VULNERABILITY INTELLIGENCE

CVE-2026-85440

CVSS score9.8 CRITICAL
EPSS probability1.03%
CISA KEVNot currently listed
Published2026-09-03
Last modified2026-10-14
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

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.

Weakness classification

  • disclosure@vulncheck.com: CWE-787

Primary references