Hashicorp Consul 1.21
Hashicorp Consul 1.21
The Hashicorp Consul 1.21 reaches end of service life on Apr 30, 2027. Third-party support keeps it managed past that date — issue management, vulnerability remediation, and compliance maintenance from 24/7 engineers.
24/7 engineers own your Hashicorp Consul 1.21 incidents end to end.
Mitigation and patch-around guidance when the vendor no longer ships fixes.
Controls evidence and documentation that keep auditors satisfied.
Specifications
- product
- consul
- release
- 1.21
- product Label
- Hashicorp Consul
- release Label
- 1.21 (LTS)
- codename
- lts
- true
- latest Version
- 1.21.5
- release Date
- 2025-05-06
- maintained
- true
- source Url
- https://endoflife.date/consul
Lifecycle Dates
- End of Service Life
- Apr 30, 2027
- Last OEM Support
- Apr 30, 2027
OEM vs. 3rd Party Support
See how third-party support compares to the vendor contract for Hashicorp Consul 1.21 — monitoring, break/fix, vulnerability work, operations and compliance, before and after EOSL.
| Feature | OEM Support | 3rd Party Support |
|---|---|---|
| Post-EOSL Support | ||
| Break/Fix Support | Until EOSL | |
| 24/7 Monitoring | ||
| Vulnerability Scanning & Remediation | ||
| Managed Operations | ||
| Procedure & Configuration Review | ||
| Compliance & Audit Documentation | Limited | |
| Discounted Migration to Other Platforms |
Why Choose 3rd Party Support for Hashicorp Consul 1.21?
Vulnerability Remediation
Scanning, mitigation and patch-around guidance for Hashicorp Consul 1.21 when the vendor no longer ships fixes.
Compliance Maintenance
Procedure review, controls evidence and the documentation auditors ask for — maintained continuously, not scrambled at audit time.
24/7 Expert Support
Engineers who know this release monitor, manage and fix issues around the clock — break/fix to managed operations.
Hashicorp Consul 1.21 Support: Frequently Asked Questions
Is the Hashicorp Consul 1.21 still supported?
Yes, but Hashicorp Consul support for the Hashicorp Consul 1.21 ends on Apr 30, 2027. You can upgrade on the vendor's schedule, or move to third-party support and keep the release you're on — issues managed, vulnerabilities remediated, compliance maintained.
When is the Hashicorp Consul 1.21 end of service life (EOSL) date?
Hashicorp Consul lists the end of service life for the Hashicorp Consul 1.21 as Apr 30, 2027.
Can I keep using the Hashicorp Consul 1.21 after its EOSL date?
Yes. EOSL means Hashicorp Consul stops issuing patches and support — the software itself keeps running. Third-party support covers it from there: issue management, security vulnerability remediation, and the compliance documentation auditors ask for, for as long as you choose to run it.
How much does third-party support for the Hashicorp Consul 1.21 cost?
Typically 40-70% below the OEM maintenance renewal price. Exact pricing depends on quantity, service level and location. You get an indicative price within 24 hours and a firm quote within 48.
Known Vulnerabilities Affecting Hashicorp Consul 1.21
2 published CVEs affect the Hashicorp Consul 1.21. Our 24/7 engineers help you assess exposure, prioritize fixes and apply available patches.
| CVE | Severity | CVSS | Published | Summary |
|---|---|---|---|---|
| CVE-2025-11375 | MEDIUM | 6.5 | Oct 28, 2025 | Consul and Consul Enterprise’s (“Consul”) event endpoint is vulnerable to denial of service (DoS) due to lack of maximum value on the Content Length header. This vulnerability, CVE-2025-11375, is fixed in Consul Community Edition 1.22.0 and Consul Enterprise 1.22.0, 1.21.6, 1.20.8 and 1.18.12. |
| CVE-2025-11374 | MEDIUM | 6.5 | Oct 28, 2025 | Consul and Consul Enterprise’s (“Consul”) key/value endpoint is vulnerable to denial of service (DoS) due to incorrect Content Length header validation. This vulnerability, CVE-2025-11374, is fixed in Consul Community Edition 1.22.0 and Consul Enterprise 1.22.0, 1.21.6, 1.20.8 and 1.18.12. |