Technology · Microsoft
Microsoft Windows SMB Client vulnerabilities
Updated . Rebuilt every hour.
Junglewise Threat Intelligence has tracked 4 vulnerabilities in Microsoft Windows SMB Client: 0 in the last 7 days and 3 in the last 90 days, 0 of them critical and 0 exploited in the wild. The most recent, CVE-2026-72936, was published on 8 September 2026.
- Last 7 days
- 0
- Last 90 days
- 3
- Critical, all time
- 0
- Exploited in the wild
- 0
About Microsoft Windows SMB Client
A component of the Windows operating system that enables communication with servers using the Server Message Block protocol.
Latest Microsoft Windows SMB Client vulnerabilities
- CVE-2026-72936: Microsoft Windows SMB Client use-after-free remote code executionhighCVSS 8.1EPSS 0.7%
- CVE-2026-69618: Microsoft Windows SMB Client out-of-bounds readmediumCVSS 5.5EPSS 0.4%
- CVE-2026-65794: Microsoft Windows SMB Client buffer over-readmediumCVSS 6.5EPSS 0.9%
- CVE-2026-40410: Microsoft Windows SMB Client use after free privilege escalationhighCVSS 7
Most severe Microsoft Windows SMB Client vulnerabilities
Exploited in the wild first, then by severity and CVSS score.
- CVE-2026-72936: Microsoft Windows SMB Client use-after-free remote code executionhighCVSS 8.1EPSS 0.7%
- CVE-2026-40410: Microsoft Windows SMB Client use after free privilege escalationhighCVSS 7
- CVE-2026-65794: Microsoft Windows SMB Client buffer over-readmediumCVSS 6.5EPSS 0.9%
- CVE-2026-69618: Microsoft Windows SMB Client out-of-bounds readmediumCVSS 5.5EPSS 0.4%
Vulnerabilities per week
The last 13 weeks, by the week each vulnerability was published.
| Week of | Bar | Vulns | Critical |
|---|---|---|---|
| 29 Jun 2026 | 0 | 0 | |
| 6 Jul 2026 | 0 | 0 | |
| 13 Jul 2026 | 0 | 0 | |
| 20 Jul 2026 | 0 | 0 | |
| 27 Jul 2026 | 0 | 0 | |
| 3 Aug 2026 | 0 | 0 | |
| 10 Aug 2026 | 1 | 0 | |
| 17 Aug 2026 | 0 | 0 | |
| 24 Aug 2026 | 0 | 0 | |
| 31 Aug 2026 | 0 | 0 | |
| 7 Sep 2026 | 2 | 0 | |
| 14 Sep 2026 | 0 | 0 | |
| 21 Sep 2026 | 0 | 0 |
How this is built
Junglewise Threat Intelligence collects vulnerabilities from NVD, GitHub Security Advisories, OSV, the CISA Known Exploited Vulnerabilities catalog, FIRST EPSS and vendor advisories, and matches each one to the technologies and vendors it affects. Dates are the date a vulnerability was published, in UTC.
The pages are rebuilt from the database every hour. Frozen weekly and monthly reports never change once published, so they can be cited.
Use this data
The same data is at https://junglewise.ai/threats/technologies/windows-smb-client.json, for scripts and language models. It is free to reuse under CC BY 4.0 with a link back to this page.
Cite as: Junglewise Threat Intelligence, "Microsoft Windows SMB Client vulnerabilities", https://junglewise.ai/threats/technologies/windows-smb-client, 26 September 2026.