CVE•Published 2026-09-03•Modified 2026-09-08•1 article on news•5 live references•NVD data
CVE-2026-85440
Vulnerability data via NVD (ingested)
CVSS v3.1
9.8
CRITICAL
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS percentile
44
Exploit Prediction Scoring System · top 56% of all CVEs
Weaknesses (CWE)
Description
MOOS core-moos through 10.4.0 contains a pre-authentication heap overflow vulnerability in MOOSCommPkt packet handling that allows remote attackers to write arbitrary data by declaring a negative packet length. Attackers can exploit the signed integer check in InflateTo() and negative size conversion in recv() to overflow a four-byte heap buffer during the HandShake phase before authentication.
Timeline
Published 2026-09-03
Modified 2026-09-08
External references
Search for exposed instances
Shodan + Censys queries derived from NVD's CPE data. The vuln tag catches assets Shodan has explicitly linked to this CVE; the product / banner fingerprints find exposed instances even when the vuln tag was never applied (which is common).
More intel sources (5)
Shodan report
vuln:CVE-2026-85440Country / ASN / product breakdown for the vuln query.
Censys
vulnerabilities.cve_id: CVE-2026-85440Censys host search filtered to this CVE id.
grep.app
CVE-2026-85440Public source-code mentions — fast PoC discovery.
GitHub code
CVE-2026-85440GitHub code search for direct mentions.
Google dork
"CVE-2026-85440" exploit -site:nvd.nist.govWrite-ups and news, NVD excluded.
Known PoCs on GitHub
No public proof-of-concept repositories found for CVE-2026-85440 on GitHub.