ZDI-26-332: QEMU calc_image_hostmem Integer Overflow Local Privilege Escalation Vulnerability

Published Jun 9, 2026
·
Updated

This vulnerability allows local attackers to escalate privileges on affected installations of QEMU. An attacker must first obtain the ability to execute low-privileged code on the target guest system in order to exploit this vulnerability. The ZDI has assigned a CVSS rating of 8.8. The following CVEs are assigned: CVE-2026-3886.

Affected Software

1 affected component
Qemu Qemu

Event History

Jun 9, 2026
Advisory Published
via ZDI·05:00 AM
Data Sourced
via ZDI·05:00 AM
Description
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Frequently Asked Questions

1

What is the severity of ZDI-26-332?

ZDI-26-332 has a CVSS rating of 8.8, indicating a high severity level.

2

How do I fix ZDI-26-332?

To fix ZDI-26-332, update to the latest version of QEMU that addresses this vulnerability.

3

What type of vulnerability is ZDI-26-332?

ZDI-26-332 is an integer overflow local privilege escalation vulnerability in QEMU.

4

Who can exploit ZDI-26-332?

Local attackers who have the ability to execute low-privileged code on the target guest system can exploit ZDI-26-332.

5

What software versions are affected by ZDI-26-332?

ZDI-26-332 affects certain installations of QEMU, specifically those versions prior to the security update.

Contact

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