CVE-2021-26118

Artemis vulnerability

CVSS

7.5

EPSS

4.0%

EPSS pct

89th

Exploited

No known

While investigating ARTEMIS-2964 it was found that the creation of advisory messages in the OpenWire protocol head of Apache ActiveMQ Artemis 2.15.0 bypassed policy based access control for the entire session. Production of advisory messages was not subject to access control in error.

Affected vendor

Apache

Affected product

Artemis

CVSS vector

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

Weakness type (CWE)

CWE-284 — Improper Access Control

Published

2021-01-27

Risk analysis

Based on its CVSS vector, this vulnerability is exploitable over the network, low attack complexity, requiring no privileges, no user interaction. Successful exploitation leads to high impact to integrity.

Its EPSS score of 4.0% reflects a lower probability of exploitation activity in the wild over the next 30 days, placing it above 89% of all scored CVEs.

Check your external exposure to CVE-2021-26118

Confirm whether Apache Artemis is running on any internet-facing host or subdomain.
Match discovered service fingerprints against the version affected by CVE-2021-26118.
Prioritise remediation if the asset is public, business-critical, or near authentication/payment flows.

How ThreatPort helps with CVE-2021-26118

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