User Impersonation Affecting akka.remote package, versions [1.2.0,1.5.52)
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-DOTNET-AKKAREMOTE-13350886
- published7 Oct 2025
- disclosed6 Oct 2025
- creditAaron Stannard
Introduced: 6 Oct 2025
NewCVE-2025-61778 (opens in a new tab)How to fix?
Upgrade Akka.Remote to version 1.5.52 or higher.
Overview
Akka.Remote is a .NET port of the popular Akka project from the Scala / Java community.
Affected versions of this package are vulnerable to User Impersonation due to improper implementation of certificate-based authentication in the akka.remote.dot-netty.tcp transport. An attacker can gain unauthorized access to a secured cluster by connecting without presenting a valid client certificate, allowing communication with trusted nodes.
Workaround
This vulnerability can be mitigated by avoiding public exposure of the application.