What is CVE-2022-42273?

CVE-2022-42273 is a high-severity vulnerability in NVIDIA Dgx A100, classified under Buffer Copy without Checking Size of Input (Classic Buffer Overflow). CVSS score: 8.1/10. Published 2023-01-12.

How severe is CVE-2022-42273?

High severity. CVSS v3 base score is 8.1 out of 10.

Buffer overflow in NVIDIA Dgx A100

CVE-2022-42273

NVIDIA BMC contains a vulnerability in libwebsocket, where an authorized attacker can cause a buffer overflow and cause a denial of service or gain code execution.

Vulnerability class: Buffer Overflow

Published 2023-01-12 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 8.1 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N.

EPSS exploit prediction

EPSS: 0.008 (57.4th percentile), scored 2026-10-20.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 57th percentile — 57.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.008 · newest: 0.008 · change: 0.000

Affected products

NVIDIA Dgx A100
NVIDIA Dgx A100 Firmware
NVIDIA Dgx Servers — versions All BMC firmware versions prior to 00.19.07

Weakness classification (CWE)

CWE-120 — Buffer Copy without Checking Size of Input (Classic Buffer Overflow)

References

nvidia.custhelp.com/app/answers/detail/a_id/5435 (Vendor Advisory)

Frequently asked questions

What is CVE-2022-42273?: CVE-2022-42273 is a high-severity vulnerability in NVIDIA Dgx A100, classified under Buffer Copy without Checking Size of Input (Classic Buffer Overflow). CVSS score: 8.1/10. Published 2023-01-12.
How severe is CVE-2022-42273?: High severity. CVSS v3 base score is 8.1 out of 10.