Path Traversal in Microsoft Powershell
CVE-2026-70337
Relative path traversal in Microsoft PowerShell Core allows an unauthorized attacker to execute code over a network.
Published · last modified .
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.
EPSS exploit prediction
EPSS: 0.009 (59.3th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 59th percentile — 59.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.008 · newest: 0.009 · change: +0.001
Affected products
- Microsoft Powershell
- 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)
References
- Microsoft PowerShell Remote Code Execution Vulnerability (vendor-advisory, patch, Vendor Advisory)
Frequently asked questions
- What is CVE-2026-70337?
- CVE-2026-70337 is a high-severity vulnerability in Microsoft Powershell, 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.