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CVE-2017-12809

23
FAUCET Score

CVE-2017-12809 describes a NULL pointer dereference vulnerability in QEMU, specifically affecting installations configured with IDE disk and CD/DVD-ROM emulation. A local, privileged guest OS user can trigger a denial of service by flushing an empty CDROM device, leading to a QEMU process crash. This vulnerability has a CVSS score of 6.5 (Medium), indicating a low attack complexity and requiring local privileges, but resulting in high availability impact. There is no evidence of active exploitation, publicly available exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
<= 2.9.1CPE matchmatch criteria
cpe:2.3:a:qemu:qemu:*:*:*:*:*:*:*:*
2.10.0CPE matchmatch criteria
cpe:2.3:a:qemu:qemu:2.10.0:rc0:*:*:*:*:*:*
2.10.0CPE matchmatch criteria
cpe:2.3:a:qemu:qemu:2.10.0:rc1:*:*:*:*:*:*
2.10.0CPE matchmatch criteria
cpe:2.3:a:qemu:qemu:2.10.0:rc2:*:*:*:*:*:*
9.0CPE matchmatch criteria
cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

6.5MEDIUM

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

Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
CHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
2.0
Impact Score
4.0
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.39%
Probability of exploitation in next 30 days
EPSS Percentile
31.2%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0039 is in the 87th 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 (8)

redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 7Fixed in: qemu-kvm-rhev
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux OpenStack Platform 5.0 (Icehouse) for RHEL 7Fixed in: qemu-kvm-rhev
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
redhatend of lifevia redhat_api
Product: Red Hat OpenStack Platform 10 (Newton)Fixed in: qemu-kvm-rhev
redhatend of lifevia redhat_api
Product: Red Hat OpenStack Platform 11 (Ocata)Fixed in: qemu-kvm-rhev
redhatend of lifevia redhat_api
Product: Red Hat OpenStack Platform 8 (Liberty)Fixed in: qemu-kvm-rhev
redhatend of lifevia redhat_api
Product: Red Hat OpenStack Platform 9 (Mitaka)Fixed in: qemu-kvm-rhev

Vendor Advisories (1)

redhatCVE-2017-12809Low

Qemu: ide: flushing of empty CDROM drives leads to NULL dereference

Jul 11, 2017

References

lists.gnu.org / archive/html/qemu-devel/2017-08/msg01850.html
PatchThird Party Advisory
debian.org / security/2017/dsa-3991
Third Party Advisory
openwall.com / lists/oss-security/2017/08/21/2
Mailing ListThird Party Advisory
securityfocus.com / bid/100451
Third Party AdvisoryVDB Entry