CVE-2026-21219: high-severity vulnerability in Microsoft Windows SDK
Inbox COM Objects (Global Memory) Remote Code Execution Vulnerability
Published · Updated
E-mail alert when it lands in KEV, gets a public PoC or its score goes up.
21Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 7epss 0.4%
Use after free in Inbox COM Objects allows an unauthorized attacker to execute code locally.
CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C
Affected products
Microsoft · Windows SDKRelated CVEs — Microsoft Windows SDK
In the same product, most dangerous first.