Technology · Microsoft
Microsoft Windows (Schannel) vulnerabilities
Updated . Rebuilt every hour.
Junglewise Threat Intelligence has tracked 3 vulnerabilities in Microsoft Windows (Schannel): 0 in the last 7 days and 3 in the last 90 days, 1 of them critical and 0 exploited in the wild. The most recent, CVE-2026-85818, was published on 13 October 2026. 1 vulnerability in the last four weeks, up from none in the four before. 1 critical against 0.
- Last 7 days
- 0
- Last 90 days
- 3
- Critical, all time
- 1
- Exploited in the wild
- 0
About Microsoft Windows (Schannel)
Windows Secure Channel (Schannel) cryptographic protocol provider for TLS/SSL communications.
Latest Microsoft Windows (Schannel) vulnerabilities
- CVE-2026-85818: Windows Schannel cryptographic signature verification bypasscriticalCVSS 9EPSS 0.4%
- CVE-2026-72940: Microsoft Windows Schannel heap buffer overflowhighCVSS 8.8EPSS 0.8%
- CVE-2026-70575: Microsoft Windows Schannel null pointer dereferencemediumCVSS 5.3EPSS 0.9%
Most severe Microsoft Windows (Schannel) vulnerabilities
Exploited in the wild first, then by severity and CVSS score.
- CVE-2026-85818: Windows Schannel cryptographic signature verification bypasscriticalCVSS 9EPSS 0.4%
- CVE-2026-72940: Microsoft Windows Schannel heap buffer overflowhighCVSS 8.8EPSS 0.8%
- CVE-2026-70575: Microsoft Windows Schannel null pointer dereferencemediumCVSS 5.3EPSS 0.9%
Vulnerabilities per week
1 vulnerability in the last four weeks, up from none in the four before. 1 critical against 0. The last 13 weeks, by the week each vulnerability was published.
| Week of | Bar | Vulns | Critical |
|---|---|---|---|
| 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 | |
| 28 Sep 2026 | 0 | 0 | |
| 5 Oct 2026 | 0 | 0 | |
| 12 Oct 2026 | 1 | 1 | |
| 19 Oct 2026 | 0 | 0 | |
| 26 Oct 2026 | 0 | 0 | |
| 2 Nov 2026 | 0 | 0 | |
| 9 Nov 2026 | 0 | 0 |
Embed a badge
A live badge for a README, a status page or an internal wiki: how many Microsoft Windows (Schannel) vulnerabilities were published in the last 7 days and how many of them are critical, refreshed hourly.
[](https://junglewise.ai/threats/technologies/windows-schannel)<a href="https://junglewise.ai/threats/technologies/windows-schannel"><img src="https://junglewise.ai/threats/technologies/windows-schannel/badge.svg" alt="Microsoft Windows (Schannel) vulnerabilities" /></a>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-schannel.json, and this page as text at https://junglewise.ai/threats/technologies/windows-schannel.md, 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 (Schannel) vulnerabilities", https://junglewise.ai/threats/technologies/windows-schannel, 13 November 2026.