What’s Vulnerable › Vulnerabilities

CVE-2021-37219

• Severity: high (CVSS 8.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.1% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2021-09-07 · updated 2026-06-17
• Weakness: CWE-295

Description

HashiCorp Consul and Consul Enterprise 1.10.1 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 1.8.15, 1.9.9 and 1.10.2.

Affected products

• HashiCorp Consul: before 1.8.15; from 1.9.0 before 1.9.9; from 1.10.0 before 1.10.2 — fixed in 1.10.2, 1.8.15, 1.9.9

How to fix

Upgrade to a fixed version: HashiCorp Consul 1.10.2, 1.8.15, 1.9.9. Check the vendor advisory for mitigations.

References

• https://discuss.hashicorp.com/t/hcsec-2021-22-consul-raft-rpc-privilege-escalation/29024
• https://security.gentoo.org/glsa/202207-01
• https://www.hashicorp.com/blog/category/consul
• https://discuss.hashicorp.com/t/hcsec-2021-22-consul-raft-rpc-privilege-escalation/29024
• https://security.gentoo.org/glsa/202207-01
• https://www.hashicorp.com/blog/category/consul

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