Vulnerability in Themoos Essential-Moos
CVE-2026-85427
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.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 8.1 (High). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.006 (45.0th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 45th percentile — 45.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.004 · newest: 0.006 · change: +0.001
Affected products
Weakness classification (CWE)
References
- github.com/themoos/essential-moos (Product, product)
- github.com/themoos/essential-moos/blob/b897ea86dba8b61412dc48ac0cfb5ff34cdaf5f6… (technical-description, Issue Tracking)
- github.com/themoos/essential-moos/commit/e219f26710927f9c155a6b0dc11e3bd5f3da67… (Patch, patch, Issue Tracking)
- github.com/themoos/essential-moos/pull/17 (issue-tracking, Patch, patch, Issue Tracking)
- www.vulncheck.com/advisories/moos-essential-moos-through-10.0.1-pantler-remote-… (Third Party Advisory, third-party-advisory)
Frequently asked questions
- What is CVE-2026-85427?
- CVE-2026-85427 is a high-severity vulnerability in Themoos Essential-Moos, classified under Download of Code Without Integrity Check. CVSS score: 8.1/10. Published 2026-09-03.
- How severe is CVE-2026-85427?
- High severity. CVSS v3 base score is 8.1 out of 10.