CVE-2026-54983: CWE-121: Stack-based Buffer Overflow in Microsoft Windows 10 Version 1607
Stack-based buffer overflow in Active Directory Federation Services (AD FS) allows an unauthorized attacker to deny service over a network.
AI Analysis
Technical Summary
This vulnerability is a stack-based buffer overflow (CWE-121) in Active Directory Federation Services (AD FS) on Windows 10 Version 1607 (build 10.0.14393.0). It enables an unauthenticated attacker to remotely cause a denial of service condition. The vulnerability has been assigned CVE-2026-54983 and carries a CVSS v3.1 base score of 7.5, indicating high severity. Microsoft has published an official fix for this issue, as detailed in their security update guide.
Potential Impact
Successful exploitation results in denial of service (DoS) without impacting confidentiality or integrity. The attacker can disrupt AD FS services remotely, potentially affecting authentication and federation services relying on AD FS.
Mitigation Recommendations
An official patch is available from Microsoft to remediate this vulnerability. Users should apply the security update provided in the Microsoft advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-54983 to mitigate the risk. No additional mitigations are specified by the vendor.
CVE-2026-54983: CWE-121: Stack-based Buffer Overflow in Microsoft Windows 10 Version 1607
Description
Stack-based buffer overflow in Active Directory Federation Services (AD FS) allows an unauthorized attacker to deny service over a network.
CVSS v3.1
Score 7.5high
Affected software
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability is a stack-based buffer overflow (CWE-121) in Active Directory Federation Services (AD FS) on Windows 10 Version 1607 (build 10.0.14393.0). It enables an unauthenticated attacker to remotely cause a denial of service condition. The vulnerability has been assigned CVE-2026-54983 and carries a CVSS v3.1 base score of 7.5, indicating high severity. Microsoft has published an official fix for this issue, as detailed in their security update guide.
Potential Impact
Successful exploitation results in denial of service (DoS) without impacting confidentiality or integrity. The attacker can disrupt AD FS services remotely, potentially affecting authentication and federation services relying on AD FS.
Mitigation Recommendations
An official patch is available from Microsoft to remediate this vulnerability. Users should apply the security update provided in the Microsoft advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-54983 to mitigate the risk. No additional mitigations are specified by the vendor.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- microsoft
- Date Reserved
- 2026-06-16T14:10:05.868Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- official-fix
- Vendor Advisory Urls
- [{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-54983","vendor":"Microsoft"}]
Threat ID: 6a566f7d68715ace43e6bb9a
Added to database: 07/14/2026, 17:18:53 UTC
Last enriched: 08/13/2026, 15:24:10 UTC
Last updated: 08/26/2026, 22:52:11 UTC
Views: 43
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