CVE-2021-23021
The Nginx Controller 3.x before 3.7.0 agent configuration file /etc/controller-agent/agent.conf...
The Nginx Controller 3.x before 3.7.0 agent configuration file /etc/controller-agent/agent.conf is world readable with current permission bits set to 644.
Attack profile
How easy it is to exploit
- Attack vector
- Local
- Complexity
- Low
- Privileges needed
- Low
- User interaction
- None
What an attacker can affect
- Confidentiality
- High
- Integrity
- None
- Availability
- None
Exploit likelihood
What each source reports
NVD Score used
The Nginx Controller 3.x before 3.7.0 agent configuration file /etc/controller-agent/agent.conf is world readable with current permission bits set to 644.
- Record
CVE-2021-23021- CVSS 3.1
- 5.5 Medium
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N - CVSS 2.0
- 2.1 Low
AV:L/AC:L/Au:N/C:P/I:N/A:N - Weakness
- CWE-732
- Updated
- 2026-11-02
CVE List No score
The Nginx Controller 3.x before 3.7.0 agent configuration file /etc/controller-agent/agent.conf is world readable with current permission bits set to 644.
- Record
CVE-2021-23021- Weakness
- CWE-732
- Updated
- 2026-11-02
EUVDEUVD-2021-10139 No score
The Nginx Controller 3.x before 3.7.0 agent configuration file /etc/controller-agent/agent.conf is world readable with current permission bits set to 644.
- Record
EUVD-2021-10139- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-2ffq-2568-c74h No score
The Nginx Controller 3.x before 3.7.0 agent configuration file /etc/controller-agent/agent.conf...
The Nginx Controller 3.x before 3.7.0 agent configuration file /etc/controller-agent/agent.conf is world readable with current permission bits set to 644.
- Record
GHSA-2ffq-2568-c74h- Weakness
- CWE-732
- Updated
- 2026-11-02
Affected products
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2021-23021 is a medium vulnerability (CVSS 5.5) in F5 Nginx Controller, published June 1, 2021. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.23%, the 13th percentile. No source names a fixed version.