Vulnerability · Published Aug 11, 2026 · Assigned by microsoft
CVE-2026-70337Microsoft PowerShell Remote Code Execution Vulnerability
High 8.8
In plain English
A high-severity security flaw in PowerShell 7.4 from Microsoft. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.9% (higher than 61% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS 3.1)8.8High
Exploit odds (30 days)0.9%top 38.9% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
Relative path traversal in Microsoft PowerShell Core allows an unauthorized attacker to execute code over a network.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine:v3.24 | powershell | 7.6.9-r0 | ALPINE-CVE-2026-70337 |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Microsoft | PowerShell 7.4 | 7.4.0 – before 7.4.19.0 |
| Microsoft | PowerShell 7.5 | 7.5.0 – before 7.5.10.0 |
| Microsoft | PowerShell 7.6 | 7.6.0 – before 7.6.5 |
Weakness: CWE-23 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C
References
- Microsoft PowerShell Remote Code Execution Vulnerability vendor-advisory, patch