x64dbg-MCP Server is a native Model Context Protocol (MCP) plugin for x64dbg that exposes the debugger's full functionality over HTTP. Prior to 1.1, x64dbg-MCP Server exposes all MCP debugger tools over HTTP and SSE without authentication while listening on 0.0.0.0 by default. Any unauthenticated network client that can reach the default port, 9094 for x64 or 9095 for x32, can execute arbitrary x64dbg commands, attach to processes by PID, read and write debuggee memory, and write files to arbitrary paths. This issue is fixed in version 1.1.
CVE-2026-107824
CRITICALPre-NVD 9.39.3
EchelonGraph scoreLOW confidence
This critical-severity CVE scores 9.3 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit-prediction score not yet available (the EPSS model rescores nightly; freshly-published CVEs typically appear within 48 hours). GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).
Triggered by: NVD CVSS baseline
Sources: secondary
9.3EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
- High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: —CVSS: 9.3Exploit: None knownExposed services: Not assessed
A fix is available — apply it.
- CVSS v3
- 9.3
- EG Score
- 9.3CRITICALlow confidence
- EG Risk
- 46EG Risk 46/100CISA SSVC
EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).
How it’s computedSeverity93% × 45%Exploitation0% × 40%Automatability30% × 15%CISA SSVC: Track at low or medium mission impact; Track* or Attend at high (mission-essential systems).Action: A fix is available. Apply it within your standard update timelines at low or medium mission impact and sooner than that at high. - EPSS PROB
- —
- EPSS %ILE
- —
- KEV
- Not listed
CISA SSVCTrack at low or medium mission impact; Track* or Attend at high (mission-essential systems).
A fix is available. Apply it within your standard update timelines at low or medium mission impact and sooner than that at high.
Exploitation none (no KEV listing, exploit record or EPSS ≥ 50%) · Automatable unknown (not published for this CVE) · Technical impact total (CVSS ≥ 9.0). Mission impact is CISA's Mission & Well-being decision point, and only you can judge it: high means the affected system is essential to your organisation's mission, or its compromise could cause irreversible harm to people. CISA's decision table
Published
October 9, 2026
Last Modified
October 9, 2026
Advisory Details (6)
Auto-updated Oct 9, 2026🔬 Proof of concept available. Patch available. Sources: github, github_commit, github_release.
github_release Patch Available
v1.1
Patch available: duty1g/x64dbg-mcp-server v1.1
https://github.com/duty1g/x64dbg-mcp-server/releases/tag/v1.1github_release Patch Available
v1.0
Patch available: duty1g/x64dbg-mcp-server 1.0
https://github.com/duty1g/x64dbg-mcp-server/releases/tag/1.0github_commit
commit e1daba003895 (duty1g/x64dbg-mcp-server)
Fix landed in duty1g/x64dbg-mcp-server commit e1daba003895 — awaiting tagged release
https://github.com/duty1g/x64dbg-mcp-server/commit/e1daba0038959f88d25ff3376b2a7f922ffeb448github_commit
commit 1aad0f88b9c2 (duty1g/x64dbg-mcp-server)
Fix landed in duty1g/x64dbg-mcp-server commit 1aad0f88b9c2 — awaiting tagged release
https://github.com/duty1g/x64dbg-mcp-server/commit/1aad0f88b9c27233d11dbccf08ca415eb5f49203githubMentions a patch (unverified)🟡 PoC Available
Unauthenticated pre-auth integer-overflow denial of service via Content-Length in the MCP HTTP receive path · Advisory · duty1g/x64dbg-mcp-server · GitHub
https://github.com/duty1g/x64dbg-mcp-server/security/advisories/GHSA-jgj3-97w2-9v9rgithubMentions a patch (unverified)
Unauthenticated MCP transport gives any network client remote control of x64dbg, including arbitrary command execution and process attach · Advisory · duty1g/x64dbg-mcp-server · GitHub
Affected: v1.0 via:
https://github.com/duty1g/x64dbg-mcp-server/security/advisories/GHSA-4478-h5jv-647mWeakness Classification(1)
MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.
Data Freshness Timeline
(refreshed 3× in last 7d / 3× in last 30d)
Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.
- 2026-10-09 18:34 UTCEG score recompute
- 2026-10-09 17:54 UTCEG score recompute
- 2026-10-09 17:53 UTCMITRE cvelistV5first tracked
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Frequently asked(4)
What is CVE-2026-107824?
CVE-2026-107824 is a critical vulnerability published on October 9, 2026. x64dbg-MCP Server is a native Model Context Protocol (MCP) plugin for x64dbg that exposes the debugger's full functionality over HTTP. Prior to 1.1, x64dbg-MCP Server exposes all MCP debugger tools over HTTP and SSE without authentication while listening on 0.0.0.0 by default. Any unauthenticated…
When was CVE-2026-107824 disclosed?
CVE-2026-107824 was first published on October 9, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
What is the CVSS score of CVE-2026-107824?
CVE-2026-107824 has a CVSS base score of 9.3 (a secondary CVSS source that NVD displays; NVD's own analysis pending). The EG score is currently aggregating — additional source signals are being incorporated as they become available..
How do I remediate CVE-2026-107824?
A fix for CVE-2026-107824 is available: update to the fixed version the vendor names in its advisory.
Dependency Blast Radius
Explore the affected products and dependency analysis for CVE-2026-107824
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