[NEW] [medium] Microsoft PowerShell: Vulnerability enables code execution

mediumCVE-2026-50523

A local attacker can exploit a vulnerability in Microsoft PowerShell to execute arbitrary code.

CSIRTS triage

vendor: Microsoft product: PowerShell Code injection

What: A vulnerability in Microsoft PowerShell enables local arbitrary code execution.
Who is affected: Systems where untrusted users have local access or execution privilege are at risk.
Urgency: Medium severity; local execution requirement limits exposure but PowerShell is common on Windows systems.
Action: Apply Microsoft security patch for CVE-2026-50523.

AI-assisted analysis generated from the source advisory — verify against the original.

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Details

Source: CERT-Bund (BSI) Security Advisories (DE · national-cert · site)
Severity: medium
Published: 2026-08-17
Exploitation: Not in CISA KEV at last sync
Language: Machine-translated to English — verify against the original

Original advisory: https://wid.cert-bund.de/portal/wid/securityadvisory?name=WID-SEC-2026-2857

Exploitation outlook

EPSS (FIRST.org) estimates each CVE’s probability of exploitation in the next 30 days — here is the CSIRTS.com read on those numbers.

Low exploitation riskCVE-2026-505230.53% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 43% of all EPSS-scored CVEs.

Referenced CVEs

CVE	CSIRTS overview	External
CVE-2026-50523	coverage & exploitation status	NVD · CVE.org

Same CVEs, other sources

How other CERTs, PSIRTs and databases cover the vulnerabilities in this advisory.

Recent advisories for Microsoft PowerShell

A cluster of recent advisories against the same product widens the attack surface — attackers routinely chain freshly published CVEs on one product, so review these together.

highCVE-2026-50523: Improper neutralization of special elements used in a command ('command injection') in Microso…nvd · 2026-08-14
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highCVE-2026-70337: Relative path traversal in Microsoft PowerShell Core allows an unauthorized attacker to execut…nvd · 2026-08-11
highCVE-2026-59119: Incorrect default permissions in Microsoft PowerShell allows an authorized attacker to elevate…nvd · 2026-08-11
highCVE-2026-58612: Server-side request forgery (ssrf) in Microsoft PowerShell Core allows an unauthorized attacke…nvd · 2026-08-11
highCVE-2026-50523: Microsoft PowerShell Remote Code Execution Vulnerabilitymsrc · 2026-08-11