CVE-2025-27090
Description
Sliver is an open source cross-platform adversary emulation/red team framework, it can be used by organizations of all sizes to perform security testing. The reverse port forwarding in sliver teamserver allows the implant to open a reverse tunnel on the sliver teamserver without verifying if the operator instructed the implant to do so. The only impact that has been shown is the exposure of the server's IP address to a third party. This issue has been addressed in version 1.5.43 and all users are advised to upgrade. There are no known workarounds for this vulnerability.
How to fix
- bishopfox sliver1.5.43 or later
- github.com/bishopfox/sliver1.5.43 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| bishopfox sliver | 1.5.26 ≤ v < 1.5.43 | 1.5.43 |
| github.com/bishopfox/sliverGo | 1.5.26 ≤ v < 1.5.43 | 1.5.43 |
Check your version
Choose the product and enter the version you run to see whether it falls in the affected range.
Attack Surface Management
See the assets tied to your domains, the technologies they run and known vulnerabilities in one list.