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Vulnerability record · CVE-2009-3616 · published 23 October 2009

CVE-2009-3616: Qemu use after free vulnerability

Qemu · Qemu

Multiple use-after-free vulnerabilities in vnc.c in the VNC server in QEMU 0.10.6 and earlier might allow guest OS users to execute arbitrary code on the host OS by establishing a connection from a VNC client and then (1) disconnecting during data transfer, (2) sending a message using incorrect integer data types, or (3) using the Fuzzy Screen Mode protocol, related to double free vulnerabilities.

9.9 CVSS 3.1 Critical EPSS 3.9% · top 10.2% CWE-416 · Use after free
9.9CVSS 3.1 base score, v2 8.5
3.9%EPSS exploitation probability, 30 days
NoNot in CISA KEV
3Affected product versions listed by NVD
20References, 6 tagged exploit
16 Jun 2026Last modified by NVD

Description

Multiple use-after-free vulnerabilities in vnc.c in the VNC server in QEMU 0.10.6 and earlier might allow guest OS users to execute arbitrary code on the host OS by establishing a connection from a VNC client and then (1) disconnecting during data transfer, (2) sending a message using incorrect integer data types, or (3) using the Fuzzy Screen Mode protocol, related to double free vulnerabilities.

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

Affected products

3 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
http://git.savannah.gnu.org/cgit/qemu.git/commit/?id=198a0039c5 Broken LinkExploit
http://git.savannah.gnu.org/cgit/qemu.git/commit/?id=753b405331 Broken LinkExploit
http://marc.info/?l=qemu-devel&m=124324043812915 Mailing List
http://rhn.redhat.com/errata/RHEA-2009-1272.html Third Party Advisory
http://www.openwall.com/lists/oss-security/2009/10/16/5 Mailing ListPatch
http://www.openwall.com/lists/oss-security/2009/10/16/8 Mailing ListPatch
http://www.securityfocus.com/bid/36716 Broken LinkThird Party AdvisoryVDB Entry
https://bugzilla.redhat.com/show_bug.cgi?id=501131 Issue TrackingPatch
https://bugzilla.redhat.com/show_bug.cgi?id=505641 ExploitIssue Tracking
https://bugzilla.redhat.com/show_bug.cgi?id=508567 Issue Tracking
http://git.savannah.gnu.org/cgit/qemu.git/commit/?id=198a0039c5 Broken LinkExploit
http://git.savannah.gnu.org/cgit/qemu.git/commit/?id=753b405331 Broken LinkExploit
http://marc.info/?l=qemu-devel&m=124324043812915 Mailing List
http://rhn.redhat.com/errata/RHEA-2009-1272.html Third Party Advisory
http://www.openwall.com/lists/oss-security/2009/10/16/5 Mailing ListPatch
http://www.openwall.com/lists/oss-security/2009/10/16/8 Mailing ListPatch
http://www.securityfocus.com/bid/36716 Broken LinkThird Party AdvisoryVDB Entry
https://bugzilla.redhat.com/show_bug.cgi?id=501131 Issue TrackingPatch
https://bugzilla.redhat.com/show_bug.cgi?id=505641 ExploitIssue Tracking
https://bugzilla.redhat.com/show_bug.cgi?id=508567 Issue Tracking

Track CVE-2009-3616 inside VULONE

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Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2009-3616), CISA KEV, FIRST EPSS (scores of 2026-09-28). This page is refreshed as NVD updates the record.