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CVE-2018-19489

18
FAUCET Score

CVE-2018-19489 is a denial-of-service vulnerability affecting QEMU, specifically within the v9fs_wstat function in hw/9pfs/9p.c, due to a race condition during file renaming. This flaw allows a guest OS user to crash the QEMU instance. With a CVSS score of 4.7 (Medium), it requires local access and high attack complexity, but does not involve user interaction, leading to a high impact on availability. There is currently no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
<= 3.0.0CPE matchmatch criteria
cpe:2.3:a:qemu:qemu:*:*:*:*:*:*:*:*
3.1.0CPE matchmatch criteria
cpe:2.3:a:qemu:qemu:3.1.0:rc0:*:*:*:*:*:*
3.1.0CPE matchmatch criteria
cpe:2.3:a:qemu:qemu:3.1.0:rc1:*:*:*:*:*:*
3.1.0CPE matchmatch criteria
cpe:2.3:a:qemu:qemu:3.1.0:rc2:*:*:*:*:*:*
8.0CPE matchmatch criteria
cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

4.7MEDIUM

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

Attack Vector
LOCAL
Attack Complexity
HIGH
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
1.0
Impact Score
3.6
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.40%
Probability of exploitation in next 30 days
EPSS Percentile
33.0%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0040 is in the 82nd percentile among its peer group of 1,297 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 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 0.4 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Vendor Advisories (1)

redhatCVE-2018-19489Low

QEMU: 9pfs: crash due to race condition in renaming files

Nov 22, 2018

References

lists.opensuse.org / opensuse-security-announce/2019-03/msg00042.html
Mailing ListThird Party Advisory
exchange.xforce.ibmcloud.com / vulnerabilities/153326
Third Party AdvisoryVDB Entry
git.qemu.org
lists.debian.org / debian-lts-announce/2019/01/msg00023.html
Mailing ListThird Party Advisory
lists.fedoraproject.org / archives/list/package-announce%40lists.fedoraproject.org/message/CGCFIFSIWUREEQQOZDZFBYKWZHXCWBZN
lists.gnu.org / archive/html/qemu-devel/2018-11/msg04489.html
Mailing ListPatchVendor Advisory
seclists.org / bugtraq/2019/May/76
Mailing ListThird Party Advisory
security-tracker.debian.org / tracker/CVE-2018-19489
Third Party Advisory
usn.ubuntu.com / 3923-1
Third Party Advisory
debian.org / security/2019/dsa-4454
Third Party Advisory
openwall.com / lists/oss-security/2018/11/26/1
Mailing ListPatchThird Party Advisory
securityfocus.com / bid/106007
Third Party AdvisoryVDB Entry