Common Weakness Enumeration
CWE-331
AllowedInsufficient Entropy
Abstraction: Base · Status: Draft
The product uses an algorithm or scheme that produces insufficient entropy, leaving patterns or clusters of values that are more likely to occur than others.
88 vulnerabilities reference this CWE, most recent first.
CVE-2025-27551 (GCVE-0-2025-27551)
Vulnerability from cvelistv5 – Published: 2025-03-26 11:07 – Updated: 2025-09-05 13:20
VLAI
EPSS
VEX
Title
DBIx::Class::EncodedColumn until 0.00032 for Perl uses insecure rand() function for salting password hashes in Digest.pm
Summary
DBIx::Class::EncodedColumn use the rand() function, which is not cryptographically secure to salt password hashes.
This vulnerability is associated with program files lib/DBIx/Class/EncodedColumn/Digest.pm.
This issue affects DBIx::Class::EncodedColumn until 0.00032.
Severity
4 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-03-26 19:17 UTC
CWE
Assigner
CPANSec
CNA
References
2 references
| URL | Tags |
|---|---|
| https://security.metacpan.org/docs/guides/random-… | related |
| https://metacpan.org/release/WREIS/DBIx-Class-Enc… | release-notes |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| WREIS | DBIx::Class::EncodedColumn |
Affected:
0 , < 0.00032
(custom)
|
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CVE-2025-15629 (GCVE-0-2025-15629)
Vulnerability from cvelistv5 – Published: 2026-08-03 17:50 – Updated: 2026-08-03 18:32
VLAI
EPSS
VEX
Title
Weak Session Key Generation in TP-Link Omada Adoption Protocol
Summary
A cryptographic
weakness exists in the Omada adoption protocol where session encryption keys
used to protect communications between controllers and managed devices may be
predictable due to insufficient entropy in session key generation.
An attacker
who successfully intercepts adoption-related communications may be able to recover
session encryption keys and decrypt affected communications.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-03 18:30 UTC
CWE
- CWE-331 - Insufficient entropy
Assigner
TPLink
CNA
References
3 references
| URL | Tags |
|---|---|
| https://www.omadanetworks.com/us/support/download/ | patch |
| https://www.omadanetworks.com/en/support/download/ | patch |
| https://www.tp-link.com/us/support/faq/5216/ | vendor-advisory |
Impacted products
4 products
| Vendor | Product | Version | |
|---|---|---|---|
| TP-Link Systems Inc. | Omada Gateways |
Affected:
0
(custom)
|
|
| TP-Link Systems Inc. | Omada Switches |
Affected:
0
(custom)
|
|
| TP Link Systems Inc. | Omada Access Points |
Affected:
0
(custom)
|
|
| TP-Link Systems Inc | Omada Controllers |
Affected:
0
(custom)
|
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CVE-2025-15387 (GCVE-0-2025-15387)
Vulnerability from cvelistv5 – Published: 2025-12-31 08:23 – Updated: 2025-12-31 16:05
VLAI
EPSS
VEX
Title
QNO Technology｜VPN Firewall - Insufficient Entropy
Summary
VPN Firewall developed by QNO Technology has a Insufficient Entropy vulnerability, allowing unauthenticated remote attackers to obtain any logged-in user session through brute-force attacks and subsequently log into the system.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-12-31 16:05 UTC
CWE
- CWE-331 - Insufficient Entropy
Assigner
twcert
CNA
References
2 references
| URL | Tags |
|---|---|
| https://www.twcert.org.tw/tw/cp-132-10613-e1780-1.html | third-party-advisory |
| https://www.twcert.org.tw/en/cp-139-10614-dee41-2.html | third-party-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| QNO Technology | VPN Firewall |
Affected:
0
(custom)
|
Date Public
2025-12-31 08:18
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CVE-2025-14972 (GCVE-0-2025-14972)
Vulnerability from cvelistv5 – Published: 2026-05-15 14:35 – Updated: 2026-05-15 15:40
VLAI
EPSS
VEX
Title
Insufficient DPA countermeasure reseeding
Summary
* Countermeasures for DPA within SYMCRYPTO
engine on SixG301xxx devices are not sufficiently random and will
eventually repeat.
* KSU keys using SYMCRYPTO will be
impacted by this vulnerability.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-05-15 15:40 UTC
CWE
- CWE-331 - Insufficient entropy
Assigner
Silabs
CNA
References
1 reference
| URL | Tags |
|---|---|
| https://community.silabs.com/068Vm00000M3cAX | third-party-advisorypermissions-required |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| silabs.com | Simplicity SDK |
Affected:
0 , ≤ *.*
(semver)
|
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CVE-2025-14261 (GCVE-0-2025-14261)
Vulnerability from cvelistv5 – Published: 2025-12-08 18:12 – Updated: 2025-12-08 18:20
VLAI
EPSS
VEX
Title
Lack of entropy allows registered low-privileged users of Litmus to crack valid JWT tokens and gain admin privileges
Summary
The Litmus platform uses JWT for authentication and authorization, but the secret being used for signing the JWT is only 6 bytes long at its core, which makes it extremely easy to crack.
