CVE-2026-96951: Microsoft Windows Command Injection Vulnerability
Vulnerability summary
CVE-2026-96951 is a high (CVSS 8.8) Command Injection vulnerability in Microsoft Windows. It is known to be exploited: CISA and ENISA list it, first on 25-09-2026. EPSS estimates a 1.51% chance of exploitation in the next 30 days, higher than 74% of scored vulnerabilities.
Timeline
- 25-09-2026Added to ENISA KEVAdded to the ENISA known exploited vulnerabilities catalog.
- 13-10-2026PublishedVulnerability first disclosed.
- 13-10-2026Added to CISA KEVMicrosoft Windows Command Injection Vulnerability
- 16-10-2026CISA remediation dueApply mitigations per vendor instructions.
- 16-10-2026Last modifiedVulnerability information updated.
Description
Improper neutralization of special elements used in a command ('command injection') in Windows Shell allows an unauthorized attacker to bypass a security feature over a network.
CVSS metrics
2 scores · 2 sources · 1 version- NVDNIST8.8HighCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
EPSS trend
Probability
1.51%
Chance of exploitation in the next 30 days
Percentile
74%
Versus all other CVEs
30-day change
Change unavailable
Change unavailable
Known exploited
Compare KEV catalogs- Added
- 13-10-2026
- Federal due date
- 16-10-2026
- Added
- 25-09-2026
CISA required action
Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA’s “Forensics Triage Requirements” (see URL in Notes). Follow applicable BOD 26-04 guidance for cloud services or discontinue use of the product if mitigations are unavailable. Stakeholders are responsible for evaluating each asset's internet exposure and ensuring adherence to BOD 26-04 patching guidelines. msrc.microsoft.com/update-guide/en-US/vulnerability/CVE-2026-96951 nvd.nist.gov/vuln/detail/CVE-2026-96951
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Microsoft31 products
- outlook< 20260925.100
- outlook_webna
- outlook.com≥ 1.0.0, < 20260925.100
- windows_10_1607< 10.0.14393.9612
- windows_10_1809< 10.0.17763.9376
1 vendor · 31 products
References
2 links- www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-96951Government ResourceUS Government Resource