CVE-2021-42986: Integer Overflow
NoMachine Enterprise Client is affected by Integer Overflow. IOCTL Handler 0x22001B in the NoMachine Enterprise Client 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 Software
Event History
Frequently Asked Questions
What is the severity of CVE-2021-42986?
The severity of CVE-2021-42986 is high with a severity value of 8.8.
Which software is affected by CVE-2021-42986?
NoMachine Enterprise Client versions above 4.0.346 and below 7.7.4 are affected by CVE-2021-42986.
What is the impact of CVE-2021-42986?
CVE-2021-42986 can 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.
How can CVE-2021-42986 be exploited?
CVE-2021-42986 can be exploited by local attackers through the IOCTL Handler 0x22001B in the NoMachine Enterprise Client.
Is there a fix for CVE-2021-42986?
Yes, updating the NoMachine Enterprise Client to version 7.7.4 or above will fix CVE-2021-42986.