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CVE Record

CVE-2021-32574: HashiCorp Consul and Consul Enterprise 1.3.0 through 1.10.0 Envoy proxy TLS configuration does not validate...

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.

UnknownCVSS not scoredNot KEV-listedUpdated
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Glexia's TakeAutomated analysismoderate

Security readout for executives and security teams

Plain-English summary

Consul’s Envoy TLS setup could accept a destination service certificate without properly validating the service identity in the subject alternative name. In affected deployments, this weakens service-to-service trust. HashiCorp says it was fixed in Consul 1.8.14, 1.9.8, and 1.10.1.

Executive priority

Treat this as a targeted service-mesh trust issue, not a confirmed exploited emergency. Prioritize remediation where Consul controls production service-to-service identity or sensitive internal traffic. Lack of CVSS and exploit evidence lowers certainty, but the affected version range is clear.

Technical view

CVE-2021-32574 affects HashiCorp Consul and Consul Enterprise 1.3.0 through 1.10.0. The issue is in Envoy proxy TLS configuration: destination service identity in the encoded subject alternative name was not validated. The supplied sources do not include CVSS, CWE, exploit details, or broader affected-package specifics beyond Consul references.

Likely exposure

Exposure is most likely in organizations running Consul or Consul Enterprise 1.3.0 through 1.10.0 with Envoy proxy TLS/service-mesh traffic enabled. Systems already upgraded to 1.8.14, 1.9.8, 1.10.1, or later are identified as fixed by the source bundle.

Exploitation context

The source bundle does not identify active exploitation, and the CVE is not marked as CISA KEV. The practical concern is weakened identity validation in service-to-service TLS, which could matter most in environments relying on Consul service mesh trust boundaries.

Researcher notes

Key missing evidence: no CVSS vector, CWE, proof-of-concept, or exploit telemetry is provided. Analysis should stay focused on Consul Envoy TLS identity validation and the documented fixed versions. Do not broaden this to unrelated TLS or Envoy defects without separate sourcing.

Mitigation direction

  • Upgrade Consul to 1.8.14, 1.9.8, 1.10.1, or later.
  • Check HashiCorp advisory and release notes for deployment-specific guidance.
  • Prioritize Consul service-mesh deployments using Envoy proxy TLS.
  • For Gentoo-managed systems, review GLSA-202208-09 package guidance.

Validation and detection

  • Inventory Consul and Consul Enterprise versions across production and staging.
  • Confirm whether Envoy proxy TLS/service mesh is enabled.
  • Verify upgraded nodes report a fixed Consul version.
  • Review change records for completion across all Consul datacenters.
Prepared
Confidence
medium
Sources
5

Public sources used

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

Potential ATT&CK relevance

Conservative CVE-to-ATT&CK context

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CVE-2021-32574 mapping review

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Vulnerability profileCVE Program record
Severity
Unknown
CVSS
Not scored
Known Exploited
No
Published
Official CVE source material

CNA and ADP enrichment extracted from CVE v5

These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.

0CVSS vectors
0Timeline events
0ADP providers
5Source links

CVSS and timeline data

No CVSS vectors or timeline events were available in the normalized CVE source material.

Source materials

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
n/an/an/aListed
Weakness

CWE details

No CWE listed

CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.