Quick answers
- Is CVE-2026-34332 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-34332 being exploited in the wild.
- How severe is CVE-2026-34332?
- High severity, with a CVSS score of 8, published 12 May 2026.
- Which products and versions are affected?
- Microsoft Windows Kernel-Mode Drivers.
- Is there a fix for CVE-2026-34332?
- No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
- How is CVE-2026-34332 attacked?
- It is attacked over the network, in an operating system.
- Am I affected by CVE-2026-34332?
- Check whether you run Microsoft Windows Kernel-Mode Drivers. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.
Technical details
A use-after-free (CWE-416) vulnerability exists within Microsoft Windows Kernel-Mode Drivers. The flaw is triggered when the system attempts to use memory that has already been deallocated, which an attacker can leverage to gain remote code execution. The attack vector is network-based and requires low-level authentication (PR:L) and minimal user interaction (UI:R). Successful exploitation allows for a full compromise of confidentiality, integrity, and availability (C:H/I:H/A:H) at the kernel level. Microsoft has released security updates to address this issue.
Affected products
- Microsoft Windows Kernel-Mode Drivers
Timeline
- 2026-05-12: disclosed
- 2026-05-12: advisory: Microsoft released the security update guide for this vulnerability.