What is CVE-2016-4964?

CVE-2016-4964 is a medium-severity vulnerability in Qemu. CVSS score: 6.0/10. Published 2016-12-10.

How severe is CVE-2016-4964?

Medium severity. CVSS v3 base score is 6.0 out of 10.

Vulnerability in Qemu

CVE-2016-4964

The mptsas_fetch_requests function in hw/scsi/mptsas.c in QEMU (aka Quick Emulator) allows local guest OS administrators to cause a denial of service (infinite loop, and CPU consumption or QEMU process crash) via vectors involving s->state.

Published 2016-12-10 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 6.0 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:N/I:N/A:H.

EPSS exploit prediction

EPSS: 0.004 (30.6th percentile), scored 2026-09-30.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 31st percentile — 30.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.004 · newest: 0.004 · change: 0.000

Affected products

Qemu

References

www.openwall.com/lists/oss-security/2016/05/24/7 (mailing-list, Mailing List, Third Party Advisory)
lists.gnu.org/archive/html/qemu-devel/2016-05/msg04027.html (mailing-list, Patch, Third Party Advisory)
git.qemu.org/
www.openwall.com/lists/oss-security/2016/05/24/4 (mailing-list, Mailing List, Third Party Advisory)
security.gentoo.org/glsa/201609-01 (vendor-advisory, Third Party Advisory)

Frequently asked questions

What is CVE-2016-4964?: CVE-2016-4964 is a medium-severity vulnerability in Qemu. CVSS score: 6.0/10. Published 2016-12-10.
How severe is CVE-2016-4964?: Medium severity. CVSS v3 base score is 6.0 out of 10.