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CWE-331

134 CVEs • Abstraction: Base

Insufficient Entropy

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.

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CVEs (134)

CVE
VENDORS
PRODUCTS
UPDATED
PUBLISHED
CVSS
1Steve Community
1Steve
Jun 17, 2026
Feb 13, 2024
N/A· v4
7.5 HIGH· v3
N/A· v2
SteVe v3.6.0 was discovered to use predictable transaction ID's when receiving a StartTransaction request. This vulnerability can allow attackers to cause a Denial of Service (DoS) by using the predicted transaction ID's...Show more
SteVe v3.6.0 was discovered to use predictable transaction ID's when receiving a StartTransaction request. This vulnerability can allow attackers to cause a Denial of Service (DoS) by using the predicted transaction ID's to terminate other transactions.Show less
1Wwbn
1Avideo
Jun 17, 2026
Jan 10, 2024
N/A· v4
9.8 CRITICAL· v3
N/A· v2
An insufficient entropy vulnerability exists in the salt generation functionality of WWBN AVideo dev master commit 15fed957fb. A specially crafted series of HTTP requests can lead to privilege escalation. An attacker can...Show more
An insufficient entropy vulnerability exists in the salt generation functionality of WWBN AVideo dev master commit 15fed957fb. A specially crafted series of HTTP requests can lead to privilege escalation. An attacker can gather system information via HTTP requests and brute force the salt offline, leading to forging a legitimate password recovery code for the admin user.Show less
1Github
1Enterprise Server
Jun 17, 2026
Dec 21, 2023
N/A· v4
7.5 HIGH· v3
N/A· v2
An insufficient entropy vulnerability was identified in GitHub Enterprise Server (GHES) that allowed an attacker to brute force a user invitation to the GHES Management Console. To exploit this vulnerability, an attacker...Show more
An insufficient entropy vulnerability was identified in GitHub Enterprise Server (GHES) that allowed an attacker to brute force a user invitation to the GHES Management Console. To exploit this vulnerability, an attacker would need knowledge that a user invitation was pending. This vulnerability affected all versions of GitHub Enterprise Server since 3.8 and was fixed in version 3.8.12, 3.9.7, 3.10.4, and 3.11.1. This vulnerability was reported via the GitHub Bug Bounty program. Show less
1Pubnub
4C Core
KotlinPubnub+1 more
Jun 17, 2026
Dec 6, 2023
N/A· v4
5.9 MEDIUM· v3
N/A· v2
Versions of the package pubnub before 7.4.0; all versions of the package com.pubnub:pubnub; versions of the package pubnub before 6.19.0; all versions of the package github.com/pubnub/go; versions of the package github.c...Show more
Versions of the package pubnub before 7.4.0; all versions of the package com.pubnub:pubnub; versions of the package pubnub before 6.19.0; all versions of the package github.com/pubnub/go; versions of the package github.com/pubnub/go/v7 before 7.2.0; versions of the package pubnub before 7.3.0; versions of the package pubnub/pubnub before 6.1.0; versions of the package pubnub before 5.3.0; versions of the package pubnub before 0.4.0; versions of the package pubnub/c-core before 4.5.0; versions of the package com.pubnub:pubnub-kotlin before 7.7.0; versions of the package pubnub/swift before 6.2.0; versions of the package pubnub before 5.2.0; versions of the package pubnub before 4.3.0 are vulnerable to Insufficient Entropy via the getKey function, due to inefficient implementation of the AES-256-CBC cryptographic algorithm. The provided encrypt function is less secure when hex encoding and trimming are applied, leaving half of the bits in the key always the same for every encoded message or file. **Note:** In order to exploit this vulnerability, the attacker needs to invest resources in preparing the attack and brute-force the encryption.Show less
1Selinc
1Sel 451 Firmware
Jun 17, 2026
Nov 30, 2023
N/A· v4
9.8 CRITICAL· v3
N/A· v2
An Insufficient Entropy vulnerability in the Schweitzer Engineering Laboratories SEL-451 could allow an unauthenticated remote attacker to brute-force session tokens and bypass authentication.  See product Instruction...Show more
An Insufficient Entropy vulnerability in the Schweitzer Engineering Laboratories SEL-451 could allow an unauthenticated remote attacker to brute-force session tokens and bypass authentication.  See product Instruction Manual Appendix A dated 20230830 for more details. Show less
1Jose4j Project
1Jose4j
Jun 17, 2026
Oct 25, 2023
N/A· v4
7.5 HIGH· v3
N/A· v2
jose4j before v0.9.3 allows attackers to set a low iteration count of 1000 or less.
1Qnap
2Qts
Quts Hero
Jun 17, 2026
Aug 24, 2023
N/A· v4
5.3 MEDIUM· v3
N/A· v2
