8.8

CVE-2021-37218: hashicorp nomad Improper Certificate Validation

CVSS: 8.8v3.1HighModified
AliasesUBUNTU-CVE-2021-37218GHSA-c8x3-rg72-fwwgGO-2022-0591
Published 07-09-2021Last modified 04-08-2024
Open JSON

Vulnerability summary

CVE-2021-37218 is a high (CVSS 8.8) Improper Certificate Validation vulnerability in hashicorp nomad. EPSS estimates a 0.67% chance of exploitation in the next 30 days, higher than 51.1% of scored vulnerabilities.

Overall risk
35/100
0100
Medium · default modelHow is this calculated?
CVSS score
8.8/10
010
High · v3.1 (NVD)
EPSS score
0.67%
0%100%
Low · -0.02 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Timeline

  1. 07-09-2021
    PublishedVulnerability first disclosed.
  2. 04-08-2024
    Last modifiedVulnerability information updated.

Description

HashiCorp Nomad and Nomad Enterprise Raft RPC layer allows non-server agents with a valid certificate signed by the same CA to access server-only functionality, enabling privilege escalation. Fixed in 1.0.10 and 1.1.4.

CVSS metrics

4 scores · 3 sources · 2 versions

EPSS trend

Probability

0.67%

Chance of exploitation in the next 30 days

Percentile

51%

Versus all other CVEs

30-day change

-0.02 pp

From 0.69% on 20-09-2026

20-09-202620-10-2026
EPSS score
0.67%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Github.com/hashicorp1 product
  • nomad< 1.0.10 | ≥ 1.1.0, < 1.1.4
Hashicorp1 product
  • nomad< 1.0.10 | ≤ 1.0.10 | ≥ 1.1.1, < 1.1.4
Ubuntu1 product
  • nomadAll versions (No fix recorded)

3 vendors · 3 products

References

7 links