Common Weakness Enumeration
CWE-521
AllowedWeak Password Requirements
Abstraction: Base · Status: Draft
The product does not require that users should have strong passwords.
354 vulnerabilities reference this CWE, most recent first.
CVE-2026-6284 (GCVE-0-2026-6284)
Vulnerability from cvelistv5 – Published: 2026-04-17 15:14 – Updated: 2026-04-20 14:58
VLAI
EPSS
VEX
Title
Horner Automation Cscape and XL4, XL7 PLC Weak password requirements
Summary
An attacker with network access to the PLC is able to brute force discover passwords to gain unauthorized access to systems and services. The limited password complexity and no password input limiters makes brute force password enumeration possible.
Severity
9.1 (Critical)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: total
CISA Coordinator (v2.0.3)
Assigner
References
Impacted products
3 products
| Vendor | Product | Version | |
|---|---|---|---|
| Horner Automation | Cscape |
Affected:
10.0
|
|
| Horner Automation | XL7 PLC |
Affected:
15.60
|
|
| Horner Automation | XL4 PLC |
Affected:
16.32.0
|
Date Public
2026-04-16 17:00
Credits
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CVE-2026-1408 (GCVE-0-2026-1408)
Vulnerability from cvelistv5 – Published: 2026-01-25 23:02 – Updated: 2026-02-23 08:54
VLAI
EPSS
VEX
Title
Beetel 777VR1 UART weak password
Summary
A weakness has been identified in Beetel 777VR1 up to 01.00.09/01.00.09_55. This vulnerability affects unknown code of the component UART Interface. Executing a manipulation can lead to weak password requirements. The physical device can be targeted for the attack. The attack requires a high level of complexity. It is stated that the exploitability is difficult. The exploit has been made available to the public and could be used for attacks. The vendor was contacted early about this disclosure but did not respond in any way.
Severity
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-521 - Weak Password Requirements
Assigner
References
4 references
| URL | Tags |
|---|---|
| https://vuldb.com/?id.342797 | vdb-entrytechnical-description |
| https://vuldb.com/?ctiid.342797 | signaturepermissions-required |
| https://vuldb.com/?submit.739384 | third-party-advisory |
| https://gist.github.com/raghav20232023/9c51cbd91f… | exploit |
Impacted products
Credits
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CVE-2025-68963 (GCVE-0-2025-68963)
Vulnerability from cvelistv5 – Published: 2026-01-14 02:31 – Updated: 2026-01-14 23:35
VLAI
EPSS
VEX
Summary
Man-in-the-middle attack vulnerability in the Clone module.
Impact: Successful exploitation of this vulnerability may affect service confidentiality.
Severity
5.7 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-521 - Weak Password Requirements
Assigner
References
1 reference
Impacted products
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CVE-2025-67513 (GCVE-0-2025-67513)
Vulnerability from cvelistv5 – Published: 2025-12-10 22:43 – Updated: 2026-02-13 22:10
VLAI
EPSS
VEX
Title
FreePBX Endpoint Manager's Weak Default Password Allows Unauthenticated Access in Endpoint Module REST API
Summary
FreePBX Endpoint Manager is a module for managing telephony endpoints in FreePBX systems. Versions prior to 16.0.96 and 17.0.1 through 17.0.9 have a weak default password. By default, this is a 6 digit numeric value which can be brute forced. (This is the app_password parameter). Depending on local configuration, this password could be the extension, voicemail, user manager, DPMA or EPM phone admin password. This issue is fixed in versions 16.0.96 and 17.0.10.
Severity
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-521 - Weak Password Requirements
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://github.com/FreePBX/security-reporting/sec… | x_refsource_CONFIRM |
Impacted products
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CVE-2025-65014 (GCVE-0-2025-65014)
Vulnerability from cvelistv5 – Published: 2025-11-18 23:01 – Updated: 2025-11-19 14:53
VLAI
EPSS
VEX
Title
LibreNMS has Weak Password Policy
Summary
LibreNMS is an auto-discovering PHP/MySQL/SNMP based network monitoring tool. Prior to version 25.11.0, a weak password policy vulnerability was identified in the user management functionality of the LibreNMS application. This vulnerability allows administrators to create accounts with extremely weak and predictable passwords, such as 12345678. This exposes the platform to brute-force and credential stuffing attacks. This issue has been patched in version 25.11.0.
Severity
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-521 - Weak Password Requirements
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://github.com/librenms/librenms/security/adv… | x_refsource_CONFIRM |
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CVE-2025-55299 (GCVE-0-2025-55299)
Vulnerability from cvelistv5 – Published: 2025-08-18 17:36 – Updated: 2025-08-18 17:54
VLAI
EPSS
VEX
Title
VaulTLS has a password-based login exploit in additional user accounts
Summary
VaulTLS is a modern solution for managing mTLS (mutual TLS) certificates. Prior to 0.9.1, user accounts created through the User web UI have an empty but not NULL password set, attackers can use this to login with an empty password. This is combined with that fact, that previously disabling the password based login only effected the frontend, but still allowed login via the API. This vulnerability is fixed in 0.9.1.
