What’s Vulnerable › Vulnerabilities

CVE-2026-85433: MOOS essential-moos through 10.0.1 pShare Unauthorized Runtime Route Reconfiguration

• Severity: critical (CVSS 9.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.8% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2026-09-03 · updated 2026-10-14
• Weakness: CWE-862

Description

MOOS essential-moos pShare through 10.0.1 fails to properly authorize PSHARE_CMD messages, allowing any publisher to reconfigure network routes and listeners at runtime. Attackers can send crafted PSHARE_CMD messages with cmd=output or cmd=input parameters to open new listeners on arbitrary addresses and redirect or duplicate bus traffic to attacker-controlled destinations.

Affected products

• themoos essential-moos: through 10.0.1

References

• https://github.com/themoos/essential-moos
• https://github.com/themoos/essential-moos/blob/b897ea86dba8b61412dc48ac0cfb5ff34cdaf5f6/Essentials/pShare/Share.cpp#L813
• https://github.com/themoos/essential-moos/commit/8e51cedcbd8de9781adec2e9cce354f51750a547
• https://github.com/themoos/essential-moos/pull/20
• https://www.vulncheck.com/advisories/moos-essential-moos-through-10.0.1-pshare-unauthorized-runtime-route-reconfiguration

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