HOME VULNERABILITIESCVE-2015-6855

HIGH

CVE-2015-6855

CWE-369Published: November 6, 2015· Updated: Jun 17, 2026

7.5

CVSS v3.1

Official Description

hw/ide/core.c in QEMU does not properly restrict the commands accepted by an ATAPI device, which allows guest users to cause a denial of service or possibly have unspecified other impact via certain IDE commands, as demonstrated by a WIN_READ_NATIVE_MAX command to an empty drive, which triggers a divide-by-zero error and instance crash.

Technical Analysis

CVE-2015-6855 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in availability disruption (denial of service), with a CVSS base score of 7.5.

CVSS v3.1 Vector Breakdown

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges Req.None

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityNone

IntegrityNone

AvailabilityHigh

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

Affected Vendors & Products

arista1 product(s)

eos

Canonical1 product(s)

ubuntu linux

Debian1 product(s)

debian linux

Fedora1 product(s)

fedora

qemu1 product(s)

qemu

SUSE2 product(s)

linux enterprise desktoplinux enterprise server

Source: NVD CPE · 13 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/2015-October/168602.html

ADVISORYhttp://lists.fedoraproject.org/pipermail/package-announce/2015-October/169036.html

ADVISORYhttp://lists.fedoraproject.org/pipermail/package-announce/2015-October/169039.html

ADVISORYhttp://lists.fedoraproject.org/pipermail/package-announce/2015-October/169327.html

ADVISORYhttp://lists.fedoraproject.org/pipermail/package-announce/2015-October/169341.html

ADVISORYhttp://lists.fedoraproject.org/pipermail/package-announce/2015-September/167369.html

ADVISORYhttp://lists.opensuse.org/opensuse-security-announce/2015-10/msg00019.html

ADVISORYhttp://www.debian.org/security/2015/dsa-3361

ADVISORYhttp://www.debian.org/security/2015/dsa-3362

ADVISORYhttp://www.openwall.com/lists/oss-security/2015/09/10/1

ADVISORYhttp://www.openwall.com/lists/oss-security/2015/09/10/2

ADVISORYhttp://www.securityfocus.com/bid/76691

ADVISORYhttp://www.ubuntu.com/usn/USN-2745-1

ADVISORYhttps://lists.gnu.org/archive/html/qemu-devel/2015-09/msg02479.html

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

ADVISORYhttps://www.arista.com/en/support/advisories-notices/security-advisories/1188-security-advisory-14

ADVISORYhttp://lists.fedoraproject.org/pipermail/package-announce/2015-October/168602.html

ADVISORYhttp://lists.fedoraproject.org/pipermail/package-announce/2015-October/169036.html

ADVISORYhttp://lists.fedoraproject.org/pipermail/package-announce/2015-October/169039.html

ADVISORYhttp://lists.fedoraproject.org/pipermail/package-announce/2015-October/169327.html

ADVISORYhttp://lists.fedoraproject.org/pipermail/package-announce/2015-October/169341.html

ADVISORYhttp://lists.fedoraproject.org/pipermail/package-announce/2015-September/167369.html

ADVISORYhttp://lists.opensuse.org/opensuse-security-announce/2015-10/msg00019.html

ADVISORYhttp://www.debian.org/security/2015/dsa-3361

ADVISORYhttp://www.debian.org/security/2015/dsa-3362

ADVISORYhttp://www.openwall.com/lists/oss-security/2015/09/10/1

ADVISORYhttp://www.openwall.com/lists/oss-security/2015/09/10/2

ADVISORYhttp://www.securityfocus.com/bid/76691

ADVISORYhttp://www.ubuntu.com/usn/USN-2745-1

ADVISORYhttps://lists.gnu.org/archive/html/qemu-devel/2015-09/msg02479.html

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

ADVISORYhttps://www.arista.com/en/support/advisories-notices/security-advisories/1188-security-advisory-14

All References (32)

→

http://lists.fedoraproject.org/pipermail/package-announce/2015-October/168602.htmlThird Party Advisory

→

http://lists.fedoraproject.org/pipermail/package-announce/2015-October/169036.htmlThird Party Advisory

→

http://lists.fedoraproject.org/pipermail/package-announce/2015-October/169039.htmlThird Party Advisory

→

http://lists.fedoraproject.org/pipermail/package-announce/2015-October/169327.htmlThird Party Advisory

→

http://lists.fedoraproject.org/pipermail/package-announce/2015-October/169341.htmlThird Party Advisory

→

http://lists.fedoraproject.org/pipermail/package-announce/2015-September/167369.htmlThird Party Advisory

→

http://lists.opensuse.org/opensuse-security-announce/2015-10/msg00019.htmlMailing List · Third Party Advisory

→

http://www.debian.org/security/2015/dsa-3361Third Party Advisory

→

http://www.debian.org/security/2015/dsa-3362Third Party Advisory

→

http://www.openwall.com/lists/oss-security/2015/09/10/1Mailing List · Third Party Advisory

→

http://www.openwall.com/lists/oss-security/2015/09/10/2Mailing List · Third Party Advisory

→

http://www.securityfocus.com/bid/76691Third Party Advisory · VDB Entry

→

http://www.ubuntu.com/usn/USN-2745-1Third Party Advisory

→

https://lists.gnu.org/archive/html/qemu-devel/2015-09/msg02479.htmlMailing List · Third Party Advisory

→

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

Quick Facts

CVE IDCVE-2015-6855

CVSS Score7.5 / 10

SeverityHIGH

WeaknessCWE-369

CISA KEVNo

Affected6 vendor(s)

PublishedNov 6, 2015

Related CVEs (CWE-369)

Recommended Actions

→Apply vendor patches immediately
→Monitor CVE-2015-6855 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.

← All Vulnerabilities·Search for CVE-2015-6855·NVD