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High 7.8Published Aug 11, 2026
CVE-2026-70338Microsoft PowerShell Security Feature Bypass Vulnerability
Updated under an hour ago ()
Does this affect you?
It affects Microsoft PowerShell 7.4 and 3 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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Improper control of generation of code ('code injection') in Microsoft PowerShell allows an unauthorized attacker to bypass a security feature locally.
- CVSS
- 7.8 HIGH (v3.1, CNA)CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C
- Weakness (CWE)
- CWE-94
- 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
- Analyzed
- Record last updated
- Oct 8, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
Microsoft PowerShell 7.4 microsoft:powershell_7.4 (from the name) | from 7.4.0 before 7.4.19.0 | CNA record |
Microsoft PowerShell 7.5 microsoft:powershell_7.5 (from the name) | from 7.5.0 before 7.5.10.0 | CNA record |
Microsoft PowerShell 7.6 microsoft:powershell_7.6 (from the name) | from 7.6.0 before 7.6.5 | CNA record |
microsoft powershell microsoft:powershell | from 7.4 before 7.4.19.0; from 7.5 before 7.5.10.0; from 7.6 before 7.6.5 | NVD |
References
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-70338vendor-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.