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Fencer Vulns
high 7.8

CVE-2023-0664 json

A flaw was found in the QEMU Guest Agent service for Windows.

published 2023-03-29 3 y ago modified 2026-06-17 4 mo ago also EUVD-2023-12697

cvss
7.8
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.3%
EPSS 0.3% chance of exploitation in 30 days, percentile 23%
public exploits
0
none known

Summary

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.

Patch / fix

  • qemu qemu 8.0.0
  • virtio-win RHEL 9 1.9.33-0.el9_2

red hat advisories RHBA-2023:2451

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2023-0664 updated cvss 7.8

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

  • Red Hat Enterprise Linux 7 virtio-win
    affected: workaround, no fix planned “Out of support scope”
  • Red Hat Enterprise Linux 8 virtio-win
    affected: workaround, no fix planned “Will not fix”
  • Red Hat Enterprise Linux AppStream (v. 9) virtio-win 1.9.33-0.el9_2
    fixed: vendor fix RHBA-2023:2451

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

CISA SSVC

Exploitation
none
Automatable
no
Technical impact
total
Assessed
20 mo ago

Exploit prediction

0.31% chance of exploitation in the next 30 days, higher than 23% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CISA ADP 3.1 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
NVD 3.1 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CNA 3.1 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Affected products

  • n/a QEMU

Classification

Weakness
  • CWE-250 Execution with Unnecessary Privileges
  • CWE-269 Improper Privilege Management

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.