Nomachine
CVE-2021-42977
HIGH
Severity by source
AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
Primary rating from NVD · only source for this CVE.
CVSS VectorNVD
Lifecycle Timeline
1DescriptionNVD
NoMachine Enterprise Desktop is affected by Integer Overflow. IOCTL Handler 0x22001B in the NoMachine Enterprise Desktop above 4.0.346 and below 7.7.4 allow local attackers to execute arbitrary code in kernel mode or cause a denial of service (memory corruption and OS crash) via specially crafted I/O Request Packet.
AnalysisAI
NoMachine Enterprise Desktop is affected by Integer Overflow. Rated high severity (CVSS 8.8), this vulnerability is low attack complexity. Public exploit code available and no vendor patch available.
Technical ContextAI
This vulnerability is classified as Integer Overflow (CWE-190), which allows attackers to cause unexpected behavior through arithmetic overflow. NoMachine Enterprise Desktop is affected by Integer Overflow. IOCTL Handler 0x22001B in the NoMachine Enterprise Desktop above 4.0.346 and below 7.7.4 allow local attackers to execute arbitrary code in kernel mode or cause a denial of service (memory corruption and OS crash) via specially crafted I/O Request Packet. Affected products include: Nomachine Enterprise Desktop.
RemediationAI
No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Validate arithmetic operations, use safe integer libraries, check bounds before allocation.
An unspecified server utility in NoMachine before 5.3.10 on Mac OS X and Linux allows authenticated users to gain privil
An arbitrary file overwrite vulnerability in NoMachine Free Edition and Enterprise Client for macOS before v8.8.1 allows
NoMachine Enterprise Client is affected by Integer Overflow. Rated high severity (CVSS 8.8), this vulnerability is low a
NoMachine Enterprise Client is affected by Buffer Overflow. Rated high severity (CVSS 8.8), this vulnerability is low at
NoMachine Cloud Server is affected by Buffer Overflow. Rated high severity (CVSS 8.8), this vulnerability is low attack
NoMachine Cloud Server is affected by Integer Overflow. Rated high severity (CVSS 8.8), this vulnerability is low attack
NoMachine Enterprise Desktop is affected by Buffer Overflow. Rated high severity (CVSS 8.8), this vulnerability is low a
NoMachine Server is affected by Integer Overflow. Rated high severity (CVSS 8.8), this vulnerability is low attack compl
NoMachine Server is affected by Buffer Overflow. Rated high severity (CVSS 8.8), this vulnerability is low attack comple
NoMachine before 5.3.27 and 6.x before 6.3.6 allows attackers to gain privileges via a Trojan horse wintab32.dll file lo
An uninitialised stack variable in the nxfuse component that is part of the Open Source DokanFS library shipped with NoM
Incorrect permissions for the folder C:\ProgramData\NoMachine\var\uninstall of Nomachine v7.9.2 allows attackers to perf
Same weakness CWE-190 – Integer Overflow or Wraparound
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External POC / Exploit Code
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