CVE-2021-32574

HashiCorp Consul and Consul Enterprise 1.3.0 through 1.10.0 Envoy proxy TLS configuration does not validate destination service identity in the encoded subject alternative name. Fixed in 1.8.14, 1.9.8, and 1.10.1.

Published: 2021-07-17 Last update: 2026-06-16 Assigner: [email protected] Source: [email protected]

NVD Status：Modified，CVE State: published

View at NVD, CVE.org, EUVD

Threat Intelligence & Risk Assessment for CVE-2021-32574

EPSS CVSS CWE GHSA Affected OS Tracker

Conclusion & alert: CVE-2021-32574 is rated Moderate Risk (55.2/100): CVSS High severity, with medium exploitation likelihood (EPSS 1.46%). Mandatory action: 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-2021-32574

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	0.80%	1.46%	+0.66%
2	2025-11-21	0.48%	0.80%	+0.32%
3	2025-11-18	—	0.48%	—

Full EPSS history (17 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2021-32574

CVSS metrics for this CVE.

Base score	Version	Severity	Vector	Exploitability	Impact	Score source
7.5	3.1	HIGH	`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N` 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:N) No account or special rights needed—anonymous or random user is enough. 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:N) Doesn’t really leak secrets in a meaningful way. Integrity (I:H) They could widely tamper with or forge data—trust in the data is badly hurt. Availability (A:N) Service keeps running; no real outage angle.	3.9	3.6	[email protected]
5.0	2.0	MEDIUM	`AV:N/AC:L/Au:N/C:N/I:P/A:N` 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:N) No authentication is required. Confidentiality impact (C:N) No confidentiality impact. Integrity impact (I:P) Partial integrity impact. Availability impact (A:N) No availability impact.	10.0	2.9	[email protected]

Weakness enumeration for CVE-2021-32574

CWE-295 MITRE ↗

GitHub Security Advisory for CVE-2021-32574

GHSA-25gf-8qrr-g78r · Severity: high · Ecosystem: go — Hashicorp Consul Missing SSL Certificate Validation

OS Trackers for CVE-2021-32574

vendor	priority	summary	link
`alpine`	high	CVE-2021-32574: 1 source package rows (consul); 1 state rows across 1 repos (edge-community); fixed 0, open 1.	https://security.alpinelinux.org/vuln/CVE-2021-32574
`debian`	not yet assigned	CVE-2021-32574 not yet assigned priority: Debian including 1 source packages (consul), 1 status rows across 1 suites (bullseye): open 1.	https://security-tracker.debian.org/tracker/CVE-2021-32574
`gentoo`	low	CVE-2021-32574: 1 GLSA(s) (202208-09), 1 atom(s) (app-admin/consul); latest impact low.	https://bugs.gentoo.org/buglist.cgi?quicksearch=CVE-2021-32574
`ubuntu`	medium	CVE-2021-32574 medium priority: Ubuntu including 1 source packages (consul), 16 status rows across 16 suites (bionic, focal, groovy, hirsute, impish, jammy, kinetic, lunar, mantic, noble, oracular, plucky, questing, trusty, upstream, xenial): DNE 6, ignored 5, needs-triage 4, not-affected 1.	https://ubuntu.com/security/CVE-2021-32574

Affected software / configurations for CVE-2021-32574

Vendor	Product	Version	Raw CPE
hashicorp	consul	>= 1.3.0, < 1.8.14	cpe:2.3:a:hashicorp:consul:::::-:::*
hashicorp	consul	>= 1.3.0, < 1.8.14	cpe:2.3:a:hashicorp:consul:::::enterprise:::*
hashicorp	consul	>= 1.9.0, < 1.9.8	cpe:2.3:a:hashicorp:consul:::::-:::*
hashicorp	consul	>= 1.9.0, < 1.9.8	cpe:2.3:a:hashicorp:consul:::::enterprise:::*
hashicorp	consul	>= 1.10.0, < 1.10.1	cpe:2.3:a:hashicorp:consul:::::-:::*
hashicorp	consul	>= 1.10.0, < 1.10.1	cpe:2.3:a:hashicorp:consul:::::enterprise:::*

References for CVE-2021-32574

URL	Tags
https://discuss.hashicorp.com/t/hcsec-2021-17-consul-s-envoy-tls-configuration-did-not-validate-destination-service-subject-alternative-names/26856	Vendor Advisory
https://github.com/hashicorp/consul/releases/tag/v1.10.1	Third Party Advisory
https://security.gentoo.org/glsa/202208-09	Third Party Advisory
https://www.hashicorp.com/blog/category/consul	Vendor Advisory

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