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CVE-2021-37218

27
FAUCET Score

CVE-2021-37218 is a privilege escalation vulnerability affecting HashiCorp Nomad and Nomad Enterprise. It allows non-server agents with a valid certificate from the same CA to access server-only Raft RPC functionality. This vulnerability has a high CVSS score of 8.8, indicating a network-based attack with low complexity that can lead to high impact on confidentiality, integrity, and availability. While no active exploitation or public exploit code is currently reported, and community discussion is minimal, organizations using affected versions (prior to 1.0.10 and 1.1.4) should prioritize patching.

Impacted Technologies

VendorProductVersion(s)CPE
< 1.0.10CPE matchmatch criteria
cpe:2.3:a:hashicorp:nomad:*:*:*:*:-:*:*:*
<= 1.0.10CPE matchmatch criteria
cpe:2.3:a:hashicorp:nomad:*:*:*:*:enterprise:*:*:*
>= 1.1.1, < 1.1.4CPE matchmatch criteria
cpe:2.3:a:hashicorp:nomad:*:*:*:*:-:*:*:*
>= 1.1.1, < 1.1.4CPE matchmatch criteria
cpe:2.3:a:hashicorp:nomad:*:*:*:*:enterprise:*:*:*

CVSS Data

CVSS version used by this source: 3.1

8.8HIGH

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
2.8
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.69%
Probability of exploitation in next 30 days
EPSS Percentile
49.0%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0069 is in the 41st percentile among its peer group of 17,844 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.3 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (2)

gopatch availablevia ghsa
Product: github.com/hashicorp/nomadFixed in: 1.0.10
gopatch availablevia ghsa
Product: github.com/hashicorp/nomadFixed in: 1.1.4

Vendor Advisories (2)

goGHSA-c8x3-rg72-fwwghigh

Privilege escalation in Hashicorp Nomad

Sep 8, 2021
redhatCVE-2021-37218Moderate

nomad: Raft RPC privilege escalation

Sep 1, 2021

References

discuss.hashicorp.com / t/hcsec-2021-21-nomad-raft-rpc-privilege-escalation/29023
Vendor Advisory
hashicorp.com / blog/category/nomad
ProductVendor Advisory