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CVE-2023-0664

25
FAUCET Score

CVE-2023-0664 describes a high-severity privilege escalation vulnerability in the QEMU Guest Agent for Windows, affecting products from vendors like Fedora, Microsoft, QEMU, and Red Hat. A local unprivileged user can exploit a flaw in the installer's repair custom actions to gain elevated privileges on the system. The CVSS score of 7.8 indicates a high impact on confidentiality, integrity, and availability with low attack complexity. Currently, there is no evidence of active exploitation, publicly available exploit code, or significant community discussion surrounding this vulnerability.

Impacted Technologies

VendorProductVersion(s)CPE
< 8.0.0CPE matchmatch criteria
cpe:2.3:a:qemu:qemu:*:*:*:*:*:*:*:*
7.0CPE matchmatch criteria
cpe:2.3:o:redhat:enterprise_linux:7.0:*:*:*:*:*:*:*
8.0CPE matchmatch criteria
cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:*:*:*:*
9.0CPE matchmatch criteria
cpe:2.3:o:redhat:enterprise_linux:9.0:*:*:*:*:*:*:*
37CPE matchmatch criteria
cpe:2.3:o:fedoraproject:fedora:37:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

7.8HIGH

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

Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
1.8
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.31%
Probability of exploitation in next 30 days
EPSS Percentile
22.8%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0031 is in the 59th percentile among its peer group of 17,070 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.2 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (3)

redhatpatch availablevia nvd_reference
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 9Fixed in: virtio-win-0:1.9.33-0.el9_2
View patch
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 8Fixed in: virtio-win

Vendor Advisories (2)

microsoft2023-Mar/CVE-2023-0664

A flaw was found in the QEMU Guest Agent service for Windows. A local unprivileged user may be able to manipulate the QEMU Guest Agent's Windows installer via repair custom actions to elevate their privileges on the system.

Mar 14, 2023
redhatCVE-2023-0664Moderate

QEMU: local privilege escalation via the QEMU Guest Agent on Windows

Feb 20, 2023

References

bugzilla.redhat.com / show_bug.cgi
Issue TrackingPatchThird Party Advisory
gitlab.com / qemu-project/qemu/-/commit/07ce178a2b0768eb9e712bb5ad0cf6dc7fcf0158
Patch
gitlab.com / qemu-project/qemu/-/commit/88288c2a51faa7c795f053fc8b31b1c16ff804c5
Patch
lists.fedoraproject.org / archives/list/package-announce%40lists.fedoraproject.org/message/MURWGXDIF2WTDXV36T6HFJDBL632AO7R
lists.fedoraproject.org / archives/list/package-announce%40lists.fedoraproject.org/message/SEOC7SRJWLZSXCND2ADFW6C76ZMTZLE4
lists.nongnu.org / archive/html/qemu-devel/2023-03/msg01445.html
Mailing ListThird Party Advisory
security.netapp.com / advisory/ntap-20230517-0005