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CVE-2026-70337ImportantRevised 28 Aug

Microsoft PowerShell Remote Code Execution Vulnerability

MSRC advisory NVD CVE.org

Assessment

Relative path traversal in Microsoft PowerShell Core allows an unauthorized attacker to execute code over a network.

Severity
Important
CVSS base score
8.8CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C
Impact
Remote Code Execution
EPSS, next 30 days
0.9%Higher than 59.3% of scored CVEs · FIRST model run 26 Sep 2026 · about EPSS
Exploitability
Exploitation Less Likely
Publicly disclosed
No
Customer action
Required: apply the update
Component
Microsoft PowerShell Core
Weakness
CWE-23: Relative Path Traversal
Issued by
Microsoft
Published
11 Aug 2026 · August 2026
Last revised
28 Aug 2026Acknowledgement Updated

Updates that fix it

0 KBs

No KB listed

MSRC lists no downloadable update, which usually means a service-side fix or a release-notes update. Check the MSRC advisory.

Affected products

Developer Tools
3 affected products
  • PowerShell 7.4
  • PowerShell 7.5
  • PowerShell 7.6
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