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CVE-2017-15268

26
FAUCET Score

CVE-2017-15268 describes a memory leak vulnerability in Qemu versions up to 2.10.0, specifically within the io/channel-websock.c component, which can be triggered by remote attackers through slow data-channel read operations. This vulnerability carries a high CVSS score of 7.5, indicating a severe impact, as it can lead to a denial of service (A:H) without requiring user interaction (UI:N) or authentication (PR:N), and has low attack complexity (AC:L) over a network (AV:N). Despite its severity, there is no evidence of active exploitation, no known public exploit code (Metasploit, Nuclei, ExploitDB), and minimal community discussion or media coverage, suggesting it is not widely targeted.

Impacted Technologies

VendorProductVersion(s)CPE
<= 2.10.0CPE matchmatch criteria
cpe:2.3:a:qemu:qemu:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

7.5HIGH

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
3.6
CvssVersion
3.0

Exploit Intelligence

EPSS Score
4.27%
Probability of exploitation in next 30 days
EPSS Percentile
90.1%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0427 is in the 82nd percentile among its peer group of 51,553 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

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

Remediation

Patch Available

Vendor Patches (9)

redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 7Fixed in: qemu-kvm-10:1.5.3-156.el7
View patch
redhatpatch availablevia redhat_api
Product: Red Hat OpenStack Platform 10.0 (Newton)Fixed in: qemu-kvm-rhev-10:2.10.0-21.el7
View patch
redhatpatch availablevia redhat_api
Product: Red Hat OpenStack Platform 11.0 (Ocata)Fixed in: qemu-kvm-rhev-10:2.10.0-21.el7
View patch
redhatpatch availablevia redhat_api
Product: Red Hat OpenStack Platform 12.0 (Pike)Fixed in: qemu-kvm-rhev-10:2.10.0-21.el7
View patch
redhatpatch availablevia redhat_api
Product: Red Hat OpenStack Platform 8.0 (Liberty)Fixed in: qemu-kvm-rhev-10:2.10.0-21.el7
View patch
redhatpatch availablevia redhat_api
Product: Red Hat OpenStack Platform 9.0 (Mitaka)Fixed in: qemu-kvm-rhev-10:2.10.0-21.el7
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Virtualization 4 for Red Hat Enterprise Linux 7Fixed in: qemu-kvm-rhev-10:2.10.0-21.el7
View patch
redhatno patchvia redhat_api
Product: Red Hat Enterprise Linux 7Fixed in: qemu-kvm-ma
redhatno patchvia redhat_api
Product: Red Hat Enterprise Linux 7Fixed in: qemu-kvm-rhev

Vendor Advisories (1)

redhatCVE-2017-15268Low

QEMU: I/O: potential memory exhaustion via websock connection to VNC

Sep 22, 2017

References

access.redhat.com / errata/RHSA-2018:0816
access.redhat.com / errata/RHSA-2018:1104
bugs.launchpad.net / qemu/+bug/1718964
ExploitIssue TrackingPatchThird Party Advisory
lists.gnu.org / archive/html/qemu-devel/2017-10/msg02278.html
Mailing ListPatchThird Party Advisory
usn.ubuntu.com / 3575-1
debian.org / security/2018/dsa-4213
securityfocus.com / bid/101277
Third Party AdvisoryVDB Entry