CVE-2021-41805

Name: CVE-2021-41805
Creator: NVD / NIST
Published: 2021-12-12T05:15:07.917+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 8.8/10EPSS 34.79%

Last modified Jun 17, 2026

CVE-2021-41805 is a high-severity vulnerability rated 8.8/10 on the CVSS scale. HashiCorp Consul Enterprise before 1.8.17, 1.9.x before 1.9.11, and 1.10.x before 1.10.4 has Incorrect Access Control. An ACL token (with the default operator:write permissions) in one namespace can be used for unintended privilege escalation in a different namespace.. EPSS estimates a 34.79% chance of exploitation in the next 30 days.

Description

HashiCorp Consul Enterprise before 1.8.17, 1.9.x before 1.9.11, and 1.10.x before 1.10.4 has Incorrect Access Control. An ACL token (with the default operator:write permissions) in one namespace can be used for unintended privilege escalation in a different namespace.

Metrics

CVSS 3.1

8.8/10

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

EPSS Probability

34.79%

98.2th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-863

Affected Software

Vendor	Product	Versions
Hashicorp	Consul	>= 1.7.0, < 1.8.17
Hashicorp	Consul	>= 1.9.0, < 1.9.11
Hashicorp	Consul	>= 1.10.0, < 1.10.4

References

https://discuss.hashicorp.com/t/hcsec-2021-29-consul-enterprise-namespace-default-acls-allow-privilege-escalation/31871Vendor Advisory
https://security.netapp.com/advisory/ntap-20211229-0007/Third Party Advisory
https://www.hashicorp.com/blog/category/consulProduct, Vendor Advisory
https://discuss.hashicorp.com/t/hcsec-2021-29-consul-enterprise-namespace-default-acls-allow-privilege-escalation/31871Vendor Advisory
https://security.netapp.com/advisory/ntap-20211229-0007/Third Party Advisory
https://www.hashicorp.com/blog/category/consulProduct, Vendor Advisory

Timeline

Published: Dec 12, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-41805?

How severe is CVE-2021-41805?

CVE-2021-41805 has a CVSS score of 8.8/10 (HIGH severity). The EPSS model estimates a 34.79% probability of exploitation in the next 30 days.

How do I fix CVE-2021-41805?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2021-41805?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST