CVE-2026-56645

high Microsoft
CVSS v3 Base Score
8.8
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C
EPSS Score
0.6%
Exploitation probability in 30 days
Top 57% most likely to be exploited
Attack Characteristics
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
Required
Confidentiality
High
Integrity
High
Availability
High
Published: July 3, 2026 (6 days ago)
Last Modified: July 7, 2026
Vendor: Microsoft
Source: MITRE

Description

Heap-based buffer overflow in Microsoft Edge (Chromium-based) allows an unauthorized attacker to execute code over a network.

CWE

CWE-122

Affected Products

Microsoft Microsoft Edge (Chromium-based)

References

🔗 msrc.microsoft.com