Vulnerability · Published Sep 3, 2026 · Assigned by VulnCheck

CVE-2026-85427MOOS essential-moos through 10.0.1 pAntler Remote Code Execution via Unauthenticated MISSION_FILE

High 8.1

In plain English

A high-severity security flaw in essential-moos from themoos. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.6% (higher than 46% of all known vulnerabilities).

Severity (CVSS 3.1)8.1High

Exploit odds (30 days)0.6%top 53.7% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official description

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.

Affected products (as reported)

Vendor	Product	Versions
themoos	essential-moos	0 – through 10.0.1

Weakness: CWE-494 · Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

References

Pull Request #17 issue-tracking, patch
Proposed fix commit (pull request not merged) patch
https://github.com/themoos/essential-moos product
Antler.cpp (verified sink) technical-description
VulnCheck Advisory: MOOS essential-moos through 10.0.1 pAntler Remote Code Execution via Unauthenticated MISSION_FILE third-party-advisory