CVE-2026-77907: CWE-122: Heap-based Buffer Overflow in Microsoft Microsoft Visual Studio 2026 version 18.9
Description
Heap-based buffer overflow in Visual Studio allows an unauthorized attacker to execute code over a network.
CVSS v3.1
Score 8.8high
Affected software
Microsoft
Microsoft Visual Studio 2026 version 18.9
pkg:nuget/microsoft.visualstudioRun on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability (CVE-2026-77907) is a heap-based buffer overflow in Microsoft Visual Studio 2026 version 18.9 that enables remote code execution by an unauthorized attacker. The flaw is exploitable over a network without requiring privileges but requires user interaction. The vulnerability impacts confidentiality, integrity, and availability with high severity. Microsoft has published an official fix to remediate this issue.
Potential Impact
Successful exploitation of this vulnerability could allow an attacker to execute arbitrary code remotely, potentially leading to full compromise of the affected system. The vulnerability affects confidentiality, integrity, and availability of the system.
Mitigation Recommendations
An official fix is available from Microsoft. Users and administrators should apply the security update provided by Microsoft as soon as possible to remediate this vulnerability. Refer to the Microsoft Security Response Center advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-77907 for detailed patch information and guidance.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- microsoft
- Date Reserved
- 2026-08-21T17:26:55.613Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- official-fix
- Vendor Advisory Urls
- [{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-77907","vendor":"Microsoft"}]
Threat ID: 6aa0455eacd9273b49faa0e7
Added to database: 09/08/2026, 17:26:54 UTC
Last enriched: 10/14/2026, 21:59:20 UTC
Last updated: 10/23/2026, 01:15:27 UTC
Views: 33
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