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CVE-2018-10839

24
FAUCET Score

CVE-2018-10839 is an integer overflow vulnerability in Qemu emulator versions up to 3.0.0, specifically within its NE2000 NIC emulation support, affecting various Canonical and Debian Linux distributions and Qemu installations. This flaw can lead to a buffer overflow when receiving network packets. A malicious guest user could exploit this to crash the Qemu process, resulting in a Denial of Service (DoS) for the host system. Rated as MEDIUM severity (CVSS 6.5), it requires low privileges and no user interaction, with a network attack vector. There is currently no known active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage surrounding this vulnerability.

Impacted Technologies

VendorProductVersion(s)CPE
<= 3.0.0CPE matchmatch criteria
cpe:2.3:a:qemu:qemu:*:*:*:*:*:*:*:*
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:*:*:*
18.04CPE matchmatch criteria
cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:*
18.10CPE matchmatch criteria
cpe:2.3:o:canonical:ubuntu_linux:18.10:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

6.5MEDIUM

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

Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
LOW
Availability Impact
HIGH
Exploitability Score
2.2
Impact Score
4.2
CvssVersion
3.0

Exploit Intelligence

EPSS Score
3.17%
Probability of exploitation in next 30 days
EPSS Percentile
86.7%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0317 is in the 96th percentile among its peer group of 21,974 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 (10)

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
debianvendor investigatingvia nvd_reference
View patch
redhatno patchvia redhat_api
Product: Red Hat OpenStack Platform 12 (Pike)Fixed in: qemu-kvm-rhev
redhatno patchvia redhat_api
Product: Red Hat OpenStack Platform 14 (Rocky)Fixed in: qemu-kvm-rhev
redhatend of lifevia redhat_api
Product: Red Hat OpenStack Platform 10 (Newton)Fixed in: qemu-kvm-rhev
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 7Fixed in: qemu-kvm
redhatend of lifevia redhat_api
Product: Red Hat OpenStack Platform 13 (Queens)Fixed in: qemu-kvm-rhev
redhatend of lifevia redhat_api
Product: Red Hat OpenStack Platform 9 (Mitaka)Fixed in: qemu-kvm-rhev
redhatend of lifevia redhat_api
Product: Red Hat OpenStack Platform 8 (Liberty)Fixed in: qemu-kvm-rhev
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 7Fixed in: qemu-kvm-rhev

Vendor Advisories (1)

redhatCVE-2018-10839Moderate

QEMU: ne2000: integer overflow leads to buffer overflow issue

Sep 26, 2018

References

access.redhat.com / errata/RHSA-2019:2892
bugzilla.redhat.com / show_bug.cgi
Issue TrackingThird Party Advisory
lists.debian.org / debian-lts-announce/2018/11/msg00038.html
Third Party Advisory
lists.gnu.org / archive/html/qemu-devel/2018-09/msg03273.html
ExploitMailing ListThird Party Advisory
usn.ubuntu.com / 3826-1
PatchVendor Advisory
debian.org / security/2018/dsa-4338
Vendor Advisory
openwall.com / lists/oss-security/2018/10/08/1
Mailing ListThird Party Advisory