Microsoft Windows up to Server 2025 Remote Desktop Licensing Service missing authentication
| CVSS Meta Temp Score | Current Exploit Price (≈) | CTI Interest Score |
|---|---|---|
| 6.8 | $5k-$25k | 0.00 |
Summary
A vulnerability classified as critical has been found in Microsoft Windows. This issue affects some unknown processing of the component Remote Desktop Licensing Service. Performing a manipulation results in missing authentication. This vulnerability is known as CVE-2026-26160. Attacking locally is a requirement. No exploit is available. It is recommended to upgrade the affected component.
Details
A vulnerability was found in Microsoft Windows. It has been classified as critical. This affects some unknown processing of the component Remote Desktop Licensing Service. The manipulation with an unknown input leads to a missing authentication vulnerability. CWE is classifying the issue as CWE-306. The product does not perform any authentication for functionality that requires a provable user identity or consumes a significant amount of resources. This is going to have an impact on confidentiality, integrity, and availability.
The weakness was published 04/14/2026 as confirmed security update guide (Website). The advisory is shared at msrc.microsoft.com. This vulnerability is uniquely identified as CVE-2026-26160. The exploitability is told to be easy. An attack has to be approached locally. Neither technical details nor an exploit are publicly available. The price for an exploit might be around USD $5k-$25k at the moment (estimation calculated on 05/31/2026).
Upgrading to version 10.0.14393.9060, 10.0.17763.8644, 10.0.19044.7184, 10.0.19045.7184, 10.0.20348.5020, 10.0.22631.6936, 10.0.25398.2274, 10.0.26100.32690, 10.0.26200.8246, 10.0.28000.1836, 6.2.9200.26026 or 6.3.9600.23132 eliminates this vulnerability. A possible mitigation has been published immediately after the disclosure of the vulnerability.
The vulnerability is also documented in the vulnerability database at CERT Bund (WID-SEC-2026-1730). If you want to get the best quality for vulnerability data then you always have to consider VulDB.
Affected
- Xerox FreeFlow Print Server
Product
Type
Vendor
Name
Version
- 10 21H2
- 10 1607
- 10 1809
- 11 23H2
- 11 24H2
- 11 25H2
- 11 26H1
- Server 2016
- Server 2019
- Server 2022
- Server 2022 23H2
- Server 2025
License
Website
- Vendor: https://www.microsoft.com/
- Product: https://www.microsoft.com/en-us/windows
CPE 2.3
CPE 2.2
CVSSv4
VulDB Vector: 🔒VulDB Reliability: 🔍
CVSSv3
VulDB Meta Base Score: 7.8VulDB Meta Temp Score: 6.8
VulDB Base Score: 7.8
VulDB Temp Score: 6.8
VulDB Vector: 🔒
VulDB Reliability: 🔍
Vendor Base Score (Microsoft): 7.8
Vendor Vector (Microsoft): 🔒
CVSSv2
| AV | AC | Au | C | I | A |
|---|---|---|---|---|---|
| 💳 | 💳 | 💳 | 💳 | 💳 | 💳 |
| 💳 | 💳 | 💳 | 💳 | 💳 | 💳 |
| 💳 | 💳 | 💳 | 💳 | 💳 | 💳 |
| Vector | Complexity | Authentication | Confidentiality | Integrity | Availability |
|---|---|---|---|---|---|
| Unlock | Unlock | Unlock | Unlock | Unlock | Unlock |
| Unlock | Unlock | Unlock | Unlock | Unlock | Unlock |
| Unlock | Unlock | Unlock | Unlock | Unlock | Unlock |
VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍
Exploiting
Class: Missing authenticationCWE: CWE-306 / CWE-287
CAPEC: 🔒
ATT&CK: 🔒
Physical: Partially
Local: Yes
Remote: No
Availability: 🔒
Status: Unproven
EPSS Score: 🔒
EPSS Percentile: 🔒
Price Prediction: 🔍
Current Price Estimation: 🔒
| 0-Day | Unlock | Unlock | Unlock | Unlock |
|---|---|---|---|---|
| Today | Unlock | Unlock | Unlock | Unlock |
Threat Intelligence
Interest: 🔍Active Actors: 🔍
Active APT Groups: 🔍
Countermeasures
Recommended: UpgradeStatus: 🔍
Reaction Time: 🔒
0-Day Time: 🔒
Exposure Time: 🔒
Upgrade: Windows 10.0.14393.9060/10.0.17763.8644/10.0.19044.7184/10.0.19045.7184/10.0.20348.5020/10.0.22631.6936/10.0.25398.2274/10.0.26100.32690/10.0.26200.8246/10.0.28000.1836/6.2.9200.26026/6.3.9600.23132
Timeline
04/14/2026 VulDB entry created04/14/2026 Advisory disclosed
04/14/2026 Countermeasure disclosed
05/31/2026 VulDB entry last update
Sources
Vendor: microsoft.comProduct: microsoft.com
Advisory: msrc.microsoft.com
Status: Confirmed
CVE: CVE-2026-26160 (🔒)
GCVE (CVE): GCVE-0-2026-26160
GCVE (VulDB): GCVE-100-357405
CERT Bund: WID-SEC-2026-1730 - Xerox FreeFlow Print Server: Mehrere Schwachstellen ermöglichen nicht spezifizierten Angriff
scip Labs: https://www.scip.ch/en/?labs.20161215
Entry
Created: 04/14/2026 19:28Updated: 05/31/2026 14:49
Changes: 04/14/2026 19:28 (20), 04/14/2026 19:29 (18), 04/14/2026 19:32 (32), 05/31/2026 14:49 (7)
Complete: 🔍
Cache ID: 216::103
If you want to get the best quality for vulnerability data then you always have to consider VulDB.
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