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essential-moos CVE-2026-85427

| EUVDEUVD-2026-70813 CRITICAL
Download of Code Without Integrity Check (CWE-494)
2026-09-03 VulnCheck GHSA-642v-v74x-5j9x
9.2
CVSS 4.0 · Vendor: VulnCheck
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Vendor (VulnCheck) PRIMARY
9.2 CRITICAL
CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:H/VI:H/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
vuln.today AI
8.1 HIGH

Network-reachable and unauthenticated (AV:N/PR:N/UI:N) but needs pAntler in remote-control mode plus MOOSDB write access (AC:H); execvp() yields full host compromise (C/I/A:H), scope unchanged.

3.1 AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
4.0 AV:N/AC:H/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

Primary rating from Vendor (VulnCheck).

CVSS VectorVendor: VulnCheck

Attack Vector
Network
Attack Complexity
High
Privileges Required
None
User Interaction
None
Scope
X

Lifecycle Timeline

3
Source Code Evidence Fetched
Sep 03, 2026 - 23:38 vuln.today
Analysis Generated
Sep 03, 2026 - 23:38 vuln.today
CVE Published
Sep 03, 2026 - 22:38 cve.org
CRITICAL 9.2

DescriptionCVE.org

MOOS essential-moos pAntler through 10.0.1 contains a remote code execution vulnerability that allows unauthenticated attackers to execute arbitrary programs by publishing a crafted MISSION_FILE message to the MOOSDB. Attackers can publish a mission file containing malicious Run entries that pAntler parses and executes via execvp() without authentication validation.

AnalysisAI

Remote code execution in MOOS essential-moos pAntler through 10.0.1 lets unauthenticated attackers run arbitrary programs on a robot/vehicle host by publishing a crafted MISSION_FILE variable to the MOOSDB. pAntler's headless remote-control path parses the mission file's Run entries and launches them via execvp() with no check on who published the message, so anyone able to write to the MOOSDB can spawn processes. …

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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata

Access
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Delivery
technique details hidden
Exploit
technique details hidden
Execution
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Impact
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Vulnerability AssessmentAI

Exploitation Requires (1) pAntler from essential-moos ≤10.0.1 running in headless remote-control mode where CAntler::DoRemoteControl() consumes the MISSION_FILE variable, and (2) network write access to the MOOSDB so the attacker can publish that variable - MOOSDB performs no client authentication. … Additional conditions and limiting factors are described in the full assessment.
Risk Assessment The impact is genuine full-host RCE (VC:H/VI:H/VA:H), and the vector is network-reachable with no privileges or user interaction (AV:N/PR:N/UI:N). … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in.
Exploit Scenario Full exploit scenario with step-by-step reproduction available after sign-in.
Remediation Apply the upstream fix from themoos/essential-moos PR #17 (commit e219f26710927f9c155a6b0dc11e3bd5f3da6730), which introduces the --mission_source=<MOOSName> option and rejects any MISSION_FILE whose publisher does not match the configured owner (Upstream fix available via PR/commit; a tagged patched release version is not independently confirmed from the provided data). … Detailed patch versions, workarounds, and compensating controls in full report.

Recommended ActionAI

Within 24 hours, conduct a complete inventory of systems running MOOS pAntler version 10.0.1 or earlier, prioritizing production deployments of autonomous robots and vehicles. …

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CVE-2026-85427 vulnerability details – vuln.today

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