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CVE-2026-85436— MOOS essential-moos through 10.0.1 pMOOSBridge Heap Corruption via Negative UDP Length

Quick assessment

Affected
themoos essential-moos
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

themoos essential-moos是themoos组织的一款威胁情报与网络防护产品。 themoos essential-moos 10.0.1及之前版本存在数字错误漏洞，该漏洞源于CMOOSUDPLink::ReadPktFromArray()函数中存在缓冲区溢出问题，处理带有负声明长度的UDP数据包时触发过大的memcpy操作越界写入，可能导致堆损坏和拒绝服务。

CVSS 7.5 · High EPSS 2.08% · P81

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application

Affected Version Matrix 1

VendorProduct Version RangeStatus
themoos essential-moos ≤ 10.0.1 affected
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I. Basic Information for CVE-2026-85436

Vulnerability Information
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Vulnerability Title
MOOS essential-moos through 10.0.1 pMOOSBridge Heap Corruption via Negative UDP Length
Source: CVE Program / CVE List V5
Vulnerability Description
MOOS essential-moos through 10.0.1 contains a buffer overflow vulnerability in CMOOSUDPLink::ReadPktFromArray() that allows remote attackers to corrupt heap memory by sending UDP datagrams with negative declared lengths. Attackers can send crafted UDP packets to the configured UDPListen port to trigger an oversized memcpy operation that writes past the destination buffer, causing heap corruption and denial of service.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
整数下溢(超界折返)
Source: CVE Program / CVE List V5
Vulnerability Title
themoos essential-moos 数字错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
themoos essential-moos是themoos组织的一款威胁情报与网络防护产品。 themoos essential-moos 10.0.1及之前版本存在数字错误漏洞，该漏洞源于CMOOSUDPLink::ReadPktFromArray()函数中存在缓冲区溢出问题，处理带有负声明长度的UDP数据包时触发过大的memcpy操作越界写入，可能导致堆损坏和拒绝服务。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
themoos essential-moos 0 ~ 10.0.1 -

II. Public POCs for CVE-2026-85436

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III. Intelligence Information for CVE-2026-85436

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Patches & Fixes for CVE-2026-85436 (2)

Vendor Advisories for CVE-2026-85436 (1)

Security Blog Posts for CVE-2026-85436 (1)

Other References for CVE-2026-85436 (1)

Same Patch Batch · themoos · 2026-09-03 · 18 CVEs total

CVE-2026-85440 9.8 CRITICAL MOOS core-moos through 10.4.0 MOOSDB Pre-Authentication Heap Overflow via Negative Packet
CVE-2026-85433 9.8 CRITICAL MOOS essential-moos through 10.0.1 pShare Unauthorized Runtime Route Reconfiguration
CVE-2026-85424 9.8 CRITICAL MOOS core-moos through 10.4.0 Missing Authentication for MOOSDB Publish, Subscribe and DB_
CVE-2026-85428 9.8 CRITICAL MOOS core-moos through 10.4.0 MOOSDB HTTP Server Unauthenticated Variable Write
CVE-2026-85430 9.1 CRITICAL MOOS essential-moos through 10.0.1 pShare Unauthenticated UDP Datagram Republishing
CVE-2026-85452 8.8 HIGH MOOS ui-moos through 50b9c6c uMS Buffer Overflow via Long MOOS Identifiers
CVE-2026-85455 8.2 HIGH MOOS core-moos through 10.4.0 MOOSDB Out-of-Bounds Read via Short Packet
CVE-2026-85432 8.2 HIGH MOOS core-moos through 10.4.0 MOOSDB Message Source Spoofing via Wire Identity
CVE-2026-85427 8.1 HIGH MOOS essential-moos through 10.0.1 pAntler Remote Code Execution via Unauthenticated MISSI
CVE-2026-85441 7.5 HIGH MOOS core-moos through 10.4.0 MOOSDB Denial of Service via Negative Serialized String Leng
CVE-2026-85443 7.5 HIGH MOOS core-moos through 10.4.0 MOOSDB Accept Loop Denial of Service
CVE-2026-85431 7.5 HIGH MOOS essential-moos through 10.0.1 pMOOSBridge Unauthenticated UDP Packet Injection
CVE-2026-85450 7.5 HIGH MOOS core-moos through 10.4.0 MOOSDB HTTP Server Resource Exhaustion
CVE-2026-85442 7.5 HIGH MOOS core-moos through 10.4.0 MOOSDB Denial of Service via Unbounded Packet Allocation
CVE-2026-85451 7.1 HIGH MOOS core-moos through 10.4.0 Remote Process Termination via Hard-Coded Multicast Passphra
CVE-2026-85454 6.1 MEDIUM MOOS core-moos through 10.4.0 Off-by-One Buffer Overflow in Serial Telegram Handling
CVE-2026-85453 6.1 MEDIUM MOOS core-moos through 10.4.0 MOOSDB HTTP Pages Stored Cross-Site Scripting

IV. Related Vulnerabilities

Same product: essential-moos
Same vendor: themoos
Same weakness: CWE-191