CWE-521
Weak Password Requirements
The product does not require that users should have strong passwords.
CVE-2026-27575 (GCVE-0-2026-27575)
Vulnerability from cvelistv5 – Published: 2026-02-25 21:35 – Updated: 2026-02-26 20:39
VLAI
Title
Vijkunja has Weak Password Policy Combined with Persistent Sessions After Password Change
Summary
Vikunja is an open-source self-hosted task management platform. Prior to version 2.0.0, the application allows users to set weak passwords (e.g., 1234, password) without enforcing minimum strength requirements. Additionally, active sessions remain valid after a user changes their password. An attacker who compromises an account (via brute-force or credential stuffing) can maintain persistent access even after the victim resets their password. Version 2.0.0 contains a fix.
Severity
9.1 (Critical)
SSVC
Exploitation: poc
Automatable: yes
Technical Impact: total
CISA Coordinator (v2.0.3)
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://github.com/go-vikunja/vikunja/security/ad… | x_refsource_CONFIRM |
| https://vikunja.io/changelog/vikunja-v2.0.0-was-r… | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| go-vikunja | vikunja |
Affected:
< 2.0.0
|
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CVE-2026-33771 (GCVE-0-2026-33771)
Vulnerability from cvelistv5 – Published: 2026-04-09 21:33 – Updated: 2026-04-13 18:06
VLAI
Title
CTP OS: Configuring password requirements does not work which permits the use of weak passwords
Summary
A Weak Password Requirements vulnerability in the password management function of Juniper Networks CTP OS might allow an unauthenticated, network-based attacker to exploit weak passwords of local accounts and potentially take full control of the device.
The password management menu enables the administrator to set password complexity requirements, but these settings are not saved. The issue can be verified with the menu option "Show password requirements". Failure to enforce the intended requirements can lead to weak passwords being used, which significantly increases the likelihood that an attacker can guess these and subsequently attain unauthorized access.
This issue affects CTP OS versions 9.2R1 and 9.2R2.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
- CWE-521 - Weak Password Requirements
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://kb.juniper.net/JSA107864 | vendor-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Juniper Networks | CTP OS |
Affected:
9.2R1 , ≤ 9.2R2
(semver)
|
Date Public
2026-04-08 04:00
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CVE-2026-34203 (GCVE-0-2026-34203)
Vulnerability from cvelistv5 – Published: 2026-03-31 19:27 – Updated: 2026-03-31 20:30
VLAI
Title
Nautobot: Management of users via REST API does not apply configured password validators
Summary
Nautobot is a Network Source of Truth and Network Automation Platform. Prior to versions 2.4.30 and 3.0.10, user creation and editing via the REST API fails to apply the password validation rules defined by Django's AUTH_PASSWORD_VALIDATORS setting (which defaults to an empty list, i.e., no specific rules, but can be configured in Nautobot's nautobot_config.py to apply various rules if desired). This can potentially allow for the creation or modification of users to have passwords that are weak or otherwise do not comply with configured standards. This issue has been patched in versions 2.4.30 and 3.0.10.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-521 - Weak Password Requirements
Assigner
References
5 references
| URL | Tags |
|---|---|
| https://github.com/nautobot/nautobot/security/adv… | x_refsource_CONFIRM |
| https://github.com/nautobot/nautobot/pull/8778 | x_refsource_MISC |
| https://github.com/nautobot/nautobot/pull/8779 | x_refsource_MISC |
| https://github.com/nautobot/nautobot/commit/589f7… | x_refsource_MISC |
| https://github.com/nautobot/nautobot/commit/d1ef3… | x_refsource_MISC |
Impacted products
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CVE-2026-41038 (GCVE-0-2026-41038)
Vulnerability from cvelistv5 – Published: 2026-04-21 10:22 – Updated: 2026-04-21 13:14
VLAI
Title
Weak Password Policy Vulnerability in Quantum Networks Router QN-I-470
Summary
This vulnerability exists in Quantum Networks router due to lack of enforcement of strong password policies in the web-based management interface. An attacker on the same network could exploit this vulnerability by performing password guessing or brute-force attacks against user accounts, leading to unauthorized access to the targeted device.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
- CWE-521 - Weak password requirements
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://www.cert-in.org.in/s2cMainServlet?pageid=… | third-party-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Quantum Networks | Router QN-I-470 |
Affected:
at 6.1.1.B1
(custom)
|
Credits
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CVE-2026-6284 (GCVE-0-2026-6284)
Vulnerability from cvelistv5 – Published: 2026-04-17 15:14 – Updated: 2026-04-20 14:58
VLAI
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
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CVE-2026-9394 (GCVE-0-2026-9394)
Vulnerability from cvelistv5 – Published: 2026-05-24 19:30 – Updated: 2026-05-27 19:38
VLAI
Title
Besen BS20 EV Charging Station Bluetooth Low Energy weak password
Summary
A vulnerability was determined in Besen BS20 EV Charging Station up to 20260426. This impacts an unknown function of the component Bluetooth Low Energy Handler. Executing a manipulation can lead to weak password requirements. The attack needs to be done within the local network. This attack is characterized by high complexity. The exploitability is said to be difficult. The original disclosure mentions, that "[t]hese vulnerabilities have been reported to Besen and we have received their acknowlegement that they are reviewing this as of April 2026."
Severity
SSVC
Exploitation: none
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/vuln/365375 | vdb-entry |
| https://vuldb.com/vuln/365375/cti | signaturepermissions-required |
| https://vuldb.com/submit/813569 | third-party-advisory |
| https://github.com/carfeii/besen#finding-1-weak-a… | related |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Besen | BS20 EV Charging Station |
Affected:
20260426
cpe:2.3:a:besen:bs20_ev_charging_station:*:*:*:*:*:*:*:* |
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Mitigation
Phase: Architecture and Design
Description:
- 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
Phase: Architecture and Design
Description:
- 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
Phase: Implementation
Description:
- Consider implementing a password complexity meter to inform users when a chosen password meets the required attributes.
Mitigation
Phase: Implementation
Description:
- 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.