CVE-2020-26168

Name: CVE-2020-26168
Creator: NVD / NIST
Published: 2020-11-09T22:15:13.257+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

CRITICALCVSS 9.8/10EPSS 1.58%

Last modified Jun 17, 2026

CVE-2020-26168 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. The LDAP authentication method in LdapLoginModule in Hazelcast IMDG Enterprise 4.x before 4.0.3, and Jet Enterprise 4.x through 4.2, doesn't verify properly the password in some system-user-dn scenarios. As a result, users (clients/members) can be authenticated even if they provide invalid passwords.. EPSS estimates a 1.58% chance of exploitation in the next 30 days.

Description

The LDAP authentication method in LdapLoginModule in Hazelcast IMDG Enterprise 4.x before 4.0.3, and Jet Enterprise 4.x through 4.2, doesn't verify properly the password in some system-user-dn scenarios. As a result, users (clients/members) can be authenticated even if they provide invalid passwords.

Metrics

CVSS 3.1

9.8/10

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

EPSS Probability

1.58%

72.3th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-287

Affected Software

Vendor	Product	Versions
Hazelcast	Hazelcast	>= 4.0, < 4.0.3
Hazelcast	Jet	>= 4.0, <= 4.2

References

https://docs.hazelcast.org/docs/ern/index.html#4-0-3Release Notes, Vendor Advisory
https://hazelcast.zendesk.com/hc/en-us/articles/360050161951--IMDG-Enterprise-4-0-4-0-1-4-0-2-LDAP-Authentication-BypassVendor Advisory
https://hazelcast.zendesk.com/hc/en-us/articles/360051384932--JET-Enterprise-4-0-4-1-4-1-1-4-2-LDAP-Authentication-BypassVendor Advisory
https://jet-start.sh/blog/2020/10/23/jet-43-is-releasedVendor Advisory
https://docs.hazelcast.org/docs/ern/index.html#4-0-3Release Notes, Vendor Advisory
https://hazelcast.zendesk.com/hc/en-us/articles/360050161951--IMDG-Enterprise-4-0-4-0-1-4-0-2-LDAP-Authentication-BypassVendor Advisory
https://hazelcast.zendesk.com/hc/en-us/articles/360051384932--JET-Enterprise-4-0-4-1-4-1-1-4-2-LDAP-Authentication-BypassVendor Advisory
https://jet-start.sh/blog/2020/10/23/jet-43-is-releasedVendor Advisory

Timeline

Published: Nov 9, 2020
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2020-26168?

How severe is CVE-2020-26168?

CVE-2020-26168 has a CVSS score of 9.8/10 (CRITICAL severity). The EPSS model estimates a 1.58% probability of exploitation in the next 30 days.

How do I fix CVE-2020-26168?

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-2020-26168?

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

Scan your code now

Source: NVD / NIST