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CVE-2026-85441

MOOS core-moos through 10.4.0 MOOSDB Denial of Service via Negative Serialized String Length

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 0.7%
SSVC
No known exploit

Description

MOOS core-moos through 10.4.0 fails to validate that serialized string lengths are non-negative in CMOOSMsg::operator>>. Unauthenticated attackers can send a crafted message with a negative length value to the MOOSDB port, causing an unhandled exception that terminates the database process.

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/74
PatchVendor Advisory
Source: cverecord
https://github.com/themoos/core-moos/commit/04c92981091fdaa2ff85e2ba7eff94f6288bdbaf
Product
Source: cverecord
https://github.com/themoos/core-moos
Technical DescriptionPatchVendor Advisory
Source: cverecord
https://github.com/themoos/core-moos/blob/ec9c77c68fcbdef8f5e4c60fe243acd223433f0c/Core/libMOOS/Comms/MOOSMsg.cpp#L453
Third Party Advisory
Source: cverecord
https://www.vulncheck.com/advisories/moos-core-moos-through-10.4.0-moosdb-denial-of-service-via-negative-serialized-string-length

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-195

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