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Medium 6.5Published Oct 13, 2026
CVE-2026-96303Microsoft PowerShell Security Feature Bypass Vulnerability
Updated under an hour ago ()
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It affects Microsoft PowerShell 7.4 and 2 other products. Add what you run to find out whether that includes you.
No exploitation reported and no EPSS estimate yet.
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Improperly implemented security check for standard in Microsoft PowerShell allows an unauthorized attacker to bypass a security feature over a network.
- CVSS
- 6.5 MEDIUM (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N/E:U/RL:O/RC:C
- Weakness (CWE)
- CWE-358
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- microsoft
- NVD analysis
- Awaiting Analysis
- Record last updated
- Oct 16, 2026
- First seen by InfoSec Signals
- Oct 13, 2026
Affected products
Microsoft PowerShell 7.4 microsoft:powershell_7.4 (from the name) | from 7.4.0 before 7.4.21 | CNA record |
Microsoft PowerShell 7.5 microsoft:powershell_7.5 (from the name) | from 7.5.0 before 7.5.12 | CNA record |
Microsoft PowerShell 7.6 microsoft:powershell_7.6 (from the name) | from 7.6.0 before 7.6.7 | CNA record |
References
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-96303vendor-advisory, patch
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.