CVE-2026-102507
Sliver 1.7.7 Denial of Service via PE Parser Slice Bounds in Operator RPC
MEDIUM 6.8EPSS 0.2%
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.
- Affected
- BishopFox · sliver
- CVSS v4.0 VULNCHECK
- 6.8 MEDIUM
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:A/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X - CVSS v3.1 VULNCHECK
- 5.7 MEDIUM
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:N/A:H - EPSS
- 0.18% chance of exploitation in the next 30 days, 7th percentile
- Published
- 2026-09-29
- Updated
- 2026-10-01
Proof-of-concept exploits (1)
- h00die/sliver_1.7.7_DoS0★ · 2026-09-30