Predictive Vulnerability Intelligence.

Product

  • Product
  • Pricing
  • Documentation

Company

  • About
  • Partnerships
  • Blog
  • Support

Legal

  • Terms
  • Privacy
  • Data Licensing

© 2026 FAUCET Technologies LLC. All rights reserved.

CVE-2016-1922

20
FAUCET Score

CVE-2016-1922 describes a null pointer dereference vulnerability in QEMU, specifically affecting 32-bit Windows guests when the TPR optimization is enabled. This flaw occurs during I/O port write operations via the HMP interface, where the 'current_cpu' remains null, leading to a system crash. With a CVSS score of 5.5 (Medium), this vulnerability can be triggered by a local attacker with low privileges, resulting in a denial-of-service condition. There is no known active exploitation, publicly available exploit code, or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
<= 2.5.1.1CPE matchmatch criteria
cpe:2.3:a:qemu:qemu:*:*:*:*:*:*:*:*
7.0CPE matchmatch criteria
cpe:2.3:o:debian:debian_linux:7.0:*:*:*:*:*:*:*
8.0CPE matchmatch criteria
cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

5.5MEDIUM

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

Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
1.8
Impact Score
3.6
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.43%
Probability of exploitation in next 30 days
EPSS Percentile
35.5%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0043 is in the 90th percentile among its peer group of 15,938 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.0 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Vendor Patches (3)

redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 7Fixed in: qemu-kvm
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux OpenStack Platform 6 (Juno)Fixed in: qemu-kvm-rhev
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux OpenStack Platform 7 (Kilo)Fixed in: qemu-kvm-rhev

Vendor Advisories (1)

redhatCVE-2016-1922Low

Qemu: i386: null pointer dereference in vapic_write()

Dec 18, 2015

References

bugzilla.redhat.com / show_bug.cgi
Issue TrackingThird Party Advisory
lists.gnu.org / archive/html/qemu-devel/2016-01/msg02812.html
PatchVendor Advisory
security.gentoo.org / glsa/201604-01
Third Party Advisory
debian.org / security/2016/dsa-3469
Third Party Advisory
debian.org / security/2016/dsa-3470
Third Party Advisory
debian.org / security/2016/dsa-3471
Third Party Advisory
openwall.com / lists/oss-security/2016/01/16/1
Mailing ListThird Party Advisory
openwall.com / lists/oss-security/2016/01/16/6
Mailing ListThird Party Advisory
securityfocus.com / bid/81058
Third Party AdvisoryVDB Entry