CVE-2026-56190
CWE-908Published: July 14, 2026· Updated: Jul 15, 2026
Official Description
Use of uninitialized resource in Windows RDP allows an unauthorized attacker to execute code over a network.
Risk Analysis
This critical vulnerability in Windows RDP involves the use of an uninitialized resource, enabling an unauthorized attacker to execute code remotely. With a CVSS score of 9.8, this flaw poses a significant risk of complete system compromise.
No public exploit is currently known for this vulnerability. The remote exploitability (AV:N) and lack of required privileges (PR:N) suggest it could be exploited without prior access.
Install the latest security updates for Windows RDP to mitigate this issue. Consider restricting RDP access to trusted networks and users, and implement multi-factor authentication.
Technical Analysis
CVE-2026-56190 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.
The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.
A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 9.8.
CVSS v3.1 Vector Breakdown
Exploit & PoC Resources
All References (1)
Quick Facts
Related CVEs (CWE-908)
Recommended Actions
- →Apply vendor patches immediately
- →Monitor CVE-2026-56190 in threat intel feeds
- →Review IDS/IPS signatures for exploitation attempts