What is CVE-2021-32575?

CVE-2021-32575 is a medium-severity vulnerability in Hashicorp Nomad. CVSS score: 6.5/10. Published 2021-06-17.

How severe is CVE-2021-32575?

Medium severity. CVSS v3 base score is 6.5 out of 10.

Vulnerability in Hashicorp Nomad

CVE-2021-32575

HashiCorp Nomad and Nomad Enterprise up to version 1.0.4 bridge networking mode allows ARP spoofing from other bridged tasks on the same node. Fixed in 0.12.12, 1.0.5, and 1.1.0 RC1.

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

CVSS v3 metric

CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N.

EPSS exploit prediction

EPSS: 0.005 (41.3th percentile), scored 2026-09-30.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 41st percentile — 41.3% 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

Hashicorp Nomad

References

www.hashicorp.com/blog/category/nomad (Product)
discuss.hashicorp.com/t/hcsec-2021-14-nomad-bridge-networking-mode-allows-arp-s… (Patch, Vendor Advisory)

Frequently asked questions

What is CVE-2021-32575?: CVE-2021-32575 is a medium-severity vulnerability in Hashicorp Nomad. CVSS score: 6.5/10. Published 2021-06-17.
How severe is CVE-2021-32575?: Medium severity. CVSS v3 base score is 6.5 out of 10.