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CVE-2026-85442

MOOS core-moos through 10.4.0 MOOSDB Denial of Service via Unbounded Packet Allocation

HIGH
7.5
CVSS Score
Published: September 3, 2026 at 10:38 PM UTC
Updated: October 14, 2026 at 11:30 PM UTC
1 product affected across 1 vendorCore Moos

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Severity
HIGH7.5
Exploit prediction
EPSS 0.8%
SSVC
No known exploit

Description

MOOS core-moos through 10.4.0 fails to validate packet length declarations in CMOOSCommPkt::OnBytesWritten(), allowing unauthenticated attackers to trigger unbounded buffer allocation by sending crafted wire packets. Attackers can send packets with large declared lengths to exhaust server memory and cause denial of service before client authentication completes.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Core Moos· Themoos
95%
All versionsv < 10.4.0

References (5)

Issue TrackingPatch
Source: cverecord
https://github.com/themoos/core-moos/pull/81
PatchIssue Tracking
Source: cverecord
https://github.com/themoos/core-moos/commit/e7ea624a7b7828b47fcd35fc43feec1f5cfbbe21
Product
Source: cverecord
https://github.com/themoos/core-moos
Technical DescriptionIssue TrackingPatch
Source: cverecord
https://github.com/themoos/core-moos/blob/ec9c77c68fcbdef8f5e4c60fe243acd223433f0c/Core/libMOOS/Comms/MOOSCommPkt.cpp#L99
Third Party Advisory
Source: cverecord
https://www.vulncheck.com/advisories/moos-core-moos-through-10.4.0-moosdb-denial-of-service-via-unbounded-packet-allocation

SSVC — Action Prioritization

SSVCNo known exploitAutomatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

7.5HIGHVulnCheck
Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH
Vector?

Quick Info

StatusANALYZED
CWE
CWE-789

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