What is CVE-2021-42973?

CVE-2021-42973 is a high-severity vulnerability in Nomachine Server, classified under Integer Overflow or Wraparound. CVSS score: 8.8/10. Published 2021-12-07.

How severe is CVE-2021-42973?

High severity. CVSS v3 base score is 8.8 out of 10.

Integer overflow in Nomachine Server

CVE-2021-42973

NoMachine Server is affected by Integer Overflow. IOCTL Handler 0x22001B in the NoMachine Server 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.

Vulnerability class: Integer Overflow

EPSS: 0.005 (38.8th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H.

Affected products

Nomachine Server
N/a — versions n/a

Weakness classification (CWE)

CWE-190 — Integer Overflow or Wraparound

References

cve@mitre.org (Technical Description, Exploit, Third Party Advisory, x_refsource_MISC)

Frequently asked questions

What is CVE-2021-42973?: CVE-2021-42973 is a high-severity vulnerability in Nomachine Server, classified under Integer Overflow or Wraparound. CVSS score: 8.8/10. Published 2021-12-07.
How severe is CVE-2021-42973?: High severity. CVSS v3 base score is 8.8 out of 10.