CVE-2026-66318: Microsoft Edge (Chromium-based) Information Disclosure Vulnerability
Origin validation error in Microsoft Edge (Chromium-based) allows an unauthorized attacker to disclose information over a network.
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Security advisories from 24 sources — CISA, CERT-EU, NCSC-UK, BSI, CERT-FR, NCSC-NL, JPCERT/CC, JVN, HKCERT, the Canadian Cyber Centre, NVD, GitHub, Microsoft, Cisco, Fortinet, Palo Alto Networks and more — normalized, translated to English and flagged against the CISA KEV catalog. One global feed for CSIRTs, SOCs and defenders.
Origin validation error in Microsoft Edge (Chromium-based) allows an unauthorized attacker to disclose information over a network.
Improper link resolution before file access ('link following') in Microsoft Edge (Chromium-based) allows an unauthorized attacker to disclose information over a network.
Use after free in Microsoft Edge (Chromium-based) allows an unauthorized attacker to execute code over a network.
Heap-based buffer overflow in Windows Media allows an authorized attacker to execute code locally.
Stack-based buffer overflow in Active Directory Federation Services allows an unauthorized attacker to deny service over a network.
Concurrent execution using shared resource with improper synchronization ('race condition') in Windows USB Driver allows an authorized attacker to elevate privileges locally.
This CVE was assigned by Chrome. Microsoft Edge (Chromium-based) ingests Chromium, which addresses this vulnerability. Please see Google Chrome Releases for more information.
Concurrent execution using shared resource with improper synchronization ('race condition') in Windows Media allows an authorized attacker to elevate privileges over a network.
Use of uninitialized resource in Windows RDP allows an unauthorized attacker to disclose information over a network.
This CVE was assigned by Chrome. Microsoft Edge (Chromium-based) ingests Chromium, which addresses this vulnerability. Please see Google Chrome Releases for more information.
Use after free in Windows Runtime allows an authorized attacker to elevate privileges locally.
Improper link resolution before file access ('link following') in .NET allows an authorized attacker to perform tampering locally.
Improper neutralization of input during web page generation ('cross-site scripting') in Microsoft Office SharePoint allows an authorized attacker to perform spoofing over a network.
Allocation of resources without limits or throttling in .NET allows an unauthorized attacker to deny service over a network.
Exposure of private personal information to an unauthorized actor in Microsoft Defender allows an authorized attacker to disclose information locally.
Use after free in Windows Remote Access Connection Manager allows an authorized attacker to elevate privileges over a network.
Heap-based buffer overflow in Windows NTFS allows an unauthorized attacker to elevate privileges with a physical attack.
Out-of-bounds read in Windows Active Directory allows an authorized attacker to deny service over a network.
This CVE was assigned by Chrome. Microsoft Edge (Chromium-based) ingests Chromium, which addresses this vulnerability. Please see Google Chrome Releases for more information.
Use after free in Windows Clipboard Server allows an authorized attacker to elevate privileges locally.
Improper encoding or escaping of output in .NET allows an authorized attacker to perform spoofing over a network.
Improper control of generation of code ('code injection') in .NET Framework allows an unauthorized attacker to elevate privileges locally.
Out-of-bounds read in Microsoft Office Word allows an unauthorized attacker to disclose information locally.
Use after free in Microsoft Office Word allows an unauthorized attacker to execute code locally.
Integer overflow or wraparound in Microsoft Office Word allows an unauthorized attacker to execute code locally.
Untrusted pointer dereference in Microsoft Office Excel allows an unauthorized attacker to execute code locally.
Missing authorization in Microsoft Office SharePoint allows an authorized attacker to elevate privileges over a network.
Heap-based buffer overflow in Windows DHCP Server allows an unauthorized attacker to execute code over a network.