Weakness (CWE)
CWE-331: 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.
How to prevent it (1 mitigation)
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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.
Source: MITRE CWE-331
123 results · Feed
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High 7.8CVE-2026-92209 Public exploit
NoMachine Redis Improper Authentication Local Privilege Escalation Vulnerability
NoMachine Redis Improper Authentication Local Privilege Escalation Vulnerability. This vulnerability allows local attackers to escalate privileges on affected installations of NoMachine. An attacker must first obtain the ability to execute low-privileged code…
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Low 3.7
diem-project diem dmString.php random weak prng
A vulnerability was identified in diem-project diem up to 116974edfb9a5b8bd69cb13586dc62bcdbb485ad. This vulnerability affects the function dmString::random of the file dmCorePlugin/lib/basic/dmString.php. Such manipulation leads to cryptographically weak prn…
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Critical 9.8
An insufficient entropy vulnerability in login logic in Synology DiskStation Manager (DSM) before 7.2.1-69057-12, 7.2.2…
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High 8.1
LangBot before 4.10.11 Authentication Bypass via Weak Recovery Key
LangBot before 4.10.11 generates password recovery keys with only 24 bits of entropy and applies no rate limiting to the unauthenticated reset-password endpoint. Remote attackers knowing the administrator email can exhaust the keyspace through concurrent requ…
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Medium 4.7
Dell SCG 5.0 Appliance versions prior to 5.36.00.16 and Dell SCG 5.0 Application versions prior to 5.36.00.00, contains…
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High 7.4
A vulnerability has been identified in Reyrolle 7SR5 (All versions < V2.70). A session identifier is generated using an…
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High 7.5
Combodo iTop: Weak secret generation for inline image
Combodo iTop is a web based IT service management tool. Prior to 3.2.3, inline images that are accessible without being authenticated are protected by a weak 24-bit pseudo-random secret. This issue has been fixed in version 3.2.3.
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Medium 5.1
Power System Insufficient Entropy
IBM PowerVM Hypervisor Platform KeyStore (PKS) and virtual TPM FW1110.00 through FW1110.20, FW1060.00 through FW1060.71, and FW950.00 through FW950.H2 use persistent storage key seeds that result in an AES key with reduced strength. An attacker with access to…
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Medium 5.3
Power System Insufficient Entropy
IBM PowerVM Hypervisor FW1110.00 through FW1110.20, FW1060.00 through FW1060.71, and FW950.00 through FW950.H2 could allow a local attacker with administrative privileges to decrypt encrypted data due to certain hypervisor calls utilizing less entropy than re…
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Low 3.7
pkp pkp-lib API Key Generation APIProfileForm.php setData entropy
A weakness has been identified in pkp pkp-lib 3.3.0/3.4.0/3.5.0. This vulnerability affects the function setData of the file classes/user/form/APIProfileForm.php of the component API Key Generation. Executing a manipulation of the argument apiKey can lead to …
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Low 3.7
Tenda CH7 Kylin Web Service CWebSessionManager_ParseSession entropy
A security vulnerability has been detected in Tenda CH7, CH7G, CH10, CP3, CP3 Pro, CP7, TC3B14C, TC3B15C, TC3T14C and TC3T15C up to 20260625. Affected is the function CWebSessionManager_ParseSession of the file /user/bin/Kylin of the component Kylin Web Servi…
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Critical 9.0CVE-2026-71851 Public exploit
crypto-js: Insufficient Entropy in Cryptographic Secret Generation via Vulnerable CryptoJS Dependency Chain
crypto-js is a JavaScript library of crypto standards. Versions of crypto-js prior to 4.0.0 generate randomness in CryptoJS.lib.WordArray.random() using a custom variation of the Multiply-With-Carry pseudorandom number generator, seeded from Math.random(), in…
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Medium 6.9
Weak Session Key Generation in TP-Link Omada Adoption Protocol
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 succe…
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Critical 9.8
osTicket 1.18.3 generates API keys using a predictable construction based on MD5 hashing. The use of MD5, combined with…
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Medium 4.2
This Power System update is being released to address Insufficient Entropy
IBM PowerVM Hypervisor FW1110.00 through FW1110.20, and FW1060.00 through FW1060.71 could allow an attacker with physical access to the Transparent Memory Encryption (TME) hardware to decrypt encrypted memory due to insufficient cryptographic entropy.
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High 8.7
Nexus Repository Manager - Insufficient Entropy in Format-Specific API Key Generation
A vulnerability in Sonatype Nexus Repository Manager's format-specific API key generation may allow a remote attacker to gain unauthorized access to repository operations as a targeted user. A format-specific API key realm (NuGet API Key, Docker Bearer Token,…
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Medium 5.1
Insufficient Entropy in Raspberry Pi 5 and Compute Module 5
EEPROM firmware on Raspberry Pi 5 and Compute Module 5 devices produced non-random KASLR and RNG seed values. This resulted in consistent kernel addresses across boots and devices, potentially making it easier to exploit other vulnerabilities. Additionally, t…
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High 7.1
DPA Countermeasures weakening on Series 3 devices
SYMCRYPTO is the SiXG301's host side hardware engine accessed by PSA crypto library that accelerates symmetric cryptographic operations (AES encryption/decryption and hashing). DPA Countermeasures on SYMCRYPTO can be weakened (reduced entropy) by forcing cert…
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High 7.5
Authen::TOTP versions before 0.1.1 for Perl generate secrets using rand
Authen::TOTP versions before 0.1.1 for Perl generate secrets using rand. Secrets were generated using Perl's built-in rand function, which is predictable and unsuitable for security usage.
