CWE-1391
Weakness Allowed-with-ReviewUse of Weak Credentials
Abstraction: Class · Status: Incomplete
The product uses weak credentials (such as a default key or hard-coded password) that can be calculated, derived, reused, or guessed by an attacker.
Technical nuance
Credentials may be weak for different reasons, such as:
Hard-coded (i.e., static and unchangeable by the administrator)
Default (i.e., the same static value across different deployments/installations, but able to be changed by the administrator)
Predictable (i.e., generated in a way that produces unique credentials across deployments/installations, but can still be guessed with reasonable efficiency)
Previously Compromised (i.e., "leaked" credentials that were published as part of a data breach)
Mapping guidance
This CWE entry is a Class and might have Base-level children that would be more appropriate
Examine children of this entry to see if there is a better fit
Modes of introduction
By design, authentication protocols try to ensure that attackers must perform brute force attacks if they do not know the credentials such as a key or password. However, when the architecture or implementation includes the use of default or hard-coded passwords, these credentials are easily predictable or even fixed.
Content history
Suggested mappings to ISA/IEC 62443.
Proposed inclusion of already-compromised passwords, leading to modifications of extended description, mitigations, and references
updated Applicable_Platforms, Demonstrative_Examples, Observed_Examples, References
updated References, Relationships
updated Mapping_Notes, Taxonomy_Mappings
updated Observed_Examples, References
updated Observed_Examples
updated References
updated Common_Consequences, Description, Potential_Mitigations, References, Relationships, Weakness_Ordinalities
updated Common_Consequences, Description, Modes_of_Introduction, Technical_Nuance
125 vulnerabilities reference this CWE, most recent first.
CVE-2026-129139 (GCVE-0-2026-129139)
Vulnerability from cvelistv5 – Published: 2026-11-13 17:22 – Updated: 2026-11-13 17:22- CWE-1391 - Use of Weak Credentials
| URL | Tags |
|---|---|
| https://vul.yulun.ac.cn/20261112/paicoding/ | third-party-advisory |
| https://github.com/itwanger/paicoding/issues/137 | issue-tracking |
| https://github.com/itwanger/paicoding/blob/903adc… | technical-description |
| https://github.com/itwanger/paicoding/blob/903adc… | technical-description |
| https://www.vulncheck.com/advisories/paicoding-co… | third-party-advisory |
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CVE-2026-114616 (GCVE-0-2026-114616)
Vulnerability from cvelistv5 – Published: 2026-10-22 21:14 – Updated: 2026-10-30 20:07| URL | Tags |
|---|---|
| https://github.com/authlib/authlib/security/advis… | x_refsource_CONFIRM |
| https://github.com/authlib/authlib/commit/4ff30db… | x_refsource_MISC |
| https://github.com/authlib/authlib/releases/tag/v1.9.1 | x_refsource_MISC |
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CVE-2026-113735 (GCVE-0-2026-113735)
Vulnerability from cvelistv5 – Published: 2026-10-20 23:45 – Updated: 2026-10-21 15:51- CWE-1391 - Use of Weak Credentials
| URL | Tags |
|---|---|
| https://vuldb.com/vuln/422885 | vdb-entrytechnical-description |
| https://vuldb.com/vuln/422885/cti | signaturepermissions-required |
| https://vuldb.com/cve/CVE-2026-113735 | third-party-advisory |
| https://vuldb.com/submit/1015788 | third-party-advisory |
| https://github.com/XueDugu/dlink-dcs6501lh-predic… | related |
| https://github.com/XueDugu/dlink-dcs6501lh-predic… | exploit |
| https://www.dlink.com/ | broken-linkproduct |
| Vendor | Product | Version | |
|---|---|---|---|
| D-Link | DCS-6501LH |
Affected:
3.03.02
cpe:2.3:h:d-link:dcs-6501lh:*:*:*:*:*:*:*:* |
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CVE-2026-109321 (GCVE-0-2026-109321)
Vulnerability from cvelistv5 – Published: 2026-10-12 16:05 – Updated: 2026-10-18 12:13- CWE-1391 - Use of Weak Credentials
| URL | Tags |
|---|---|
| https://github.com/getgrav/grav/security/advisori… | vendor-advisorythird-party-advisory |
| https://www.vulncheck.com/advisories/grav-login-o… | third-party-advisory |
| Vendor | Product | Version | |
|---|---|---|---|
| getgrav | grav-plugin-login-oauth |
Affected:
1.0.0-beta.1 , < 1.4.3
(semver)
Unaffected: 1.4.3 (semver) |
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CVE-2026-107828 (GCVE-0-2026-107828)
Vulnerability from cvelistv5 – Published: 2026-10-08 21:51 – Updated: 2026-10-09 14:49- CWE-1391 - Use of Weak Credentials
| URL | Tags |
|---|---|
| https://github.com/banq/jivejdon/issues/28 | issue-tracking |
| https://github.com/banq/jivejdon | product |
| https://github.com/banq/jivejdon/blob/ee67a65e652… | technical-description |
| https://github.com/banq/jivejdon/blob/ee67a65e652… | technical-description |
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CVE-2026-107153 (GCVE-0-2026-107153)
Vulnerability from cvelistv5 – Published: 2026-10-14 05:12 – Updated: 2026-10-14 16:04 Unsupported When Assigned- CWE-1391 - Use of weak credentials
| Vendor | Product | Version | |
|---|---|---|---|
| Rakuten Mobile, Inc. | Rakuten Mini |
Affected:
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|
|
| Rakuten Mobile, Inc. | Rakuten Hand |
Affected:
all versions
|
|
| Rakuten Mobile, Inc. | Rakuten Hand 5G |
Affected:
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|
|
| Rakuten Mobile, Inc. | Rakuten BIGs |
Affected:
all versions
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CVE-2026-100299 (GCVE-0-2026-100299)
Vulnerability from cvelistv5 – Published: 2026-09-29 19:52 – Updated: 2026-09-29 21:01- CWE-1391 - Use of Weak Credentials
| URL | Tags |
|---|---|
| https://www.cisa.gov/news-events/ics-advisories/i… | government-resource |
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CVE-2026-88761 (GCVE-0-2026-88761)
Vulnerability from cvelistv5 – Published: 2026-09-24 19:55 – Updated: 2026-09-25 16:29{
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CVE-2026-79679 (GCVE-0-2026-79679)
Vulnerability from cvelistv5 – Published: 2026-09-03 11:27 – Updated: 2026-09-03 12:10- CWE-1391 - Use of Weak Credentials
| Vendor | Product | Version | |
|---|---|---|---|
| B&R Industrial Automation GmbH | mapp Services |
Affected:
0 , < 6.8.0
(custom)
|
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CVE-2026-66409 (GCVE-0-2026-66409)
Vulnerability from cvelistv5 – Published: 2026-08-10 08:04 – Updated: 2026-08-10 18:05- CWE-1391 - Use of weak credentials
| Vendor | Product | Version | |
|---|---|---|---|
| ECOVACS ROBOTICS | DEEBOT PRO M1 |
Affected:
0 , < M1-1.7.27
(semver)
|
|
| ECOVACS ROBOTICS | DEEBOT PRO K1VAC |
Affected:
0 , < V1.7.821
(semver)
|
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Mitigation
When the user changes or sets a password, check the password against a database of already compromised or breached passwords. These passwords are likely to be used in password guessing attacks.
No CAPEC attack patterns related to this CWE.