Is CVE-2009-3616 being actively exploited?

CVE-2009-3616 is not currently listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.

What is the CVSS score for CVE-2009-3616?

CVE-2009-3616 has a CVSS 3.1 base score of 9.9 (CRITICAL).

CVE-2009-3616

CRITICAL · CVSS 9.9EPSS 3.9%EU EUVD

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.

Key facts

CVSS score: 9.9 (v3.1)
Severity: CRITICAL
CVSS vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
Weakness (CWE): CWE-416
EPSS score: 3.9% (90th percentile)
In CISA KEV: No
In EU EUVD: Yes (EUVD-2009-3597)
Published: October 23, 2009
NVD last modified: June 16, 2026
Status: Modified

EU Vulnerability Database (EUVD)

This vulnerability is also tracked by ENISA as EUVD-2009-3597 in the EU Vulnerability Database. Last updated in EUVD on August 7, 2024.

View on the EU Vulnerability Database

Affected products

qemu / qemu
redhat / enterprise linux server
redhat / enterprise linux workstation

Certified products that may be affected

1 FIPS 140 or Common Criteria certified product, from automated matching by sec-certs.org.

Red Hat Enterprise Linux 5 OpenSSH-Server Cryptographic Module - Red Hat®, Inc. - FIPS 140 1384 - historical

References

http://git.savannah.gnu.org/cgit/qemu.git/commit/?id=198a0039c5(Broken Link, Exploit)
http://git.savannah.gnu.org/cgit/qemu.git/commit/?id=753b405331(Broken Link, Exploit)
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 List, Patch)
http://www.openwall.com/lists/oss-security/2009/10/16/8(Mailing List, Patch)
http://www.securityfocus.com/bid/36716(Broken Link, Third Party Advisory, VDB Entry)
https://bugzilla.redhat.com/show_bug.cgi?id=501131(Issue Tracking, Patch)
https://bugzilla.redhat.com/show_bug.cgi?id=505641(Exploit, Issue Tracking)
https://bugzilla.redhat.com/show_bug.cgi?id=508567(Issue Tracking)

Last updated September 17, 2026 · Source: NVD, CISA KEV, FIRST.org EPSS

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