SOC status:Duty analyst on shift

UK Cyber Defence
VulnerabilityAnalyzed

CVE-2026-70337

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

HIGH 8.8EPSS 0.80%

Does this matter?

High impact if exploited, but EPSS currently rates exploitation as unlikely (0.80%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.

Description

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

CVSS 3.1
8.8 HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
EPSS
0.80% probability · 54th percentile
CISA KEV
Not listed
Weakness
CWE-23
Affected
microsoft/powershell
Source
secure@microsoft.com

Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.