CVE-2022-26809
CriticalExploitedPublic exploitRemote Procedure Call Runtime Remote Code Execution Vulnerability
Published May 11, 2022 · Updated Jan 2, 2025 · Also known as TR-22-0316
Key Facts
Patch immediately- CVE-2022-26809 is a critical-severity vulnerability (CVSS 9.8 v3.1) affecting Windows 10 (Microsoft), Windows 11 (Microsoft), Windows 7 (Microsoft) and 22 more products.
- It is exploited in the wild, listed in Industry KEV feed since Apr 14, 2022 and is known to be used in ransomware campaigns. Public exploit code is available.
- EPSS estimates a 91% probability of exploitation in the next 30 days.
- Fixed versions are available, including Windows 10 Version 1507 10.0.10240.19265, Windows 10 Version 1607 10.0.14393.5066, Windows 10 Version 1809 10.0.17763.2803.
- Brandefense priority: patch immediately, because it is listed as exploited in the wild.
CVSS v3.1
9.8
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS (30-day exploit likelihood)
91%
Higher than 99.8% of all scored CVEs
Exploited in the wild
Yes
1 catalog listing, used by ransomware
Public exploit code
Available
Proof-of-concept or weaponized module
Get the full CVE-2022-26809 brief as a PDF
Every affected product and fixed release, exploitation status and a first 24 hours response checklist, emailed within minutes.
Description
Remote Procedure Call Runtime Remote Code Execution Vulnerability
Known-Exploited Catalog Listings
| Catalog | Added | Remediation due | Ransomware use |
|---|---|---|---|
| Industry KEV feed | Apr 14, 2022 | n/a | Known |
Required action: Apply remediations or mitigations per vendor instructions or discontinue use of the product if remediation or mitigations are unavailable.
Affected Products
46 affected entries in total| Product | Affected versions | Fixed in |
|---|---|---|
| Windows 10Microsoft | 1607, 1809, 1909, 20h2, 21h1, 21h2 | n/a |
| Windows 11Microsoft | See advisory | n/a |
| Windows 7Microsoft | >= 6.1.0 | 6.1.7601.25924 |
| Windows 8.1Microsoft | >= 6.3.0 | 6.3.9600.20337 |
| Windows Rt 8.1Microsoft | See advisory | n/a |
Patched Releases
Windows 10 Version 1507
10.0.10240.19265
Windows 10 Version 1607
10.0.14393.5066
Windows 10 Version 1809
10.0.17763.2803
Windows 10 Version 1909
10.0.18363.2212
Windows 10 Version 20H2
10.0.19042.1645
Windows 10 Version 21H1
10.0.19043.1645
Windows 10 Version 21H2
10.0.19044.1645
Windows 11 version 21H2
10.0.22000.613
Windows 7
6.1.7601.25924
Windows 7 Service Pack 1
6.1.7601.25924
Windows 8.1
6.3.9600.20337
Windows Server 2008 Service Pack 2
6.0.6003.21446
Windows Server 2008 R2 Service Pack 1
6.1.7601.25924
Windows Server 2008 R2 Service Pack 1 (Server Core installation)
6.1.7601.25924
Windows Server 2008 Service Pack 2 (Server Core installation)
6.0.6003.21446
Windows Server 2012
6.2.9200.23679
Windows Server 2012 (Server Core installation)
6.2.9200.23679
Windows Server 2012 R2
6.3.9600.20337
Windows Server 2012 R2 (Server Core installation)
6.3.9600.20337
Windows Server 2016
10.0.14393.5066
Windows Server 2016 (Server Core installation)
10.0.14393.5066
Windows Server 2019
10.0.17763.2803
Windows Server 2019 (Server Core installation)
10.0.17763.2803
Windows Server 2022
10.0.20348.643
Windows Server version 20H2
10.0.19042.1645
Timeline
Added to Industry KEV feed
Apr 14, 2022
Publicly disclosed
May 11, 2022
Last updated
Jan 2, 2025
References
- advisoryhttp://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2022-26810
- advisoryhttp://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2022-26827
- advisoryhttps://cybersafenv.org/2022/04/12/microsoft-releases-april-2022-security-updates/
- advisoryhttps://docs.microsoft.com/en-us/deployedge/microsoft-edge-relnotes-security
- advisoryhttps://docs.microsoft.com/en-us/windows/win32/secauthn/lsa-authentication
FAQ
Common Questions.
Remote Procedure Call Runtime Remote Code Execution Vulnerability
Affected: Windows 10 (Microsoft) versions 1607, 1809, 1909, 20h2, 21h1, 21h2; Windows 11 (Microsoft); Windows 7 (Microsoft) versions >= 6.1.0, among others. The full list is in the CVE brief.
It is exploited in the wild, listed in Industry KEV feed since Apr 14, 2022 and is known to be used in ransomware campaigns.
No, it is not currently listed in the CISA Known Exploited Vulnerabilities catalog.
Public exploit code is available.
Fixed versions are available, including Windows 10 Version 1507 10.0.10240.19265, Windows 10 Version 1607 10.0.14393.5066, Windows 10 Version 1809 10.0.17763.2803.
Brandefense priority: patch immediately, because it is listed as exploited in the wild.
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