CVE-2026-62757: CWE-347: Improper Verification of Cryptographic Signature in Microsoft Windows 10 Version 1607
Improper verification of cryptographic signature in Windows Schannel allows an unauthorized attacker to bypass a security feature over a network.
AI Analysis
Technical Summary
This vulnerability (CVE-2026-62757) affects the Schannel security package in Microsoft Windows 10 Version 1607 (build 10.0.14393.0). It involves improper verification of cryptographic signatures, which can enable an attacker to bypass security features remotely. The CVSS 3.1 base score is 5.3, reflecting a network attack vector with high attack complexity and requiring no privileges but user interaction. Microsoft has released an official fix for this vulnerability.
Potential Impact
An attacker exploiting this vulnerability could bypass security features in the Schannel component remotely, potentially leading to unauthorized actions that impact the integrity of the system. There is no confidentiality or availability impact reported. No known exploits are currently in the wild.
Mitigation Recommendations
An official fix is available from Microsoft. Users and administrators should apply the security update provided by Microsoft for Windows 10 Version 1607 (build 10.0.14393.0) as detailed in the Microsoft Security Response Center advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-62757.
CVE-2026-62757: CWE-347: Improper Verification of Cryptographic Signature in Microsoft Windows 10 Version 1607
Description
Improper verification of cryptographic signature in Windows Schannel allows an unauthorized attacker to bypass a security feature over a network.
CVSS v3.1
Score 5.3medium
Affected software
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability (CVE-2026-62757) affects the Schannel security package in Microsoft Windows 10 Version 1607 (build 10.0.14393.0). It involves improper verification of cryptographic signatures, which can enable an attacker to bypass security features remotely. The CVSS 3.1 base score is 5.3, reflecting a network attack vector with high attack complexity and requiring no privileges but user interaction. Microsoft has released an official fix for this vulnerability.
Potential Impact
An attacker exploiting this vulnerability could bypass security features in the Schannel component remotely, potentially leading to unauthorized actions that impact the integrity of the system. There is no confidentiality or availability impact reported. No known exploits are currently in the wild.
Mitigation Recommendations
An official fix is available from Microsoft. Users and administrators should apply the security update provided by Microsoft for Windows 10 Version 1607 (build 10.0.14393.0) as detailed in the Microsoft Security Response Center advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-62757.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- microsoft
- Date Reserved
- 2026-07-14T21:01:21.824Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- official-fix
- Vendor Advisory Urls
- [{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-62757","vendor":"Microsoft"}]
Threat ID: 6a7b5813bf8831d539155bfe
Added to database: 08/11/2026, 17:12:51 UTC
Last enriched: 08/11/2026, 21:56:59 UTC
Last updated: 08/12/2026, 03:41:13 UTC
Views: 3
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