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CVE-2026-92208— NoMachine mDNS Heap-based Buffer Overflow Remote Code Execution Vulnerability

Quick assessment

Affected
NoMachine NoMachine
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.

NoMachine mDNS 堆缓冲区溢出远程代码执行漏洞。该漏洞允许位于同一网络区域的攻击者在受影响的 NoMachine 安装中执行任意代码，且利用此漏洞无需进行身份验证。 具体缺陷存在于 mDNS 资源记录的解析过程中。问题根源在于：在将用户提供的数据复制到基于堆的缓冲区之前，未对其长度进行适当的验证。攻击者可利用此漏洞，以该服务账户的上下文执行代码。该漏洞编号为 ZDI-CAN-30982。

AI Predicted 9.8 Difficulty: Moderate

Affected Version Matrix 1

VendorProduct Version RangeStatus
NoMachine NoMachine 9.8.2_1 affected
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I. Basic Information for CVE-2026-92208

Vulnerability Information
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Vulnerability Title
NoMachine mDNS Heap-based Buffer Overflow Remote Code Execution Vulnerability
Source: CVE Program / CVE List V5
Vulnerability Description
NoMachine mDNS Heap-based Buffer Overflow Remote Code Execution Vulnerability. This vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of NoMachine. Authentication is not required to exploit this vulnerability. The specific flaw exists within the parsing of mDNS resource records. The issue results from the lack of proper validation of the length of user-supplied data prior to copying it to a heap-based buffer. An attacker can leverage this vulnerability to execute code in the context of the service account. Was ZDI-CAN-30982.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
堆缓冲区溢出
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
NoMachine NoMachine 9.8.2_1 -

II. Public POCs for CVE-2026-92208

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III. Intelligence Information for CVE-2026-92208

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Other References for CVE-2026-92208 (1)

Same Patch Batch · NoMachine · 2026-10-21 · 4 CVEs total

CVE-2026-92209 NoMachine Redis Improper Authentication Local Privilege Escalation Vulnerability
CVE-2026-92210 NoMachine nxhtd Server-Side Request Forgery Information Disclosure Vulnerability
CVE-2026-111184 NoMachine Named Pipe Incorrect Permission Assignment Local Privilege Escalation Vulnerabil

IV. Related Vulnerabilities

Same product: NoMachine
Same vendor: NoMachine
Same weakness: CWE-122

V. Comments for CVE-2026-92208

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