Powershell: .NET Remote Code Execution Vulnerability (CVE-2025-21171)
CVE-2025-21171 is a high-severity remote code execution vulnerability affecting multiple versions of PowerShell's .NET framework implementation. The flaw allows an attacker to execute arbitrary code remotely. Red Hat has issued security advisories providing updated .NET SDK and Runtime packages that address this vulnerability. Patch updates are available for affected versions, and users are advised to apply these updates promptly to mitigate the risk.
AI Analysis
Technical Summary
CVE-2025-21171 is a remote code execution vulnerability in the .NET framework used by PowerShell. It affects multiple version ranges including >=7.5.0 <7.5.2, >=8.0 <8.11, >=9.0 <9.6, and >=9.6 <9.9. The vulnerability is addressed by updates to .NET SDK 9.0.102 and Runtime 9.0.1, as detailed in Red Hat security advisories RHBA-2025:0305 and RHSA-2025:0382. These advisories cover fixes for this and related vulnerabilities, providing updated packages for Red Hat Enterprise Linux 8 and 9 variants. No known exploits in the wild have been reported at this time.
Potential Impact
Successful exploitation of this vulnerability could allow remote attackers to execute arbitrary code on affected systems, potentially leading to full system compromise. This elevates the risk for systems running vulnerable versions of PowerShell's .NET framework. However, no active exploitation has been observed in the wild according to current data.
Mitigation Recommendations
Official patches are available from Red Hat for affected .NET SDK and Runtime versions. Users should apply the updates to .NET SDK 9.0.102 and Runtime 9.0.1 as provided in Red Hat advisories RHBA-2025:0305 and RHSA-2025:0382. Following vendor guidance for patching is the recommended mitigation. No additional vendor-stated mitigations or workarounds are indicated.
Powershell: .NET Remote Code Execution Vulnerability (CVE-2025-21171)
Description
CVE-2025-21171 is a high-severity remote code execution vulnerability affecting multiple versions of PowerShell's .NET framework implementation. The flaw allows an attacker to execute arbitrary code remotely. Red Hat has issued security advisories providing updated .NET SDK and Runtime packages that address this vulnerability. Patch updates are available for affected versions, and users are advised to apply these updates promptly to mitigate the risk.
Affected software
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2025-21171 is a remote code execution vulnerability in the .NET framework used by PowerShell. It affects multiple version ranges including >=7.5.0 <7.5.2, >=8.0 <8.11, >=9.0 <9.6, and >=9.6 <9.9. The vulnerability is addressed by updates to .NET SDK 9.0.102 and Runtime 9.0.1, as detailed in Red Hat security advisories RHBA-2025:0305 and RHSA-2025:0382. These advisories cover fixes for this and related vulnerabilities, providing updated packages for Red Hat Enterprise Linux 8 and 9 variants. No known exploits in the wild have been reported at this time.
Potential Impact
Successful exploitation of this vulnerability could allow remote attackers to execute arbitrary code on affected systems, potentially leading to full system compromise. This elevates the risk for systems running vulnerable versions of PowerShell's .NET framework. However, no active exploitation has been observed in the wild according to current data.
Mitigation Recommendations
Official patches are available from Red Hat for affected .NET SDK and Runtime versions. Users should apply the updates to .NET SDK 9.0.102 and Runtime 9.0.1 as provided in Red Hat advisories RHBA-2025:0305 and RHSA-2025:0382. Following vendor guidance for patching is the recommended mitigation. No additional vendor-stated mitigations or workarounds are indicated.
Technical Details
- Gcve Source
- db.gcve.eu
- Csaf Category
- csaf_security_advisory
- Csaf Version
- 2.0
- Publisher
- Red Hat Product Security
- Advisory Id
- RHBA-2025:0305
- Cve Count
- 4
- Additional Cves
- ["CVE-2025-21172","CVE-2025-21173","CVE-2025-21176"]
Threat ID: 6a498a9f27e9c79719377053
Added to database: 07/04/2026, 22:35:11 UTC
Last enriched: 09/08/2026, 15:13:14 UTC
Last updated: 09/10/2026, 19:36:49 UTC
Views: 42
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