Is CVE-2016-5403 being actively exploited?

CVE-2016-5403 is not currently listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.

What is the CVSS score for CVE-2016-5403?

CVE-2016-5403 has a CVSS 3.1 base score of 5.5 (MEDIUM).

CVE-2016-5403

MEDIUM · CVSS 5.5EPSS 0.5%EU EUVD

The virtqueue_pop function in hw/virtio/virtio.c in QEMU allows local guest OS administrators to cause a denial of service (memory consumption and QEMU process crash) by submitting requests without waiting for completion.

Key facts

CVSS score: 5.5 (v3.1)
Severity: MEDIUM
CVSS vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Weakness (CWE): CWE-400
EPSS score: 0.5% (43th percentile)
In CISA KEV: No
In EU EUVD: Yes (EUVD-2016-6348)
Published: August 2, 2016
NVD last modified: June 17, 2026
Status: Modified

EU Vulnerability Database (EUVD)

This vulnerability is also tracked by ENISA as EUVD-2016-6348 in the EU Vulnerability Database. Last updated in EUVD on August 6, 2024.

View on the EU Vulnerability Database

Affected products

canonical / ubuntu linux
canonical / ubuntu linux
canonical / ubuntu linux
debian / debian linux
oracle / linux
oracle / linux
oracle / linux
oracle / vm server
qemu / qemu
qemu / qemu
redhat / enterprise linux desktop
redhat / enterprise linux desktop
redhat / enterprise linux server
redhat / enterprise linux server
redhat / enterprise linux server aus
redhat / enterprise linux server aus
redhat / enterprise linux server aus
redhat / enterprise linux server aus
redhat / enterprise linux server aus
redhat / enterprise linux server aus
redhat / enterprise linux server eus
redhat / enterprise linux server eus
redhat / enterprise linux server eus
redhat / enterprise linux server eus
redhat / enterprise linux server eus
redhat / enterprise linux server eus
redhat / enterprise linux server tus
redhat / enterprise linux server tus
redhat / enterprise linux server tus
redhat / enterprise linux server tus
redhat / enterprise linux workstation
redhat / enterprise linux workstation
redhat / openstack
redhat / openstack
redhat / openstack
redhat / openstack
redhat / openstack
redhat / virtualization

Certified products that may be affected

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

Oracle Linux 7 NSS Cryptographic Module - Oracle Corporation - FIPS 140 4586 - historical
Oracle Linux 7 Libreswan Cryptographic Module - Oracle Corporation - FIPS 140 4266 - historical
Oracle Linux 7 OpenSSH Client Cryptographic Module - Oracle Corporation - FIPS 140 4206 - historical
Oracle Linux 7 OpenSSH Server Cryptographic Module - Oracle Corporation - FIPS 140 4176 - historical
Oracle Linux 7 Unbreakable Enterprise Kernel (UEK 6) Cryptographic Module - Oracle Corporation - FIPS 140 4169 - historical

See all 29 in the Security Certifications Explorer.

References

http://rhn.redhat.com/errata/RHSA-2016-1585.html(Third Party Advisory)
http://rhn.redhat.com/errata/RHSA-2016-1586.html(Third Party Advisory)
http://rhn.redhat.com/errata/RHSA-2016-1606.html(Third Party Advisory)
http://rhn.redhat.com/errata/RHSA-2016-1607.html(Third Party Advisory)
http://rhn.redhat.com/errata/RHSA-2016-1652.html(Third Party Advisory)
http://rhn.redhat.com/errata/RHSA-2016-1653.html(Third Party Advisory)
http://rhn.redhat.com/errata/RHSA-2016-1654.html(Third Party Advisory)
http://rhn.redhat.com/errata/RHSA-2016-1655.html(Third Party Advisory)
http://rhn.redhat.com/errata/RHSA-2016-1756.html(Third Party Advisory)
http://rhn.redhat.com/errata/RHSA-2016-1763.html(Third Party Advisory)
http://rhn.redhat.com/errata/RHSA-2016-1943.html(Third Party Advisory)
http://www.oracle.com/technetwork/topics/security/linuxbulletinjul2016-3090544.html(Third Party Advisory)
http://www.oracle.com/technetwork/topics/security/linuxbulletinoct2016-3090545.html(Third Party Advisory)
http://www.oracle.com/technetwork/topics/security/ovmbulletinjul2016-3090546.html(Third Party Advisory)
http://www.securityfocus.com/bid/92148(Third Party Advisory, VDB Entry)
http://www.securitytracker.com/id/1036476(Third Party Advisory, VDB Entry)
http://www.ubuntu.com/usn/USN-3047-1(Third Party Advisory)
http://www.ubuntu.com/usn/USN-3047-2(Third Party Advisory)
http://xenbits.xen.org/xsa/advisory-184.html(Patch, Third Party Advisory)
https://bugzilla.redhat.com/show_bug.cgi?id=1358359(Issue Tracking, Third Party Advisory)
https://lists.debian.org/debian-lts-announce/2019/09/msg00021.html(Mailing List, Third Party Advisory)

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

Query CVEs from your AI assistant

The CVE/NVD Explorer brain answers CVE questions directly inside Claude, ChatGPT, or any MCP assistant — always up to date, no setup. Add it once and stop pasting advisories into chat.

Add the CVE brain