CVE-2026-55011

Vendor

Microsoft, Adobe

Product

Microsoft Defender

CVSS

9.9

Exposure class

Endpoint security

Every item in the archive that references this CVE, highest rank first. Headlines open the publisher.

1. 34
   Research ZDI 14 Jul 2026

   The July 2026 Security Update Review

   Well folks. Here we are. The bug apocalypse has fully descended upon us. I’ll do my best to sort this out in some way meaningful, but this month’s release shows us the nay-sayers were right, and I’ve got to hand it to the…

   CVSS 9.9 CVE-2026-56155CVE-2026-56154CVE-2026-56164+57 more Microsoft Adobe
2. 19
   Advisory MSRC 14 Jul 2026

   CVE-2026-55011 Microsoft Defender Remote Code Execution Vulnerability

   Integer underflow (wrap or wraparound) in Microsoft Defender allows an unauthorized attacker to execute code locally.

   CVE-2026-55011 Microsoft