CVE-2026-102507

Sliver 1.7.7 Denial of Service via PE Parser Slice Bounds in Operator RPC

MEDIUM
5.7
CVSS Score
Published: September 29, 2026 at 11:49 AM UTC
Updated: October 1, 2026 at 03:19 PM UTC
1 product affected across 1 vendorSliver

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Severity
MEDIUM5.7
Exploit prediction
EPSS 0.2%
SSVC
PoC

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

1.1.0 ≤ v ≤ 1.7.71.1.0

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

SSVC — Action Prioritization

SSVCPoCNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

5.7MEDIUMVulnCheck
Attack Vector
NETWORK
Complexity
LOW
Privileges
LOW
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH
Vector?

Quick Info

StatusDEFERRED
CWE
CWE-125

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