CVE-2026-56181

HighCVSS 8.3/10Last modified Jul 22, 2026

Description

Origin validation error in Windows Network Address Translation (NAT) allows an unauthorized attacker to perform spoofing over an adjacent network.

Metrics

CVSS 3.1 8.3/10CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H

Weakness enumeration

Affected software

No affected versions have been published.

Timeline

Published
Jul 14, 2026
Last modified
Jul 22, 2026
NVD status
Analyzed

Related CVEs from 2026

CVE-2026-561827.8Integer overflow or wraparound in Windows NTFS allows an authorized attacker to elevate privileges locally.CVE-2026-561837.0Use after free in Windows MIDI Service Module allows an authorized attacker to elevate privileges locally.CVE-2026-561845.5Exposure of sensitive information to an unauthorized actor in Windows Win32K allows an authorized attacker to disclose information locally.CVE-2026-561856.5Improper authentication in Windows Admin Center allows an authorized attacker to disclose information over a network.CVE-2026-561866.5Out-of-bounds read in Windows Schannel allows an authorized attacker to disclose information over a network.CVE-2026-561877.8Use after free in Windows MIDI Service Module allows an authorized attacker to elevate privileges locally.CVE-2026-561888.1Concurrent execution using shared resource with improper synchronization ('race condition') in Windows Server Network driver allows an unautCVE-2026-561898.4Heap-based buffer overflow in Microsoft Windows Media Foundation allows an unauthorized attacker to execute code locally.CVE-2026-56195.3A flaw has been found in Braffolk mcp-summarization-functions up to 0.1.5. This impacts an unknown function of the file src/server/mcp-serveCVE-2026-561909.8Use of uninitialized resource in Windows RDP allows an unauthorized attacker to execute code over a network.CVE-2026-5619110.0Improper authentication in Microsoft Exchange Online allows an unauthorized attacker to perform tampering over a network.CVE-2026-561925.5Out-of-bounds read in Microsoft Office allows an unauthorized attacker to disclose information locally.