CVE-2026-50420 — MEDIUM (6.2)

Q: What is CVE-2026-50420?

CVE-2026-50420 is a vulnerability with a CVSS score of 6.2 (MEDIUM). Out-of-bounds read in Windows HTTP.sys allows an unauthorized attacker to disclose information locally.

Q: How severe is CVE-2026-50420?

CVE-2026-50420 has been rated MEDIUM with a CVSS base score of 6.2/10. Review the CVSS metrics above for detailed severity breakdown.

Q: Is there a patch for CVE-2026-50420?

Check the references section above for vendor advisories and patch information. Affected products include: Microsoft Windows 11 24H2, Microsoft Windows 11 25H2, Microsoft Windows 11 26H1, Microsoft Windows Server 2025.

Vulnerability Description

Out-of-bounds read in Windows HTTP.sys allows an unauthorized attacker to disclose information locally.

CVSS Score

6.2

MEDIUM

CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality

HIGH

Integrity

NONE

Availability

NONE

Affected Products

Vendor	Product	Versions
Microsoft	Windows 11 24H2	< 10.0.26100.8875
Microsoft	Windows 11 25H2	< 10.0.26200.8875
Microsoft	Windows 11 26H1	< 10.0.28000.2269
Microsoft	Windows Server 2025	< 10.0.26100.33158

Related Weaknesses (CWE)

CWE-125

References

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-50420PatchVendor Advisory

FAQ

What is CVE-2026-50420?

CVE-2026-50420 is a vulnerability with a CVSS score of 6.2 (MEDIUM). Out-of-bounds read in Windows HTTP.sys allows an unauthorized attacker to disclose information locally.

How severe is CVE-2026-50420?

CVE-2026-50420 has been rated MEDIUM with a CVSS base score of 6.2/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2026-50420?

Check the references section above for vendor advisories and patch information. Affected products include: Microsoft Windows 11 24H2, Microsoft Windows 11 25H2, Microsoft Windows 11 26H1, Microsoft Windows Server 2025.