BishopFox Sliver Authenticated Remote Code Execution
Key facts
- Attack vector
- Network
- Privileges required
- High
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Code execution
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- Fixed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA and GitHub. Impact type from CWE-78.
Summary
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.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- Poc
- Automatable
- No
- Technical impact
- Total
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| BishopFox | sliver | = 1.6.0-dev | — | No fix listed | CNA |
| — | github.com/bishopfox/sliver (Go) | 1.5.40 to before 1.6.0 | 1.6.0 | Patch available | GHSA-hc5w-gxxr-w8x8 |
- sliver VendorBishopFox Affected = 1.6.0-dev Fixed in — No fix listed CNA
- github.com/bishopfox/sliver (Go) Vendor— Affected 1.5.40 to before 1.6.0 Fixed in 1.6.0 Patch available GHSA-hc5w-gxxr-w8x8
Remediation
- Fix · GHSA-hc5w-gxxr-w8x8 github.com/bishopfox/sliver (Go) Fixed in 1.6.0 Advisory →
Timeline
- 2026-10-02 Threatist record created from CVE-2024-41111
- 2026-10-03 Alias added: GHSA-hc5w-gxxr-w8x8
References
Other 8
- https://github.com/BishopFox/sliver/security/advisories/GHSA-hc5w-gxxr-w8x8
- https://github.com/BishopFox/sliver/issues/65
- https://github.com/BishopFox/sliver/pull/1281
- https://github.com/BishopFox/sliver/commit/5016fb8d7cdff38c79e22e8293e58300f8d3bd57
- https://sliver.sh/docs?name=Multi-player+Mode
- https://github.com/BishopFox/sliver/commit/0deaee625d14c6f05f63c86e5c3b7ae623a1138f
- https://github.com/BishopFox/sliver/commit/d8ff64222dc69d931197d0bbae3fba11dbe17533
- https://github.com/BishopFox/sliver
More BishopFox vulnerabilities
- TI-2025-19960 Server-Side Request Forgery (SSRF) in sliver teamserver CVSS 4.0MEDIUM 6.9
- TI-2023-17391 Sliver from v1.5.x to v1.5.39 has an improper cryptographic implementation, which allows… CVSS 3.1HIGH 8.1
- TI-2026-65413 Sliver 1.7.7 Denial of Service via PE Parser Slice Bounds in Operator RPC CVSS 4.0MEDIUM 6.8
- TI-2025-19963 Sliver does not restricted traffic between Wireguard clients. CVSS 3.1MEDIUM 6.3
- TI-2026-26522 Sliver One-Click Remote Access: Insecure CORS & Unauthenticated MCP Interface CVSS 4.0MEDIUM 5.9
- TI-2026-25389 Sliver Vulnerable to Authenticated OOM via Memory Exhaustion in mTLS/WireGuard Transports CVSS 4.0MEDIUM 5.7
Sources
- CVE-2024-41111 · CVE Program
- CVE-2024-41111 · NVD
- FIRST EPSS
- GHSA-hc5w-gxxr-w8x8 · GitHub Advisory Database · CC BY 4.0
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