CVE-2026-96251

HIGH

Published Oct 13, 2026 Modified Oct 20, 2026 CWE-807

Description

Reliance on untrusted inputs in a security decision in Microsoft PowerShell allows an unauthorized attacker to execute code over a network.

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CVSS v3.1 Score

8.8

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

EPSS — Exploit Prediction

0.0069

Probability of exploitation

0.53%

Percentile rank

EPSS estimates the probability that this vulnerability will be exploited in the wild within the next 30 days. A higher score means more likely to be exploited.

Weakness Type (CWE)

CWE-807 CWE-807

Affected Products

Vendor	Product	Versions
microsoft	powershell	7.4 — 7.4.21
microsoft	powershell	7.5 — 7.5.12
microsoft	powershell	7.6 — 7.6.7

References

Advisories & Patches

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-96251

Frequently Asked Questions

What is CVE-2026-96251? +

Reliance on untrusted inputs in a security decision in Microsoft PowerShell allows an unauthorized attacker to execute code over a network. It has a CVSS v3.1 base score of 8.8 (HIGH).

How severe is CVE-2026-96251? +

CVE-2026-96251 has a CVSS v3.1 score of 8.8 out of 10, rated HIGH. This is a high-severity vulnerability that should be prioritized for patching. The EPSS score is 0.0069, placing it in the 1th percentile for exploitation probability.

What products are affected by CVE-2026-96251? +

CVE-2026-96251 affects products from microsoft, specifically: powershell. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2026-96251? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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