CVE-2021-37219

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.

Published: 2021-09-07 Last update: 2026-06-17 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2021-37219 is rated Moderate Risk (58.3/100): CVSS High severity, with medium exploitation likelihood (EPSS 1.19%). Review affected assets and schedule remediation.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2021-37219

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-06-15 0.43% 1.19% +0.76%
2 2026-01-27 0.66% 0.43% -0.23%
3 2025-12-28 — 0.66% —

Full EPSS history (21 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2021-37219

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
8.8 3.1 HIGH
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:L)
A normal user session is enough; they don’t have to be admin.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:H)
Serious risk that confidential data gets exposed in a big way.
Integrity (I:H)
They could widely tamper with or forge data—trust in the data is badly hurt.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 2.8 5.9 [email protected]
6.5 2.0 MEDIUM
AV:N/AC:L/Au:S/C:P/I:P/A:P Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:L)
Exploitation conditions are straightforward and predictable.
Authentication (AU:S)
A single authentication is required.
Confidentiality impact (C:P)
Partial confidentiality impact.
Integrity impact (I:P)
Partial integrity impact.
Availability impact (A:P)
Partial availability impact.
 8.0 6.4 [email protected]

Weakness enumeration for CVE-2021-37219

GitHub Security Advisory for CVE-2021-37219

GHSA-ccw8-7688-vqx4 · Severity: high · Ecosystem: go — HashiCorp Consul Privilege Escalation Vulnerability

OS Trackers for CVE-2021-37219

vendor priority summary link
alpine high CVE-2021-37219: 1 source package rows (consul); 1 state rows across 1 repos (edge-community); fixed 0, open 1. https://security.alpinelinux.org/vuln/CVE-2021-37219
debian end-of-life CVE-2021-37219 end-of-life priority: Debian including 1 source packages (consul), 1 status rows across 1 suites (bullseye): open 1. https://security-tracker.debian.org/tracker/CVE-2021-37219
gentoo low CVE-2021-37219: 1 GLSA(s) (202207-01), 1 atom(s) (app-admin/vault); latest impact low. https://bugs.gentoo.org/buglist.cgi?quicksearch=CVE-2021-37219
redhat medium — https://access.redhat.com/security/cve/CVE-2021-37219
ubuntu medium CVE-2021-37219 medium priority: Ubuntu including 1 source packages (consul), 15 status rows across 15 suites (bionic, focal, hirsute, impish, jammy, kinetic, lunar, mantic, noble, oracular, plucky, questing, trusty, upstream, xenial): DNE 6, ignored 4, needs-triage 4, not-affected 1. https://ubuntu.com/security/CVE-2021-37219

Affected software / configurations for CVE-2021-37219

Vendor Product Version Raw CPE
hashicorp consul < 1.8.15 cpe:2.3:a:hashicorp:consul:*:*:*:*:-:*:*:*
hashicorp consul < 1.8.15 cpe:2.3:a:hashicorp:consul:*:*:*:*:enterprise:*:*:*
hashicorp consul >= 1.9.0, < 1.9.9 cpe:2.3:a:hashicorp:consul:*:*:*:*:-:*:*:*
hashicorp consul >= 1.9.0, < 1.9.9 cpe:2.3:a:hashicorp:consul:*:*:*:*:enterprise:*:*:*
hashicorp consul >= 1.10.0, < 1.10.2 cpe:2.3:a:hashicorp:consul:*:*:*:*:-:*:*:*
hashicorp consul >= 1.10.0, < 1.10.2 cpe:2.3:a:hashicorp:consul:*:*:*:*:enterprise:*:*:*

References for CVE-2021-37219

cvelogic Threat Intelligence