Severity
9.4 (Critical)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-521 - Weak Password Requirements
Assigner
References
2 references
| URL | Tags |
|---|---|
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CVE-2025-55269 (GCVE-0-2025-55269)
Vulnerability from cvelistv5 – Published: 2026-03-26 13:00 – Updated: 2026-03-26 15:01
VLAI
EPSS
VEX
Title
HCL Aftermarket DPC is affected by Weak Password Policy vulnerability
Summary
HCL Aftermarket DPC is affected by Weak Password Policy vulnerability, which makes it easier for attackers to guess weak passwords or use brute-force techniques to gain unauthorized access to user accounts.
Severity
4.2 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-521 - Weak Password Requirements
Assigner
References
1 reference
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| HCL | Aftermarket DPC |
Affected:
version 1.0.0
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CVE-2025-55252 (GCVE-0-2025-55252)
Vulnerability from cvelistv5 – Published: 2026-01-19 18:13 – Updated: 2026-01-20 20:06
VLAI
EPSS
VEX
Title
HCL AION is affected by a Weak Password Policy vulnerability
Summary
HCL AION version 2 is affected by a Weak Password Policy vulnerability. This can allow the use of easily guessable passwords, potentially resulting in unauthorized access
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-521 - Weak Password Requirements
Assigner
References
1 reference
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| HCL Software | AION |
Affected:
2
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CVE-2025-55034 (GCVE-0-2025-55034)
Vulnerability from cvelistv5 – Published: 2025-11-14 23:22 – Updated: 2025-11-17 14:53
VLAI
EPSS
VEX
Title
General Industrial Controls Lynx+ Gateway Weak Password Requirements
Summary
General Industrial Controls Lynx+ Gateway is vulnerable to a weak password requirement vulnerability, which may
allow an attacker to execute a brute-force attack resulting in
unauthorized access and login.
Severity
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
Assigner
References
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| General Industrial Controls | Lynx+ Gateway |
Affected:
Version R08
Affected: Version V03 Affected: Version V05 Affected: Version V18 |
Credits
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CVE-2025-52997 (GCVE-0-2025-52997)
Vulnerability from cvelistv5 – Published: 2025-06-30 20:05 – Updated: 2025-08-04 17:38
VLAI
EPSS
VEX
Title
File Browser Insecurely Handles Passwords
Summary
File Browser provides a file managing interface within a specified directory and it can be used to upload, delete, preview, rename and edit files. Prior to version 2.34.1, a missing password policy and brute-force protection makes the authentication process insecure. Attackers could mount a brute-force attack to retrieve the passwords of all accounts in a given instance. This issue has been patched in version 2.34.1.
Severity
5.9 (Medium)
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://github.com/filebrowser/filebrowser/securi… | x_refsource_CONFIRM |
| https://github.com/filebrowser/filebrowser/commit… | x_refsource_MISC |
| https://github.com/sbaresearch/advisories/tree/pu… | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| filebrowser | filebrowser |
Affected:
< 2.34.1
|
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Mitigation
Architecture and Design
- A product's design should require adherance to an appropriate password policy. Specific password requirements depend strongly on contextual factors, but it is recommended to contain the following attributes:
- Depending on the threat model, the password policy may include several additional attributes.
- See NIST 800-63B [REF-1053] for further information on password requirements.
- {'xhtml:li': ['Enforcement of a minimum and maximum length', 'Restrictions against password reuse', 'Restrictions against using common passwords', 'Restrictions against using contextual string in the password (e.g., user id, app name)']}
- {'xhtml:li': [{'xhtml:ul': {'xhtml:li': ['Increasing the range of characters makes the password harder to crack and may be appropriate for systems relying on single factor authentication.', 'Unfortunately, a complex password may be difficult to memorize, encouraging a user to select a short password or to incorrectly manage the password (write it down).', "Another disadvantage of this approach is that it often does not result in a significant increases in overal password complexity due to people's predictable usage of various symbols."]}, '#text': 'Complex passwords requiring mixed character sets (alpha, numeric, special, mixed case)'}, {'xhtml:ul': {'xhtml:li': ['Increasing the number of characters makes the password harder to crack and may be appropriate for systems relying on single factor authentication.', 'A disadvantage of this approach is that selecting a good passphrase is not easy and poor passwords can still be generated. Some prompting may be needed to encourage long un-predictable passwords.']}, '#text': 'Large Minimum Length (encouraging passphrases instead of passwords)'}, {'xhtml:ul': {'xhtml:li': ['Generating a password for the user can help make sure that length and complexity requirements are met, and can result in secure passwords being used.', 'A disadvantage of this approach is that the resulting password or passpharse may be too difficult to memorize, encouraging them to be written down.']}, '#text': 'Randomly Chosen Secrets'}]}
Mitigation
Architecture and Design
Consider a second authentication factor beyond the password, which prevents the password from being a single point of failure. See CWE-308 for further information.
