PatchSiren

PatchSiren cyber security CVE debrief

CVE-2026-45592 Microsoft CVE debrief

CVE-2026-45592 is a HIGH severity vulnerability in Windows Internet (wininet.dll) that allows an authorized attacker to elevate privileges locally. The vulnerability is caused by an integer overflow or wraparound and has a CVSS score of 7.8.

Vendor
Microsoft
Product
Windows 10 Version 1607
CVSS
HIGH 7.8
CISA KEV
Not listed in stored evidence
Original CVE published
2026-06-09
Original CVE updated
2026-06-11
Advisory published
2026-06-09
Advisory updated
2026-06-11

Who should care

Administrators and users of Windows 10, Windows 11, and Windows Server systems should be aware of this vulnerability and take necessary actions to mitigate it.

Technical summary

The vulnerability is caused by an integer overflow or wraparound in Windows Internet (wininet.dll). This allows an authorized attacker to elevate privileges locally. The vulnerability has been assigned a CVSS score of 7.8 and a severity of HIGH.

Defensive priority

High

Recommended defensive actions

  • Apply patches from Microsoft as soon as possible.
  • Ensure that Windows systems are up-to-date with the latest security patches.
  • Monitor systems for suspicious activity.

Evidence notes

The vulnerability is documented in the CVE record and NVD detail pages.

Official resources

CVE-2026-45592 was published on 2026-06-09T17:17:27.070Z and modified on 2026-06-11T15:21:19.630Z.