Quick answers
- Is CVE-2026-80074 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-80074 being exploited in the wild.
- How severe is CVE-2026-80074?
- High severity, with a CVSS score of 8.8, published 8 September 2026.
- Which products and versions are affected?
- Microsoft Remote Desktop Client.
- Is there a fix for CVE-2026-80074?
- 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-2026-80074 attacked?
- It is attacked over the network.
- Am I affected by CVE-2026-80074?
- Check whether you run Microsoft Remote Desktop Client. 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 the Remote Desktop Client that permits remote code execution. The vulnerability is reachable over the network without requiring prior authentication, allowing an unauthenticated attacker to send specially crafted network packets to trigger the overflow and execute arbitrary code with the privileges of the Remote Desktop Client process. The exact vulnerable component and root cause are not specified in the available advisory data, but the network vector and lack of authentication requirement indicate high exploitability.
Affected products
- Microsoft Remote Desktop Client
Timeline
- 2026-09-08: disclosed