Quick answers
- Is CVE-2026-77906 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-77906 being exploited in the wild.
- How severe is CVE-2026-77906?
- High severity, with a CVSS score of 8.8, published 8 September 2026.
- Which products and versions are affected?
- Microsoft Visual Studio.
- Is there a fix for CVE-2026-77906?
- No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
- How is CVE-2026-77906 attacked?
- It is attacked over the network.
- Am I affected by CVE-2026-77906?
- Check whether you run Microsoft Visual Studio or Microsoft Visual Studio 2026. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.
Technical details
A heap-based buffer overflow exists in Microsoft Visual Studio that can be triggered over the network. The vulnerability allows an unauthenticated attacker to send a specially crafted payload that overflows a heap buffer, corrupting memory and enabling execution of arbitrary code with the privileges of the user running Visual Studio. No authentication or user interaction is required to trigger the vulnerability; the attack vector is network-based. The CVSS v3.1 score of 8.8 reflects the high severity due to the combination of network accessibility, lack of authentication requirements, and potential for complete system compromise.
Affected products
- Microsoft Visual Studio
Timeline
- 2026-09-08: disclosed