What is CVE-2026-70337?

CVE-2026-70337 is a high-severity vulnerability in Microsoft Powershell 7.4, classified under Relative Path Traversal. CVSS score: 8.8/10. Published 2026-08-11.

How severe is CVE-2026-70337?

High severity. CVSS v3 base score is 8.8 out of 10.

Path Traversal in Microsoft Powershell 7.4

CVE-2026-70337

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

CVSS v3 metric

CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.

Affected products

Microsoft Powershell 7.4 — versions 7.4.0
Microsoft Powershell 7.5 — versions 7.5.0
Microsoft Powershell 7.6 — versions 7.6.0

Weakness classification (CWE)

CWE-23 — Relative Path Traversal

References

Microsoft PowerShell Remote Code Execution Vulnerability (vendor-advisory, patch)

Frequently asked questions

What is CVE-2026-70337?: CVE-2026-70337 is a high-severity vulnerability in Microsoft Powershell 7.4, classified under Relative Path Traversal. CVSS score: 8.8/10. Published 2026-08-11.
How severe is CVE-2026-70337?: High severity. CVSS v3 base score is 8.8 out of 10.