High severity · published May 18, 2021
CVE-2021-22117
RabbitMQ installers on Windows prior to version 3.8.16 do not harden plugin directory permissions, potentially allowing attackers with sufficient local filesystem permissions to…
7.8
CVSS
0.6%
EPSS
No
On KEV
Description
RabbitMQ installers on Windows prior to version 3.8.16 do not harden plugin directory permissions, potentially allowing attackers with sufficient local filesystem permissions to add arbitrary plugins.
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack vector
Local
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.6% · higher than 49% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
RS
Rabbitmq Server · Broadcom
3.8.0 before 3.8.16 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2021-22117
CVE.org
https://www.cve.org/CVERecord?id=CVE-2021-22117
Vendor Advisory
https://tanzu.vmware.com/security/cve-2021-22117
More from Rabbitmq Server
10.0
CVE-2026-57216
RabbitMQ: AMQP 1.0, AMQP 0-9-1, Stream Protocol loopback enforcement can lead to remote guest sessions due to listener-address loopback checks
10.0
CVE-2026-57211
RabbitMQ: UNC SSRF affecting the management UI on Windows
9.8
CVE-2016-9877
An issue was discovered in Pivotal RabbitMQ 3.x before 3.5.8 and 3.6.x before 3.6.6 and RabbitMQ for PCF 1.5.x before 1.5.20, 1.6.x before 1.6.12, and 1.7.x before 1.7.7
9.3
CVE-2026-67237
RabbitMQ: Reflected XSS via the OAuth bootstrap JS endpoint
9.1
CVE-2026-67231
RabbitMQ: Trust-store whitelist by Issuer+Serial only
