Denial of Service Vulnerability in Sliver C2 Framework by h00die
CVE-2026-102507

6.8MEDIUM

Key Information:

Vendor

Bishopfox
Status
Sliver
Vendor
CVE Published:
29 September 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-102507?

The Sliver C2 Framework versions 1.7.7 and earlier contain a vulnerability in the operator gRPC handler that allows an attacker to crash the entire teamserver. By sending malformed or empty Download responses from a compromised implant, attackers can trigger an unhandled panic through the operator gRPC interceptor chain. This leads to an out-of-bounds slice access in the Binject library's BinaryMagic function, causing the server process to terminate and impacting all connected operators.

Affected Version(s)

sliver 1.1.0 <= 1.7.7

Exploit Proof of Concept (PoC)

PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.

CVE-2026-102507 - Proof of Concept

References

https://github.com/h00die/sliver_1.7.7_DoS
exploittechnical-description
https://www.vulncheck.com/advisories/sliver-denial-of-ser...
third-party-advisory

CVSS V4

Score:
6.8
Severity:
MEDIUM
Confidentiality:
None
Integrity:
None
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
Unknown

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

Credit

h00die
VulnCheck
.