CVE & CISA-KEV Catalog

CVE-2015-6855

HIGHEPSS 88th pctl

7.5

CVSS v3

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.

How to fix

Remediation Available

qemuDebian

Fixed in:1:2.4+dfsg-2CVE-2015-6855

Fixed in:1:2.4+dfsg-2CVE-2015-6855

Fixed in:1:2.4+dfsg-2CVE-2015-6855

Fixed in:1:2.4+dfsg-2CVE-2015-6855

qemuUbuntu

Fixed in:2.0.0+dfsg-2ubuntu1.19USN-2745-1

qemu-systemUbuntu

Fixed in:2.0.0+dfsg-2ubuntu1.19USN-2745-1

qemu-system-aarch64Ubuntu

Fixed in:2.0.0+dfsg-2ubuntu1.19USN-2745-1

qemu-system-armUbuntu

Fixed in:2.0.0+dfsg-2ubuntu1.19USN-2745-1

qemu-system-mipsUbuntu

Fixed in:2.0.0+dfsg-2ubuntu1.19USN-2745-1

qemu-system-miscUbuntu

Fixed in:2.0.0+dfsg-2ubuntu1.19USN-2745-1

qemu-system-ppcUbuntu

Fixed in:2.0.0+dfsg-2ubuntu1.19USN-2745-1

qemu-system-sparcUbuntu

Fixed in:2.0.0+dfsg-2ubuntu1.19USN-2745-1

qemu-system-x86Ubuntu

Fixed in:2.0.0+dfsg-2ubuntu1.19USN-2745-1

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredNone

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

Exploit Intelligence

3.50%probability of exploitation in 30 days

88thpercentile

Elevated risk: more likely to be exploited than 88% of all known CVEs.

References

Third-Party Advisory16

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-05-06.