High severity · published Dec 7, 2021
CVE-2021-42986
NoMachine Enterprise Client is affected by Integer Overflow
8.8
CVSS
0.5%
EPSS
No
On KEV
Description
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.
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
Attack vector
Local
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Changed
Exploitation
Is it being used?
Exploit prediction (EPSS)0.5% · higher than 42% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
EC
Enterprise Client · Nomachine
after 4.0.346 before 7.7.4 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2021-42986
CVE.org
https://www.cve.org/CVERecord?id=CVE-2021-42986
Exploit
https://www.sentinelone.com/labs/usb-over-ethernet-multiple-privilege-escalation-vulnerabilities-in-aws-and-other-major-cloud-services/
More from Enterprise Client
8.8
CVE-2021-42983
NoMachine Enterprise Client is affected by Buffer Overflow