Quick answers
- Is CVE-2026-105552 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-105552 being exploited in the wild.
- How severe is CVE-2026-105552?
- Medium severity, with a CVSS score of 5.5, published 10 November 2026.
- Which products and versions are affected?
- Microsoft Windows kernel.
- Is there a fix for CVE-2026-105552?
- 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-2026-105552 attacked?
- It is attacked with local access.
- Am I affected by CVE-2026-105552?
- Check whether you run Microsoft Windows Kernel. 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
An information disclosure vulnerability exists in the Windows kernel's object initialization routine, where sensitive data in uninitialized memory may be leaked to authenticated local processes. The vulnerability requires an authenticated attacker with the ability to execute code locally; exploitation does not require privilege escalation or special system access. Microsoft's fix corrects the kernel's memory initialization process to ensure sensitive data is properly cleared before use.
Affected products
- Microsoft Windows kernel
Timeline
- 2026-11-10: disclosed