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CVE-2018-17962

26
FAUCET Score

CVE-2018-17962 describes a buffer overflow vulnerability in QEMU's pcnet_receive function (hw/net/pcnet.c) due to an incorrect integer data type, affecting various distributions including Canonical, Debian, Oracle, Red Hat, and SUSE. Rated 7.5 HIGH, this vulnerability can be exploited remotely with low complexity, leading to a denial of service. There is no evidence of active exploitation, public exploit code, or significant community discussion, suggesting a low current threat level.

Impacted Technologies

VendorProductVersion(s)CPE
2.1.0CPE matchmatch criteria
cpe:2.3:a:qemu:qemu:2.1.0:*:*:*:*:*:*:*
2.8.0CPE matchmatch criteria
cpe:2.3:a:qemu:qemu:2.8.0:*:*:*:*:*:*:*
2.12.0CPE matchmatch criteria
cpe:2.3:a:qemu:qemu:2.12.0:*:*:*:*:*:*:*
14.04CPE matchmatch criteria
cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:lts:*:*:*
16.04CPE matchmatch criteria
cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:*

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
4.50%
Probability of exploitation in next 30 days
EPSS Percentile
90.5%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0450 is in the 83rd 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 (1)

redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 6Fixed in: qemu-kvm-2:0.12.1.2-2.506.el6_10.5
View patch

Vendor Advisories (1)

redhatCVE-2018-17962Moderate

QEMU: pcnet: integer overflow leads to buffer overflow

Sep 26, 2018

References

access.redhat.com / errata/RHSA-2019:2892
lists.debian.org / debian-lts-announce/2018/11/msg00038.html
Third Party Advisory
lists.gnu.org / archive/html/qemu-devel/2018-09/msg03268.html
ExploitMailing ListThird Party Advisory
usn.ubuntu.com / 3826-1
Third Party Advisory
debian.org / security/2018/dsa-4338
Third Party Advisory
openwall.com / lists/oss-security/2018/10/08/1
Mailing ListThird Party Advisory
access.redhat.com / security/cve/cve-2018-17962
Third Party Advisory
linux.oracle.com / cve/CVE-2018-17962.html
Third Party Advisory
suse.com / security/cve/CVE-2018-17962
Third Party Advisory