CVE-2026-119952: Windows Schannel Remote Code Execution Vulnerability
Advisory generated from the CVE record, CISA, Exploit Observer and VEDAS: what it is, whether it is exploited, who is affected, and how to fix and detect it.
Generated by VEDAS. Scores as of 2026-11-11 15:49 UTC. Rebuilt every few hours from cve-scores, CISA KEV and vedas-signatures. How this works and its limits.
What it is
Observable timing discrepancy in Windows Schannel allows an unauthorized attacker to execute code over a network.
Description quoted from the CVE record (assigned by microsoft, published 2026-11-10).
Weakness: CWE-208: Observable Timing Discrepancy
How it can be exploited
Exploitable over the network with high attack complexity needing no privileges and no user interaction. Impact: confidentiality high, integrity high, availability high. CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C
CISA assessment (SSVC): CISA has no evidence of exploitation. Automatable: no. Technical impact: total.
Public exploit evidence (Exploit Observer)
Exploit Observer has no public exploit code naming this CVE. Check Exploit Observer for anything new.
Live scores
- EPSS
- 0.009
low predicted chance of attack - VEDAS
- 0.045
little exploit evidence - On CISA KEV
- Not listed
- Detection rule
- No public rule yet
Who is affected
| Product | Affected | Not affected |
|---|---|---|
| Microsoft Windows 10 Version 1607 | from 10.0.14393.0 before 10.0.14393.9688 | Not stated |
| Microsoft Windows 10 Version 1809 | from 10.0.17763.0 before 10.0.17763.9487 | Not stated |
| Microsoft Windows 10 Version 21H2 | from 10.0.19044.0 before 10.0.19044.7846 | Not stated |
| Microsoft Windows 10 Version 22H2 | from 10.0.19045.0 before 10.0.19045.7846 | Not stated |
| Microsoft Windows 11 version 23H2 | from 10.0.22631.0 before 10.0.22631.7711 | Not stated |
| Microsoft Windows 11 Version 23H2 | from 10.0.22631.0 before 10.0.22631.7711 | Not stated |
| Microsoft Windows 11 Version 24H2 | from 10.0.26100.0 before 10.0.26100.9974 | Not stated |
| Microsoft Windows 11 Version 25H2 | from 10.0.26200.0 before 10.0.26200.9974 | Not stated |
| Microsoft Windows 11 version 26H1 | from 10.0.28000.0 before 10.0.28000.3501 | Not stated |
| Microsoft Windows 11 Version 26H2 | from 10.0.26300.0 before 10.0.26300.9974 | Not stated |
| Microsoft Windows Server 2016 | from 10.0.14393.0 before 10.0.14393.9688 | Not stated |
| Microsoft Windows Server 2016 (Server Core installation) | from 10.0.14393.0 before 10.0.14393.9688 | Not stated |
| Microsoft Windows Server 2019 | from 10.0.17763.0 before 10.0.17763.9487 | Not stated |
| Microsoft Windows Server 2019 (Server Core installation) | from 10.0.17763.0 before 10.0.17763.9487 | Not stated |
| Microsoft Windows Server 2022 | from 10.0.20348.0 before 10.0.20348.5870 | Not stated |
| Microsoft Windows Server 2025 | from 10.0.26100.0 before 10.0.26100.33822 | Not stated |
| Microsoft Windows Server 2025 (Server Core installation) | from 10.0.26100.0 before 10.0.26100.33822 | Not stated |
Version ranges exactly as the CVE record states them. “Before X” means X is the first fixed version.
How to fix it
Fixed versions stated in the CVE record: 10.0.14393.9688, 10.0.17763.9487, 10.0.19044.7846, 10.0.19045.7846, 10.0.22631.7711, 10.0.26100.9974, 10.0.26200.9974, 10.0.28000.3501, 10.0.26300.9974, 10.0.20348.5870, 10.0.26100.33822.
Vendor guidance:
- Windows Schannel Remote Code Execution Vulnerability (vendor-advisory, patch)
How to detect it
There is no open VEDAS detection rule for this bug yet. It is listed on the detection gaps page if CISA has confirmed attacks.
Advisories on this CVE
References
Vendor advisories and patches
- Windows Schannel Remote Code Execution Vulnerability (vendor-advisory, patch)
Other databases
Where this comes from
This advisory is generated automatically by VEDAS from: CVE.org record, cve-scores (EPSS and VEDAS), Exploit Observer. Text in quotes is reproduced from the source; everything else is a fixed template filled with source fields. Nothing here is written by a language model. Check the vendor advisory before acting, and read how VEDAS and Exploit Observer work, and their limits.
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