What is CVE-2021-39158?

CVE-2021-39158 is a high-severity vulnerability in NVIDIA Caffe, classified under Insufficient Verification of Data Authenticity. CVSS score: 8.8/10. Published 2021-08-23.

How severe is CVE-2021-39158?

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

Vulnerability in NVIDIA Caffe

CVE-2021-39158

NVCaffe's python required dependencies list used to contain `gfortran`version prior to 0.17.4, entry which does not exist in the repository pypi.org. An attacker could potentially have posted malicious files to pypi.org causing a user to install it within NVCaffe.

Published 2021-08-23 · last modified 2026-06-17.

CVSS v3 metric

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

EPSS exploit prediction

EPSS: 0.005 (40.3th percentile), scored 2026-09-30.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 40th percentile — 40.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.005 · newest: 0.005 · change: 0.000

Affected products

NVIDIA Caffe — versions <= 0.17.4
NVIDIA Nvcaffe

Weakness classification (CWE)

CWE-345 — Insufficient Verification of Data Authenticity

References

github.com/NVIDIA/caffe/security/advisories/GHSA-fmpp-8pwg-vwh9 (Third Party Advisory)

Frequently asked questions

What is CVE-2021-39158?: CVE-2021-39158 is a high-severity vulnerability in NVIDIA Caffe, classified under Insufficient Verification of Data Authenticity. CVSS score: 8.8/10. Published 2021-08-23.
How severe is CVE-2021-39158?: High severity. CVSS v3 base score is 8.8 out of 10.