). Review affected assets and schedule remediation.

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-2008-4539

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 2026-06-15 0.05% 0.54% +0.49%
2 2025-10-04 0.12% 0.05% -0.07%
3 2025-03-30 — 0.12% —

Full EPSS history (7 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2008-4539

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-2008-4539

OS Trackers for CVE-2008-4539

vendor priority summary link
debian low CVE-2008-4539 low priority: Debian including 1 source packages (qemu), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5. https://security-tracker.debian.org/tracker/CVE-2008-4539
redhat medium — https://access.redhat.com/security/cve/CVE-2008-4539
suse high CVE-2008-4539 severity important: SUSE including 243 source package names (qemu-0.10.1-0.5.7.1, qemu-10.0.3-160000.1.2, …), 327 product×package rows across 22 product lines (SUSE Linux Enterprise Desktop 12, SUSE Linux Enterprise Desktop 12 SP1, … (22 product lines)): Fixed 327. https://www.suse.com/security/cve/CVE-2008-4539/
ubuntu medium CVE-2008-4539 medium priority: Ubuntu including 3 source packages (kvm, qemu, qemu-kvm), 32 status rows across 11 suites (dapper, gutsy, hardy, intrepid, jaunty, karmic, lucid, maverick, natty, oneiric, upstream): DNE 15, ignored 6, not-affected 6, needs-triage 3, released 2. https://ubuntu.com/security/CVE-2008-4539

Affected software / configurations for CVE-2008-4539

Vendor Product Version Raw CPE
kvm_qumranet kvm <= 81 cpe:2.3:a:kvm_qumranet:kvm:*:*:*:*:*:*:*:*
qemu qemu < 0.10.0 cpe:2.3:a:qemu:qemu:*:*:*:*:*:*:*:*
canonical ubuntu_linux 8.04 cpe:2.3:o:canonical:ubuntu_linux:8.04:*:*:*:-:*:*:*
canonical ubuntu_linux 8.10 cpe:2.3:o:canonical:ubuntu_linux:8.10:*:*:*:*:*:*:*
debian debian_linux 4.0 cpe:2.3:o:debian:debian_linux:4.0:*:*:*:*:*:*:*
debian debian_linux 5.0 cpe:2.3:o:debian:debian_linux:5.0:*:*:*:*:*:*:*

References for CVE-2008-4539

URL Tags
http://git.kernel.dk/?p=qemu.git%3Ba=commitdiff%3Bh=65d35a09979e63541afc5bfc595b9f1b1b4ae069
http://groups.google.com/group/linux.debian.changes.devel/msg/9e0dc008572f2867?dmode=source Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2009-04/msg00003.html Mailing List Third Party Advisory
http://secunia.com/advisories/25073 Third Party Advisory
http://secunia.com/advisories/29129 Third Party Advisory
http://secunia.com/advisories/33350 Third Party Advisory
http://secunia.com/advisories/34642 Third Party Advisory
http://secunia.com/advisories/35031 Third Party Advisory
http://secunia.com/advisories/35062 Third Party Advisory
http://svn.savannah.gnu.org/viewvc/?view=rev&root=qemu&revision=5587 Third Party Advisory
http://www.debian.org/security/2009/dsa-1799 Third Party Advisory
http://www.mail-archive.com/cvs-all%40freebsd.org/msg129730.html
http://www.mail-archive.com/secure-testing-commits%40lists.alioth.debian.org/msg09322.html
http://www.ubuntu.com/usn/usn-776-1 Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=237342 Issue Tracking Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=448525 Issue Tracking Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=466890 Issue Tracking Third Party Advisory
https://exchange.xforce.ibmcloud.com/vulnerabilities/47736 Third Party Advisory VDB Entry
https://launchpad.net/ubuntu/jaunty/+source/qemu/0.9.1+svn20081112-1ubuntu1 Third Party Advisory
https://www.redhat.com/archives/fedora-package-announce/2008-December/msg01223.html Third Party Advisory
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