MEDIUM
CVE-2017-9503
CWE-476Published: June 16, 2017· Updated: Jun 17, 2026
5.5
CVSS v3.1
Official Description
QEMU (aka Quick Emulator), when built with MegaRAID SAS 8708EM2 Host Bus Adapter emulation support, allows local guest OS privileged users to cause a denial of service (NULL pointer dereference and QEMU process crash) via vectors involving megasas command processing.
Technical Analysis
CVE-2017-9503 requires local access, meaning attackers must already have a foothold on the target system.
Exploitation requires low privileges, which limits the exposure to scenarios where an attacker has already gained initial access.
A successful exploit results in availability disruption (denial of service), with a CVSS base score of 5.5.
CVSS v3.1 Vector Breakdown
Exploitability
Attack VectorLocal
Attack ComplexityLow
Privileges Req.Low
User InteractionNone
ScopeUnchanged
Impact
ConfidentialityNone
IntegrityNone
AvailabilityHigh
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Affected Vendors & Products
Exploit & PoC Resources
NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
External links open in a new tab. Always verify in a controlled environment before use.
Official Patches & Advisories
All References (14)
→
http://www.openwall.com/lists/oss-security/2017/06/08/1Mailing List · Patch · Third Party Advisory
→
http://www.securityfocus.com/bid/99010Third Party Advisory · VDB Entry
→
https://bugzilla.redhat.com/show_bug.cgi?id=1459477Issue Tracking · Patch · Third Party Advisory
→
https://lists.debian.org/debian-lts-announce/2018/09/msg00007.htmlThird Party Advisory
→
https://lists.debian.org/debian-lts-announce/2020/07/msg00020.htmlThird Party Advisory
→
https://lists.gnu.org/archive/html/qemu-devel/2017-06/msg01309.htmlIssue Tracking · Patch · Third Party Advisory
→
https://lists.gnu.org/archive/html/qemu-devel/2017-06/msg01313.htmlIssue Tracking · Patch · Third Party Advisory
→
http://www.openwall.com/lists/oss-security/2017/06/08/1Mailing List · Patch · Third Party Advisory
→
http://www.securityfocus.com/bid/99010Third Party Advisory · VDB Entry
→
https://bugzilla.redhat.com/show_bug.cgi?id=1459477Issue Tracking · Patch · Third Party Advisory
→
https://lists.debian.org/debian-lts-announce/2018/09/msg00007.htmlThird Party Advisory
→
https://lists.debian.org/debian-lts-announce/2020/07/msg00020.htmlThird Party Advisory
→
https://lists.gnu.org/archive/html/qemu-devel/2017-06/msg01309.htmlIssue Tracking · Patch · Third Party Advisory
→
https://lists.gnu.org/archive/html/qemu-devel/2017-06/msg01313.htmlIssue Tracking · Patch · Third Party Advisory
Quick Facts
CVE IDCVE-2017-9503
CVSS Score5.5 / 10
SeverityMEDIUM
WeaknessCWE-476
CISA KEVNo
Affected2 vendor(s)
PublishedJun 16, 2017
Related CVEs (CWE-476)
Recommended Actions
- →Apply vendor patches immediately
- →Monitor CVE-2017-9503 in threat intel feeds
- →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWATCH.COM. CVE data is provided under the NVD usage policy.