Remote Desktop Gateway Service
CVE-2025-26677 — Windows Remote Desktop Gateway (RD Gateway) Denial of Service Vulnerability
Executive Summary
Uncontrolled resource consumption in Remote Desktop Gateway Service allows an unauthorized attacker to deny service over a network.
Overview
7.5
CVSS HIGH
Important
MS Severity
Not Exploited
MS Exploit Status
Less Likely
MS Exploit Likelihood
CVSS Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C
ATTACK VECTOR
Network
ATTACK COMPLEXITY
Low
PRIVILEGES REQUIRED
None
USER INTERACTION
None
SCOPE
Unchanged
CONFIDENTIALITY
None
INTEGRITY
None
AVAILABILITY
High
EXPLOIT CODE MATURITY
Unproven
REMEDIATION LEVEL
Official Fix
REPORT CONFIDENCE
Confirmed
Temporal Score: 6.5
EPSS Score
0.01662
probability of exploitation in the next 30 days
0.746 percentile - updated 2026-08-14
View on FIRST.org
Affected Products
6 affected products
| Product | KB Article | Severity | Impact | Restart Required |
|---|---|---|---|---|
| Windows Server 2016 | 5058383 (Security Update) |
Important | Denial of Service | Yes |
| Windows Server 2016 (Server Core installation) | 5058383 (Security Update) |
Important | Denial of Service | Yes |
| Windows Server 2019 | 5058392 (Security Update) |
Important | Denial of Service | Yes |
| Windows Server 2019 (Server Core installation) | 5058392 (Security Update) |
Important | Denial of Service | Yes |
| Windows Server 2022 5058385 (Security Update) 5058500 (SecurityHotpatchUpdate) Important Denial of Service 5055526 Base: 7.5 Temporal: 6.5 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C 10.0.20348.3692 10.0.20348.3630 Yes None Windows Server 2022 (Server Core installation) | 5058385 (Security Update) |
Important | Denial of Service | Yes |
| Windows Server 2022, 23H2 Edition (Server Core installation) | 5058384 (Security Update) |
Important | Denial of Service | Yes |
Patches
4 patches
| Article | Type | Restart |
|---|---|---|
5058383 |
Security Update | Yes |
5058392 |
Security Update | Yes |
5058385 |
Security Update | Yes |
5058384 |
Security Update | Yes |
Exploits & PoC
No public exploit or PoC has been linked for this CVE yet. When available, references are sourced from public repositories and may be unverified or non-functional — review carefully before use.
Detection Rules
No public Sigma or Nuclei detection rule has been mapped to this CVE yet. Coverage is concentrated on exploited / high-profile vulnerabilities; check SigmaHQ for updates.
Acknowledgments
ʌ!ɔ⊥ojv with Kunlun Lab
k0shl
References
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