Severity
7.1 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-12-08 18:20 UTC
CWE
- CWE-331 - Insufficient Entropy
Assigner
JFROG
CNA
References
2 references
| URL | Tags |
|---|---|
| https://research.jfrog.com/vulnerabilities/litmus… | third-party-advisory |
| https://github.com/litmuschaos/litmus/pull/5324 | patch |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Litmuschaos | litmus |
Affected:
0 , < 3.23.0
(custom)
|
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CVE-2025-13399 (GCVE-0-2025-13399)
Vulnerability from cvelistv5 – Published: 2026-01-29 18:05 – Updated: 2026-02-26 15:04
VLAI
EPSS
VEX
Title
Insecure Encryption in Communication with the Web Interface on TP-Link VX800v
Summary
A weakness in the web interface’s application layer encryption in VX800v v1.0 allows an adjacent attacker to brute force the weak AES key and decrypt intercepted traffic. Successful exploitation requires network proximity but no authentication, and may result in high impact to confidentiality, integrity, and availability of transmitted data.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-01-30 04:55 UTC
CWE
- CWE-331 - Insufficient Entropy
Assigner
TPLink
CNA
References
2 references
| URL | Tags |
|---|---|
| https://www.tp-link.com/de/support/download/vx800… | patch |
| https://www.tp-link.com/us/support/faq/4930/ | vendor-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| TP-Link Systems Inc. | VX800v v1.0 |
Affected:
0 , < 800.0.11 (0.11.0 3.0.0 v603c.0 Build 250702)
(custom)
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CVE-2025-7432 (GCVE-0-2025-7432)
Vulnerability from cvelistv5 – Published: 2026-02-09 16:07 – Updated: 2026-02-09 16:23
VLAI
EPSS
VEX
Title
DPA countermeasures not reseeded under certain conditions
Summary
DPA countermeasures in Silicon Labs' Series 2 devices are not reseeded under certain conditions.
This may allow an attacker to eventually extract secret keys through a DPA attack.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-02-09 16:23 UTC
CWE
- CWE-331 - Insufficient Entropy
Assigner
Silabs
CNA
References
1 reference
| URL | Tags |
|---|---|
| https://community.silabs.com/068Vm00000b9fBW | vendor-advisorypermissions-required |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| silabs.com | Simplicity SDK |
Affected:
0 , < 2025.12.0
(semver)
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CVE-2025-6931 (GCVE-0-2025-6931)
Vulnerability from cvelistv5 – Published: 2025-06-30 22:32 – Updated: 2025-07-01 13:45 Unsupported When Assigned
VLAI
EPSS
VEX
Title
D-Link DCS-6517/DCS-7517 Root Password Generation httpd generate_pass_from_mac entropy
Summary
A vulnerability classified as problematic was found in D-Link DCS-6517 and DCS-7517 up to 2.02.0. Affected by this vulnerability is the function generate_pass_from_mac of the file /bin/httpd of the component Root Password Generation Handler. The manipulation leads to insufficient entropy. The attack can be launched remotely. The complexity of an attack is rather high. The exploitation appears to be difficult. The exploit has been disclosed to the public and may be used. This vulnerability only affects products that are no longer supported by the maintainer.
Severity
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-07-01 13:45 UTC
Assigner
VulDB
CNA
References
8 references
| URL | Tags |
|---|---|
| https://vuldb.com/?id.314443 | vdb-entrytechnical-description |
| https://vuldb.com/?ctiid.314443 | signaturepermissions-required |
| https://vuldb.com/?submit.605592 | third-party-advisory |
| https://vuldb.com/?submit.605593 | third-party-advisory |
| https://vuldb.com/?submit.605596 | third-party-advisory |
| http://cdn2.v50to.cc/dlink/DCS-6517B1_FW_v2.02.01… | related |
| http://cdn2.v50to.cc/dlink/DCS-7517_B1_FW_v2.02.0… | exploit |
| https://www.dlink.com/ | product |
Impacted products
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CVE-2025-2814 (GCVE-0-2025-2814)
Vulnerability from cvelistv5 – Published: 2025-04-12 23:41 – Updated: 2025-09-05 13:21
VLAI
EPSS
VEX
Title
Crypt::CBC versions between 1.21 and 3.05 for Perl may use insecure rand() function for cryptographic functions
Summary
Crypt::CBC versions between 1.21 and 3.05 for Perl may use the rand() function as the default source of entropy, which is not cryptographically secure, for cryptographic functions.
This issue affects operating systems where "/dev/urandom'" is unavailable. In that case, Crypt::CBC will fallback to use the insecure rand() function.
Severity
4 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-04-14 18:21 UTC
CWE
Assigner
CPANSec
CNA
References
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| LDS | Crypt::CBC |
Affected:
1.21 , ≤ 3.05
(custom)
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CVE-2025-1860 (GCVE-0-2025-1860)
Vulnerability from cvelistv5 – Published: 2025-03-28 00:56 – Updated: 2025-09-05 13:20
VLAI
EPSS
VEX
Title
Data::Entropy for Perl uses insecure rand() function for cryptographic functions
Summary
Data::Entropy for Perl 0.007 and earlier use the rand() function as the default source of entropy, which is not cryptographically secure, for cryptographic functions.
Severity
7.7 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-05-12 15:41 UTC
CWE
Assigner
CPANSec
CNA
References
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| ZEFRAM | Data::Entropy |
Affected:
0 , < 0.008
(custom)
|
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Mitigation
Implementation
Determine the necessary entropy to adequately provide for randomness and predictability. This can be achieved by increasing the number of bits of objects such as keys and seeds.
CAPEC-59: Session Credential Falsification through Prediction
This attack targets predictable session ID in order to gain privileges. The attacker can predict the session ID used during a transaction to perform spoofing and session hijacking.