Quick answers
- Is CVE-2026-42906 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-42906 being exploited in the wild.
- How severe is CVE-2026-42906?
- Medium severity, with a CVSS score of 5.5, published 9 June 2026.
- Which products and versions are affected?
- Microsoft Windows Shell.
- Is there a fix for CVE-2026-42906?
- 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-2026-42906 attacked?
- It is attacked with local access, in an operating system.
- Am I affected by CVE-2026-42906?
- Check whether you run Microsoft Windows Shell. 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 Microsoft Windows Shell component due to improper handling of sensitive data, classified as CWE-200. An attacker with local access and low privileges can exploit this flaw to disclose information to an unauthorized actor. The attack vector is local, requiring the attacker to have prior authenticated access to the target system, but no user interaction is required. Successful exploitation results in high confidentiality impact but does not directly affect system integrity or availability. Microsoft has released security updates to address this issue.
Affected products
- Microsoft Windows Shell
Timeline
- 2026-06-09: disclosed
- 2026-06-09: advisory