CVE-2026-85442Public exploitNetwork attack vector

Pre-authentication crash via unbounded packet allocation

Published Sep 3, 2026 · Updated Sep 4, 2026

Denial of service in themoos Core MOOS 10.4.0 and earlier allows remote attackers to crash MOOSDB with a crafted wire packet. CMOOSCommPkt::OnBytesWritten() passes the unauthenticated four-byte length field to InflateTo(), which uses it directly as a new[] allocation size without a bound. Allocation failure escapes the handshake as std::bad_alloc and terminates MOOSDB before a client name is accepted, interrupting the communications hub.

CVSS severity8.7
High
EPSS probability0.41%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

Denial of service in themoos Core MOOS 10.4.0 and earlier allows remote attackers to crash MOOSDB with a crafted wire packet. CMOOSCommPkt::OnBytesWritten() passes the unauthenticated four-byte length field to InflateTo(), which uses it directly as a new[] allocation size without a bound. Allocation failure escapes the handshake as std::bad_alloc and terminates MOOSDB before a client name is accepted, interrupting the communications hub.

The record

CVE
CVE-2026-85442
Published
Sep 3, 2026
Updated
Sep 4, 2026
Vendor
themoos
Product
Core MOOS
Classifications
CWE-789, T1499.003
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Sep 3, 2026CVE publishedPublication date reported by the CVE source.
  2. Sep 4, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <=10.4.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

themoos · Core MOOSversion=0 <=10.4.0

Published CVSS scores

8.7VulnCheckCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
7.5VulnCheckCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-789Memory Allocation with Excessive Size Value
T1499.003Application Exhaustion Flood

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo