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CVE-2015-8504

20
FAUCET Score

CVE-2015-8504 describes a denial-of-service vulnerability in Qemu's VNC display driver, affecting Debian and Qemu installations. An authenticated remote attacker can trigger an arithmetic exception and application crash by sending crafted SetPixelFormat messages. With a CVSS score of 6.5 (Medium), this vulnerability has a low attack complexity and high impact on availability, requiring only network access and low privileges. There is no evidence of active exploitation, public exploit code, or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
<= 2.4.1CPE matchmatch criteria
cpe:2.3:a:qemu:qemu:*:*:*:*:*:*:*:*
2.5.0CPE matchmatch criteria
cpe:2.3:a:qemu:qemu:2.5.0:rc0:*:*:*:*:*:*
2.5.0CPE matchmatch criteria
cpe:2.3:a:qemu:qemu:2.5.0:rc1:*:*:*:*:*:*
2.5.0CPE matchmatch criteria
cpe:2.3:a:qemu:qemu:2.5.0:rc2:*:*:*:*:*:*
7.0CPE matchmatch criteria
cpe:2.3:o:debian:debian_linux:7.0:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

6.5MEDIUM

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
2.8
Impact Score
3.6
CvssVersion
3.1

Exploit Intelligence

EPSS Score
3.12%
Probability of exploitation in next 30 days
EPSS Percentile
86.5%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0312 is in the 95th percentile among its peer group of 21,977 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 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 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (5)

redhatpatch availablevia nvd_reference
View patch
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 7Fixed in: qemu-kvm
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux OpenStack Platform 5.0 (Icehouse) for RHEL 7Fixed in: qemu-kvm-rhev
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux OpenStack Platform 6 (Juno)Fixed in: qemu-kvm-rhev
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux OpenStack Platform 7 (Kilo)Fixed in: qemu-kvm-rhev

Vendor Advisories (1)

redhatCVE-2015-8504Moderate

Qemu: ui: vnc: avoid floating point exception

Dec 3, 2015

References

git.qemu-project.org
bugzilla.redhat.com / show_bug.cgi
Issue TrackingPatchThird Party Advisory
security.gentoo.org / glsa/201602-01
Third Party Advisory
debian.org / security/2016/dsa-3469
Third Party Advisory
debian.org / security/2016/dsa-3470
Third Party Advisory
debian.org / security/2016/dsa-3471
Third Party Advisory
openwall.com / lists/oss-security/2015/12/08/7
Mailing ListThird Party Advisory
securityfocus.com / bid/78708
Third Party AdvisoryVDB Entry