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CVE-2017-9503

21
FAUCET Score

CVE-2017-9503 describes a denial-of-service vulnerability in QEMU, specifically when configured with MegaRAID SAS 8708EM2 Host Bus Adapter emulation. A privileged user within a guest operating system can trigger a NULL pointer dereference, leading to a crash of the QEMU process. The vulnerability has a CVSS score of 5.5 (MEDIUM), indicating a local attack vector with low attack complexity and requiring low privileges, resulting in high availability impact. There is no known 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:*:*:*:*:*:*:*:*
8.0CPE matchmatch criteria
cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*
9.0CPE matchmatch criteria
cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*

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
0.41%
Probability of exploitation in next 30 days
EPSS Percentile
34.1%
Percentile rank of EPSS score among Peer Group
As of 2026-07-26
Model: v2026.06.15
This CVE's current EPSS score of 0.0042 is in the 89th percentile among its peer group of 15,937 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

Patch Available

Vendor Patches (1)

redhatpatch availablevia nvd_reference
View patch

Vendor Advisories (1)

redhatCVE-2017-9503Low

Qemu: scsi: megasas: null pointer dereference while processing megasas command

May 10, 2017

References

bugzilla.redhat.com / show_bug.cgi
Issue TrackingPatchThird Party Advisory
lists.debian.org / debian-lts-announce/2018/09/msg00007.html
Third Party Advisory
lists.debian.org / debian-lts-announce/2020/07/msg00020.html
Third Party Advisory
lists.gnu.org / archive/html/qemu-devel/2017-06/msg01309.html
Issue TrackingPatchThird Party Advisory
lists.gnu.org / archive/html/qemu-devel/2017-06/msg01313.html
Issue TrackingPatchThird Party Advisory
openwall.com / lists/oss-security/2017/06/08/1
Mailing ListPatchThird Party Advisory
securityfocus.com / bid/99010
Third Party AdvisoryVDB Entry