CVE-2026-102507: bishopfox sliver Out-of-bounds Read

Vulnerability summary

CVE-2026-102507 is a medium (CVSS 6.8) Out-of-bounds Read vulnerability in bishopfox sliver. EPSS estimates a 0.18% chance of exploitation in the next 30 days, higher than 7.5% of scored vulnerabilities. 1 public exploit is recorded.

Timeline

1. 29-09-2026
   PublishedVulnerability first disclosed.
2. 01-10-2026
   Last modifiedVulnerability information updated.

Description

Sliver C2 framework version 1.7.7 and earlier contains an unhandled panic vulnerability in the operator gRPC handler that allows an attacker controlling a compromised implant to crash the entire teamserver by returning a malformed or empty Download response. Attackers can send zero-length or 1-3 byte data payloads through a hostile implant session to trigger an out-of-bounds slice access in the vendored Binject library's BinaryMagic function, which propagates unrecovered through the operator gRPC interceptor chain and terminates the server process, affecting all connected operators.

• CWE-125Out-of-bounds ReadThe product reads data past the end, or before the beginning, of the intended buffer.