HOME VULNERABILITIESCVE-2015-7549

MEDIUM

CVE-2015-7549

CWE-476Published: October 30, 2017· Updated: Jun 17, 2026

6.0

CVSS v3.1

Official Description

The MSI-X MMIO support in hw/pci/msix.c in QEMU (aka Quick Emulator) allows local guest OS privileged users to cause a denial of service (NULL pointer dereference and QEMU process crash) by leveraging failure to define the .write method.

Technical Analysis

CVE-2015-7549 requires local access, meaning attackers must already have a foothold on the target system.

Exploitation requires high 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 6.0.

The vulnerability has a "Changed" scope, meaning successful exploitation can impact components beyond the vulnerable component itself — such as the host operating system or adjacent services.

CVSS v3.1 Vector Breakdown

Exploitability

Attack VectorLocal

Attack ComplexityLow

Privileges Req.High

User InteractionNone

ScopeChanged

Impact

ConfidentialityNone

IntegrityNone

AvailabilityHigh

CVSS:3.0/AV:L/AC:L/PR:H/UI:N/S:C/C:N/I:N/A:H

Affected Vendors & Products

qemu1 product(s)

qemu

Source: NVD CPE · 1 total CPE entries

Exploit & PoC Resources

NO KNOWN EXPLOITNo public exploit confirmed at this time

Offensive Security exploit database

GitHub PoC Search

Community PoC repositories

Rapid7 / Metasploit

Metasploit module search

Security advisories & exploits

Official NIST entry

CVE Program entry

External links open in a new tab. Always verify in a controlled environment before use.

Official Patches & Advisories

ADVISORYhttp://lists.fedoraproject.org/pipermail/package-announce/2016-January/175380.html

ADVISORYhttp://www.debian.org/security/2016/dsa-3471

ADVISORYhttp://www.openwall.com/lists/oss-security/2015/12/14/2

ADVISORYhttp://www.securityfocus.com/bid/80761

ADVISORYhttps://bugzilla.redhat.com/show_bug.cgi?id=1291137

ADVISORYhttps://security.gentoo.org/glsa/201602-01

ADVISORYhttp://lists.fedoraproject.org/pipermail/package-announce/2016-January/175380.html

ADVISORYhttp://www.debian.org/security/2016/dsa-3471

ADVISORYhttp://www.openwall.com/lists/oss-security/2015/12/14/2

ADVISORYhttp://www.securityfocus.com/bid/80761

ADVISORYhttps://bugzilla.redhat.com/show_bug.cgi?id=1291137

ADVISORYhttps://security.gentoo.org/glsa/201602-01

All References (14)

→

http://git.qemu.org/?p=qemu.git%3Ba=commit%3Bh=43b11a91dd861a946b231b89b754285

→

http://lists.fedoraproject.org/pipermail/package-announce/2016-January/175380.htmlIssue Tracking · Third Party Advisory

→

http://www.debian.org/security/2016/dsa-3471Issue Tracking · Third Party Advisory

→

http://www.openwall.com/lists/oss-security/2015/12/14/2Issue Tracking · Mailing List · Third Party Advisory

→

http://www.securityfocus.com/bid/80761Third Party Advisory · VDB Entry

→

https://bugzilla.redhat.com/show_bug.cgi?id=1291137Issue Tracking · Third Party Advisory

→

https://security.gentoo.org/glsa/201602-01Issue Tracking · Third Party Advisory

→

http://git.qemu.org/?p=qemu.git%3Ba=commit%3Bh=43b11a91dd861a946b231b89b754285

→

http://lists.fedoraproject.org/pipermail/package-announce/2016-January/175380.htmlIssue Tracking · Third Party Advisory

→

http://www.debian.org/security/2016/dsa-3471Issue Tracking · Third Party Advisory

→

http://www.openwall.com/lists/oss-security/2015/12/14/2Issue Tracking · Mailing List · Third Party Advisory

→

http://www.securityfocus.com/bid/80761Third Party Advisory · VDB Entry

→

https://bugzilla.redhat.com/show_bug.cgi?id=1291137Issue Tracking · Third Party Advisory

→

https://security.gentoo.org/glsa/201602-01Issue Tracking · Third Party Advisory

Quick Facts

CVE IDCVE-2015-7549

CVSS Score6.0 / 10

SeverityMEDIUM

WeaknessCWE-476

CISA KEVNo

Affected1 vendor(s)

PublishedOct 30, 2017

Related CVEs (CWE-476)

Recommended Actions

→Apply vendor patches immediately
→Monitor CVE-2015-7549 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.

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