CVE-2026-50523
CVE-2026-50523 is a high-severity vulnerability in Microsoft Powershell with a CVSS 3.x base score of 7.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-77.
Key facts
- Severity: High (CVSS 3.x base score 7.8)
- EPSS exploit prediction: 0% (12th percentile)
- Actively exploited: Not listed in CISA KEV
- Weakness: CWE-77
- Affected product: Microsoft Powershell
- Published:
- Last modified:
Description
Improper neutralization of special elements used in a command ('command injection') in Microsoft PowerShell allows an authorized attacker to execute code locally.
Frequently asked questions
- What is CVE-2026-50523?
- Improper neutralization of special elements used in a command ('command injection') in Microsoft PowerShell allows an authorized attacker to execute code locally.
- How severe is CVE-2026-50523?
- CVE-2026-50523 has a CVSS 3.x base score of 7.8, rated high severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
- Is CVE-2026-50523 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (12th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2026-50523?
- CVE-2026-50523 affects Microsoft Powershell. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2026-50523?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
- When was CVE-2026-50523 published?
- CVE-2026-50523 was published on 2026-08-14 and last updated on 2026-08-18.
References
Affected products (1)
- cpe:2.3:a:microsoft:powershell:*:*:*:*:*:*:*:*
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