7.5

CVE-2021-26117: apache software foundation apache activemq Improper Authentication

CVSS: 7.5v3.1HighModified
AliasesUBUNTU-CVE-2021-26117DEBIAN-CVE-2021-26117GHSA-9mgm-gcq8-86wq
Published 27-01-2021Last modified 03-08-2024
Open JSON

Vulnerability summary

CVE-2021-26117 is a high (CVSS 7.5) Improper Authentication vulnerability in apache software foundation apache activemq. EPSS estimates a 11.33% chance of exploitation in the next 30 days, higher than 95.9% of scored vulnerabilities.

Overall risk
32/100
0100
Medium · default modelHow is this calculated?
CVSS score
7.5/10
010
High · v3.1 (NVD)
EPSS score
11.33%
0%100%
Medium · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 3 · Related 1
DLA-2583-1DLA-3657-1USN-6910-1

Timeline

  1. 27-01-2021
    PublishedVulnerability first disclosed.
  2. 03-08-2024
    Last modifiedVulnerability information updated.

Description

The optional ActiveMQ LDAP login module can be configured to use anonymous access to the LDAP server. In this case, for Apache ActiveMQ Artemis prior to version 2.16.0 and Apache ActiveMQ prior to versions 5.16.1 and 5.15.14, the anonymous context is used to verify a valid users password in error, resulting in no check on the password.

CVSS metrics

5 scores · 4 sources · 2 versions

EPSS trend

Probability

11.33%

Chance of exploitation in the next 30 days

Percentile

96%

Versus all other CVEs

30-day change

0.00 pp

From 11.33% on 18-09-2026

18-09-202618-10-2026
EPSS score
11.33%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Oracle4 products
Apache2 products
Debian2 products
Org.apache.activemq2 products
  • activemq-parent≥ 5.16.0, < 5.16.1 | < 5.15.14
  • apache-artemis< 2.16.0
Apache software foundation1 product
  • apache activemq≥ Apache ActiveMQ Artemis, < 2.16.0 | ≥ Apache ActiveMQ, < 5.16.1
Netapp1 product
Ubuntu1 product
  • activemq< 5.13.2+dfsg-2ubuntu0.1~esm1 | < 5.15.8-2~18.04.1~esm1 | < 5.15.11-1ubuntu0.1~esm1

7 vendors · 13 products

References

46 links
Show all 46 references