CVE-2019-1222
A remote code execution vulnerability exists in Remote Desktop Services – formerly known as Terminal Services – when an unauthenticated attacker connects to the target system using RDP and sends specially crafted requests.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (7.59%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
A remote code execution vulnerability exists in Remote Desktop Services – formerly known as Terminal Services – when an unauthenticated attacker connects to the target system using RDP and sends specially crafted requests. This vulnerability is pre-authentication and requires no user interaction. An attacker who successfully exploited this vulnerability could execute arbitrary code on the target system. An attacker could then install programs; view, change, or delete data; or create new accounts with full user rights. To exploit this vulnerability, an attacker would need to send a specially crafted request to the target systems Remote Desktop Service via RDP. The update addresses the vulnerability by correcting how Remote Desktop Services handles connection requests.
- CVSS 3.1
- 9.8 CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 7.59% probability · 95th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Affected
- microsoft/windows 10 · microsoft/windows server 2016 · microsoft/windows server 2019
- Source
- secure@microsoft.com
EPSS 7.6% since 27 October 2026; no change recorded yet. The dashed line is the ten per cent mark our analysts treat as “patch before the next change window”. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
References
- http://www.huawei.com/en/psirt/security-advisories/huawei-sa-20190819-01-windows-enThird Party Advisory
- https://cert-portal.siemens.com/productcert/pdf/ssa-187667.pdf
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2019-1222Patch, Vendor Advisory
- http://www.huawei.com/en/psirt/security-advisories/huawei-sa-20190819-01-windows-enThird Party Advisory
- https://cert-portal.siemens.com/productcert/pdf/ssa-187667.pdf
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2019-1222Patch, Vendor Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.