Mitigation
Implementation
Consider implementing a password complexity meter to inform users when a chosen password meets the required attributes.
Mitigation
Implementation
Previously, "password expiration" was widely advocated as a defense-in-depth approach to minimize the risk of weak passwords, and it has become a common practice. Password expiration requires a password to be changed within a fixed time window (such as every 90 days). However, this approach has significant limitations in the current threat landscape, and its utility has been reduced in light of the adoption of related protection mechanisms (such as password complexity and computational effort), along with the recognition that regular password changes often caused users to generate more predictable passwords. As a result, this is now a Discouraged Common Practice [REF-1488] [REF-1489], especially as the sole factor in protecting passwords. It is still strongly encouraged to force password changes in case of evidence of compromise, but this is not the same as a forced "expiration" on an arbitrary time frame.
CAPEC-112: Brute Force
In this attack, some asset (information, functionality, identity, etc.) is protected by a finite secret value. The attacker attempts to gain access to this asset by using trial-and-error to exhaustively explore all the possible secret values in the hope of finding the secret (or a value that is functionally equivalent) that will unlock the asset.
CAPEC-16: Dictionary-based Password Attack
An attacker tries each of the words in a dictionary as passwords to gain access to the system via some user's account. If the password chosen by the user was a word within the dictionary, this attack will be successful (in the absence of other mitigations). This is a specific instance of the password brute forcing attack pattern.
Dictionary Attacks differ from similar attacks such as Password Spraying (CAPEC-565) and Credential Stuffing (CAPEC-600), since they leverage unknown username/password combinations and don't care about inducing account lockouts.
CAPEC-49: Password Brute Forcing
An adversary tries every possible value for a password until they succeed. A brute force attack, if feasible computationally, will always be successful because it will essentially go through all possible passwords given the alphabet used (lower case letters, upper case letters, numbers, symbols, etc.) and the maximum length of the password.
CAPEC-509: Kerberoasting
Through the exploitation of how service accounts leverage Kerberos authentication with Service Principal Names (SPNs), the adversary obtains and subsequently cracks the hashed credentials of a service account target to exploit its privileges. The Kerberos authentication protocol centers around a ticketing system which is used to request/grant access to services and to then access the requested services. As an authenticated user, the adversary may request Active Directory and obtain a service ticket with portions encrypted via RC4 with the private key of the authenticated account. By extracting the local ticket and saving it disk, the adversary can brute force the hashed value to reveal the target account credentials.
CAPEC-55: Rainbow Table Password Cracking
An attacker gets access to the database table where hashes of passwords are stored. They then use a rainbow table of pre-computed hash chains to attempt to look up the original password. Once the original password corresponding to the hash is obtained, the attacker uses the original password to gain access to the system.
CAPEC-555: Remote Services with Stolen Credentials
This pattern of attack involves an adversary that uses stolen credentials to leverage remote services such as RDP, telnet, SSH, and VNC to log into a system. Once access is gained, any number of malicious activities could be performed.
CAPEC-561: Windows Admin Shares with Stolen Credentials
An adversary guesses or obtains (i.e. steals or purchases) legitimate Windows administrator credentials (e.g. userID/password) to access Windows Admin Shares on a local machine or within a Windows domain.
CAPEC-565: Password Spraying
In a Password Spraying attack, an adversary tries a small list (e.g. 3-5) of common or expected passwords, often matching the target's complexity policy, against a known list of user accounts to gain valid credentials. The adversary tries a particular password for each user account, before moving onto the next password in the list. This approach assists the adversary in remaining undetected by avoiding rapid or frequent account lockouts. The adversary may then reattempt the process with additional passwords, once enough time has passed to prevent inducing a lockout.
CAPEC-70: Try Common or Default Usernames and Passwords
An adversary may try certain common or default usernames and passwords to gain access into the system and perform unauthorized actions. An adversary may try an intelligent brute force using empty passwords, known vendor default credentials, as well as a dictionary of common usernames and passwords. Many vendor products come preconfigured with default (and thus well-known) usernames and passwords that should be deleted prior to usage in a production environment. It is a common mistake to forget to remove these default login credentials. Another problem is that users would pick very simple (common) passwords (e.g. "secret" or "password") that make it easier for the attacker to gain access to the system compared to using a brute force attack or even a dictionary attack using a full dictionary.