Vulnerability · Published Jan 13, 2026 · Assigned by microsoft
CVE-2026-21219Inbox COM Objects (Global Memory) Remote Code Execution Vulnerability
High 7.0
In plain English
A high-severity use-after-free in Windows SDK from Microsoft. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 33% of all known vulnerabilities).
Severity (CVSS 3.1)7.0High
Exploit odds (30 days)0.4%top 67.4% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
Use after free in Inbox COM Objects allows an unauthorized attacker to execute code locally.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Microsoft | Windows SDK | 26100 – before 10.0.26100.7463 |
Weakness: CWE-416 · Vector: 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
References
- Inbox COM Objects (Global Memory) Remote Code Execution Vulnerability vendor-advisory, patch