CVE-2026-49181

high Microsoft
CVSS v3 Base Score
7.5
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C
EPSS Score
0.8%
Exploitation probability in 30 days
Top 49% most likely to be exploited
Attack Characteristics
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Confidentiality
High
Integrity
None
Availability
None
Published: July 14, 2026 (54 days ago)
Last Modified: July 16, 2026
Vendor: Microsoft
Source: MITRE

Description

Integer underflow (wrap or wraparound) in Windows DHCP Client allows an unauthorized attacker to elevate privileges over a network.

CWE

CWE-191

Affected Products

Microsoft Windows 10 Version 1607Microsoft Windows 10 Version 1809Microsoft Windows Server 2012Microsoft Windows Server 2012 (Server Core installation)Microsoft Windows Server 2012 R2Microsoft Windows Server 2012 R2 (Server Core installation)Microsoft Windows Server 2016Microsoft Windows Server 2016 (Server Core installation)Microsoft Windows Server 2019Microsoft Windows Server 2019 (Server Core installation)

References

🔗 msrc.microsoft.com