An insufficient entropy vulnerability has been reported to affect QNAP operating systems. If exploited, the vulnerability possibly allows remote users to predict secret via unspecified vectors. We have already fixed the...Show more
An insufficient entropy vulnerability has been reported to affect QNAP operating systems. If exploited, the vulnerability possibly allows remote users to predict secret via unspecified vectors. We have already fixed the vulnerability in the following versions: QTS 5.0.1.2425 build 20230609 and later QTS 5.1.0.2444 build 20230629 and later QuTS hero h5.1.0.2424 build 20230609 and later Show less
1Broadcom
1Raid Controller Web Interface
Jun 17, 2026
Aug 15, 2023
N/A· v4
9.8 CRITICAL· v3
N/A· v2
Broadcom RAID Controller web interface is vulnerable to insufficient randomness due to improper use of ssl.rnd to setup CIM connection
1Rws
1Worldserver
Jun 17, 2026
Aug 1, 2023
N/A· v4
5.3 MEDIUM· v3
N/A· v2
Session tokens in RWS WorldServer 11.7.3 and earlier have a low entropy and can be enumerated, leading to unauthorized access to user sessions.
1Ovarro
5Tbox Lt2 Firmware
Tbox Ms Cpu32 S2 FirmwareTbox Ms Cpu32 Firmware+2 more
Jun 17, 2026
Jul 3, 2023
N/A· v4
5.9 MEDIUM· v3
N/A· v2
​The affected TBox RTUs generate software security tokens using insufficient entropy. The random seed used to generate the software tokens is not initialized correctly, and other parts of the token are generated using p...Show more
​The affected TBox RTUs generate software security tokens using insufficient entropy. The random seed used to generate the software tokens is not initialized correctly, and other parts of the token are generated using predictable time-based values. An attacker with this knowledge could successfully brute force the token and authenticate themselves. Show less
1Cmscommander
1Cms Commander
Jun 17, 2026
Jun 20, 2023
N/A· v4
9.8 CRITICAL· v3
N/A· v2
The CMS Commander plugin for WordPress is vulnerable to authorization bypass due to the use of an insufficiently unique cryptographic signature on the 'cmsc_add_site' function in versions up to, and including, 2.287. Thi...Show more
The CMS Commander plugin for WordPress is vulnerable to authorization bypass due to the use of an insufficiently unique cryptographic signature on the 'cmsc_add_site' function in versions up to, and including, 2.287. This makes it possible for unauthenticated attackers to the plugin to change the '_cmsc_public_key' in the plugin config, providing access to the plugin's remote control functionalities, such as creating an admin access URL, which can be used for privilege escalation. This can only be exploited if the plugin has not been configured yet, however, if combined with another arbitrary plugin installation and activation vulnerability, the impact can be severe.Show less
1Crypto Js Project
1Crypto Js
Jun 17, 2026
Jun 12, 2023
N/A· v4
5.3 MEDIUM· v3
N/A· v2
The crypto-js package before 3.2.1 for Node.js generates random numbers by concatenating the string "0." with an integer, which makes the output more predictable than necessary.
1Cisco
2Adaptive Security Appliance
Firepower Threat Defense
Jun 17, 2026
Mar 23, 2023
N/A· v4
7.5 HIGH· v3
N/A· v2
A vulnerability in the deterministic random bit generator (DRBG), also known as pseudorandom number generator (PRNG), in Cisco Adaptive Security Appliance (ASA) Software and Cisco Firepower Threat Defense (FTD) Software...Show more
A vulnerability in the deterministic random bit generator (DRBG), also known as pseudorandom number generator (PRNG), in Cisco Adaptive Security Appliance (ASA) Software and Cisco Firepower Threat Defense (FTD) Software for Cisco ASA 5506-X, ASA 5508-X, and ASA 5516-X Firewalls could allow an unauthenticated, remote attacker to cause a cryptographic collision, enabling the attacker to discover the private key of an affected device. This vulnerability is due to insufficient entropy in the DRBG for the affected hardware platforms when generating cryptographic keys. An attacker could exploit this vulnerability by generating a large number of cryptographic keys on an affected device and looking for collisions with target devices. A successful exploit could allow the attacker to impersonate an affected target device or to decrypt traffic secured by an affected key that is sent to or from an affected target device.Show less
1Suse
1Rancher
Jun 17, 2026
Feb 7, 2023
N/A· v4
9.8 CRITICAL· v3
N/A· v2
A Insufficient Entropy vulnerability in SUSE Rancher allows attackers that gained knowledge of the cattle-token to continue abusing this even after the token was renewed. This issue affects: SUSE Rancher Rancher versions...Show more
