CVE-2020-5721
MikroTik WinBox 3.22 and below stores the user's cleartext password in the settings.cfg.viw...
MikroTik WinBox 3.22 and below stores the user's cleartext password in the settings.cfg.viw configuration file when the Keep Password field is set and no Master Password is set. Keep Password is set by default and, by default Master Password is not set. An attacker with access to the configuration file can extract a username and password to gain access to the router.
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
MikroTik WinBox 3.22 and below stores the user's cleartext password in the settings.cfg.viw configuration file when the Keep Password field is set and no Master Password is set. Keep Password is set by default and, by default Master Password is not set. An attacker with access to the configuration file can extract a username and password to gain access to the router.
- Record
CVE-2020-5721- 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-260, CWE-522
- Updated
- 2026-11-02
CVE List No score
MikroTik WinBox 3.22 and below stores the user's cleartext password in the settings.cfg.viw configuration file when the Keep Password field is set and no Master Password is set. Keep Password is set by default and, by default Master Password is not set. An attacker with access to the configuration file can extract a username and password to gain access to the router.
- Record
CVE-2020-5721- Weakness
- CWE-260
- Updated
- 2026-11-02
EUVDEUVD-2020-26880 No score
MikroTik WinBox 3.22 and below stores the user's cleartext password in the settings.cfg.viw configuration file when the Keep Password field is set and no Master Password is set. Keep Password is set by default and, by default Master Password is not set. An attacker with access to the configuration file can extract a username and password to gain access to the router.
- Record
EUVD-2020-26880- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-gqqr-qcv3-9xg2 No score
MikroTik WinBox 3.22 and below stores the user's cleartext password in the settings.cfg.viw...
MikroTik WinBox 3.22 and below stores the user's cleartext password in the settings.cfg.viw configuration file when the Keep Password field is set and no Master Password is set. Keep Password is set by default and, by default Master Password is not set. An attacker with access to the configuration file can extract a username and password to gain access to the router.
- Record
GHSA-gqqr-qcv3-9xg2- 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-2020-5721 is a medium vulnerability (CVSS 5.5) in Mikrotik Winbox, published April 15, 2020. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.38%, the 32nd percentile. No source names a fixed version.