CVE-2026-59124: CWE-502: Deserialization of Untrusted Data in Microsoft Windows App Client for Windows Desktop
Deserialization of untrusted data in Microsoft High Performance Computing (HPC) Pack allows an unauthorized attacker to execute code over a network.
AI Analysis
Technical Summary
This vulnerability (CWE-502) arises from improper handling of deserialization of untrusted data in the Microsoft HPC Pack component of Windows App Client for Windows Desktop. Exploitation could lead to remote code execution without requiring user interaction or privileges. The CVSS v3.1 base score is 9.8, indicating critical severity. Microsoft has published an official fix to remediate this issue.
Potential Impact
Successful exploitation allows an unauthenticated attacker to execute arbitrary code remotely on affected systems, potentially leading to full system compromise. Confidentiality, integrity, and availability impacts are all rated high.
Mitigation Recommendations
An official fix is available from Microsoft. Users and administrators should apply the provided patch from the Microsoft Security Response Center advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-59124 to remediate this vulnerability.
CVE-2026-59124: CWE-502: Deserialization of Untrusted Data in Microsoft Windows App Client for Windows Desktop
Description
Deserialization of untrusted data in Microsoft High Performance Computing (HPC) Pack allows an unauthorized attacker to execute code over a network.
CVSS v3.1
Score 9.8critical
Affected software
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability (CWE-502) arises from improper handling of deserialization of untrusted data in the Microsoft HPC Pack component of Windows App Client for Windows Desktop. Exploitation could lead to remote code execution without requiring user interaction or privileges. The CVSS v3.1 base score is 9.8, indicating critical severity. Microsoft has published an official fix to remediate this issue.
Potential Impact
Successful exploitation allows an unauthenticated attacker to execute arbitrary code remotely on affected systems, potentially leading to full system compromise. Confidentiality, integrity, and availability impacts are all rated high.
Mitigation Recommendations
An official fix is available from Microsoft. Users and administrators should apply the provided patch from the Microsoft Security Response Center advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-59124 to remediate this vulnerability.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- microsoft
- Date Reserved
- 2026-07-02T16:05:24.070Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- official-fix
- Vendor Advisory Urls
- [{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-59124","vendor":"Microsoft"}]
Threat ID: 6a7b57fdbf8831d539155743
Added to database: 08/11/2026, 17:12:29 UTC
Last enriched: 08/11/2026, 23:11:23 UTC
Last updated: 08/12/2026, 00:53:31 UTC
Views: 5
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