CVE-2026-23656: CWE-345: Insufficient Verification of Data Authenticity in Microsoft Windows App Client for Windows Desktop
Insufficient verification of data authenticity in Windows App Installer allows an unauthorized attacker to perform spoofing over a network.
AI Analysis
Technical Summary
This vulnerability (CVE-2026-23656) affects Microsoft Windows App Client for Windows Desktop version 1.00 and is classified under CWE-345 (Insufficient Verification of Data Authenticity). The flaw allows an attacker to spoof data over a network due to inadequate verification mechanisms in the Windows App Installer. The CVSS v3.1 base score is 5.9, indicating medium severity, with network attack vector, high attack complexity, no privileges required, no user interaction, and impact limited to integrity. The vendor has released a patch to remediate this vulnerability.
Potential Impact
An attacker exploiting this vulnerability could perform spoofing attacks that compromise the integrity of data handled by the Windows App Installer. There is no impact on confidentiality or availability. No known exploits are reported in the wild at this time.
Mitigation Recommendations
A patch is available for this vulnerability. It is recommended to apply the official update from Microsoft for Windows App Client for Windows Desktop version 1.00 to remediate the issue. No additional mitigation steps are specified or required beyond applying the patch.
CVE-2026-23656: CWE-345: Insufficient Verification of Data Authenticity in Microsoft Windows App Client for Windows Desktop
Description
Insufficient verification of data authenticity in Windows App Installer allows an unauthorized attacker to perform spoofing over a network.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability (CVE-2026-23656) affects Microsoft Windows App Client for Windows Desktop version 1.00 and is classified under CWE-345 (Insufficient Verification of Data Authenticity). The flaw allows an attacker to spoof data over a network due to inadequate verification mechanisms in the Windows App Installer. The CVSS v3.1 base score is 5.9, indicating medium severity, with network attack vector, high attack complexity, no privileges required, no user interaction, and impact limited to integrity. The vendor has released a patch to remediate this vulnerability.
Potential Impact
An attacker exploiting this vulnerability could perform spoofing attacks that compromise the integrity of data handled by the Windows App Installer. There is no impact on confidentiality or availability. No known exploits are reported in the wild at this time.
Mitigation Recommendations
A patch is available for this vulnerability. It is recommended to apply the official update from Microsoft for Windows App Client for Windows Desktop version 1.00 to remediate the issue. No additional mitigation steps are specified or required beyond applying the patch.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- microsoft
- Date Reserved
- 2026-01-14T16:59:33.462Z
- Cvss Version
- 3.1
- State
- PUBLISHED
Threat ID: 69b05626ea502d3aa87d687f
Added to database: 3/10/2026, 5:34:30 PM
Last enriched: 4/18/2026, 2:09:30 PM
Last updated: 4/28/2026, 7:24:41 AM
Views: 201
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