A Insufficient Entropy vulnerability in SUSE Rancher allows attackers that gained knowledge of the cattle-token to continue abusing this even after the token was renewed. This issue affects: SUSE Rancher Rancher versions prior to 2.6.10; Rancher versions prior to 2.7.1.Show less
1Goutils Project
1Goutils
Jun 17, 2026
Dec 27, 2022
N/A· v4
9.1 CRITICAL· v3
N/A· v2
Randomly-generated alphanumeric strings contain significantly less entropy than expected. The RandomAlphaNumeric and CryptoRandomAlphaNumeric functions always return strings containing at least one digit from 0 to 9. Thi...Show more
Randomly-generated alphanumeric strings contain significantly less entropy than expected. The RandomAlphaNumeric and CryptoRandomAlphaNumeric functions always return strings containing at least one digit from 0 to 9. This significantly reduces the amount of entropy in short strings generated by these functions.Show less
1Phpservermonitor
1Php Server Monitor
Jun 17, 2026
Nov 15, 2022
N/A· v4
5.3 MEDIUM· v3
N/A· v2
A vulnerability, which was classified as problematic, was found in phpservermon. Affected is the function setUserLoggedIn of the file src/psm/Service/User.php. The manipulation leads to use of predictable algorithm in ra...Show more
A vulnerability, which was classified as problematic, was found in phpservermon. Affected is the function setUserLoggedIn of the file src/psm/Service/User.php. The manipulation leads to use of predictable algorithm in random number generator. The exploit has been disclosed to the public and may be used. The name of the patch is bb10a5f3c68527c58073258cb12446782d223bc3. It is recommended to apply a patch to fix this issue. The identifier of this vulnerability is VDB-213744.Show less
1Phpservermonitor
1Php Server Monitor
Jun 17, 2026
Nov 15, 2022
N/A· v4
5.3 MEDIUM· v3
N/A· v2
A vulnerability, which was classified as problematic, was found in phpservermon. This affects the function generatePasswordResetToken of the file src/psm/Service/User.php. The manipulation leads to use of predictable alg...Show more
A vulnerability, which was classified as problematic, was found in phpservermon. This affects the function generatePasswordResetToken of the file src/psm/Service/User.php. The manipulation leads to use of predictable algorithm in random number generator. The exploit has been disclosed to the public and may be used. The name of the patch is 3daa804d5f56c55b3ae13bfac368bb84ec632193. It is recommended to apply a patch to fix this issue. The identifier VDB-213717 was assigned to this vulnerability.Show less
1Cisco
1Secure Firewall Management Center
Jun 17, 2026
Nov 15, 2022
N/A· v4
5.3 MEDIUM· v3
N/A· v2
A vulnerability in the web-based management interface of Cisco Firepower Management Center (FMC) Software could allow an unauthenticated, remote attacker to access sensitive information. This vulnerability is due to m...Show more
A vulnerability in the web-based management interface of Cisco Firepower Management Center (FMC) Software could allow an unauthenticated, remote attacker to access sensitive information. This vulnerability is due to missing authorization for certain resources in the web-based management interface together with insufficient entropy in these resource names. An attacker could exploit this vulnerability by sending a series of HTTPS requests to an affected device to enumerate resources on the device. A successful exploit could allow the attacker to retrieve sensitive information from the device.Show less
1Zyxel
10Gs1900 10hp Firmware
Gs1900 16 FirmwareGs1900 24 Firmware+7 more
Jun 17, 2026
Sep 20, 2022
N/A· v4
5.9 MEDIUM· v3
N/A· v2
An insufficient entropy vulnerability caused by the improper use of randomness sources with low entropy for RSA key pair generation was found in Zyxel GS1900 series firmware versions prior to V2.70. This vulnerability co...Show more
An insufficient entropy vulnerability caused by the improper use of randomness sources with low entropy for RSA key pair generation was found in Zyxel GS1900 series firmware versions prior to V2.70. This vulnerability could allow an unauthenticated attacker to retrieve a private key by factoring the RSA modulus N in the certificate of the web administration interface.Show less
1Dproxy Nexgen Project
1Dproxy Nexgen
Jun 17, 2026
Aug 15, 2022
N/A· v4
5.3 MEDIUM· v3
N/A· v2
dproxy-nexgen (aka dproxy nexgen) uses a static UDP source port (selected randomly only at boot time) in upstream queries sent to DNS resolvers. This allows DNS cache poisoning because there is not enough entropy to prev...Show more
dproxy-nexgen (aka dproxy nexgen) uses a static UDP source port (selected randomly only at boot time) in upstream queries sent to DNS resolvers. This allows DNS cache poisoning because there is not enough entropy to prevent traffic injection attacks.Show less