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High 7.3
Crypt::DSA versions before 1.20 for Perl generate seeds using rand
Crypt::DSA versions before 1.20 for Perl generate seeds using rand. Seeds were generated using Perl's built-in rand function, which is predictable and unsuitable for security usage.
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High 7.5
Trog::TOTP versions before 1.006 for Perl generate secrets using rand
Trog::TOTP versions before 1.006 for Perl generate secrets using rand. Secrets were generated using Perl's built-in rand function, which is predictable and unsuitable for security usage.
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Critical 9.3
Magento LTS: Weak API Session ID — Predictable MD5 of Time-Derived Inputs
Magento Long Term Support (LTS) is an unofficial, community-driven project provides an alternative to the Magento Community Edition e-commerce platform with a high level of backward compatibility. Prior to 20.18.0, the XML-RPC / SOAP API session ID is generat…
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Medium 4.1
Insufficient DPA countermeasure reseeding
* 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.
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High 8.7
Insufficient Entropy vulnerability on Multiple Products
CWE‑331: Insufficient Entropy vulnerability exists that could lead to unauthorized access when an attacker on the network can exploit weaknesses in session‑management protections.
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Medium 6.3
The expat and elementtree parsers use insufficient entropy for XML hash-flooding protection
`xml.parsers.expat` and `xml.etree.ElementTree` use insufficient entropy for Expat hash-flooding protection, which allows a crafted XML document to trigger hash flooding.\r\n\r\nFully mitigating this vulnerability requires both updating libexpat to 2.8.0 or l…
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High 8.7
Weak webstax_auth Cookie Authentication Allows Privilege Escalation
A privilege escalation vulnerability in Microchip IStaX allows an authenticated low-privileged user to recover a shared per-device cookie secret from their own webstax_auth session cookie and forge a new cookie with administrative privileges.This issue affect…
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Low 2.9
libexpat before 2.8.0 uses insufficient entropy, and thus hash flooding can occur via a crafted XML document.
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High 8.2
Auth0 Symfony SDK has Insufficient Entropy in Cookie Encryption
### Impact In applications built with the Auth0 PHP SDK, cookies are encrypted with insufficient entropy, which may result in threat actors brute-forcing the encryption key and forging session cookies. ### Am I Affected? Consumers are affected if their applic…
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High 8.2
Auth0 WordPress Plugin has Insufficient Entropy in Cookie Encryption
### Impact In applications built with the Auth0 PHP SDK, cookies are encrypted with insufficient entropy, which may result in threat actors brute-forcing the encryption key and forging session cookies. ### Am I Affected? Consumers are affected if their applic…
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High 8.2
Auth0 laravel-auth0 SDK has Insufficient Entropy in Cookie Encryption
### Impact In applications built with the Auth0 PHP SDK, cookies are encrypted with insufficient entropy, which may result in threat actors brute-forcing the encryption key and forging session cookies. ### Am I Affected? You are affected if you meet the follo…
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High 8.2
Auth0 PHP SDK Insufficient Entropy in Cookie Encryption
Auth0-PHP is a PHP SDK for Auth0 Authentication and Management APIs. From version 8.0.0 to before version 8.19.0, in applications built with the Auth0 PHP SDK, cookies are encrypted with insufficient entropy, which may result in threat actors brute-forcing th…
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High —
libcrux has All-Zero Key Generation Upon Catastrophic RNG Failure
The libcrux-ed25519 key generation samples Ed25519 secret keys from a provided CSPRNG in a loop for up to 100 attempts until a non-zero key is found. If a non-zero key could not be sampled within 100 attempts the key generation function would silently continu…
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Medium 5.3
Insufficient Entropy Vulnerability in Telerik UI for ASP.NET AJAX
In Progress® Telerik® UI for AJAX, versions prior to 2026.1.225, an insufficient entropy vulnerability exists in RadAsyncUpload, where a predictable temporary identifier, based on timestamp and filename, can enable collisions and file content tampering.
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Medium 4.8
Glibc: vdso getrandom acceleration may return predictable randomness
An insufficient entropy vulnerability was found in glibc. The getrandom and arc4random family of functions may return predictable randomness if these functions are called again after the fork, which happens concurrently with a call to any of these functions.
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Medium 6.4
Micca KE700 Brute-force vulnerability due to low entropy
The Micca KE700 system relies on a 6-bit portion of an identifier for authentication within rolling codes, providing only 64 possible combinations. This low entropy allows an attacker to perform a brute-force attack against one component of the rolling code. …
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Low 1.0
DPA countermeasures not reseeded under certain conditions
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.
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Medium 6.8CVE-2026-1814 Public exploit
Rapid7 Nexpose Insecure Java Keystore Password Generation
Rapid7 Nexpose versions 6.4.50 and later are vulnerable to an insufficient entropy issue in the CredentialsKeyStorePassword.generateRandomPassword() method. When updating legacy keystore passwords, the application generates a new password with insufficient le…
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High 7.7
Insecure Encryption in Communication with the Web Interface on TP-Link VX800v
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…
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High 8.7
RustCrypto SM2-PKE has 32-bit Biased Nonce Vulnerability
RustCrypto: Elliptic Curves is general purpose Elliptic Curve Cryptography (ECC) support, including types and traits for representing various elliptic curve forms, scalars, points, and public/secret keys composed thereof. In versions 0.14.0-pre.0 and 0.14.0-r…
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Critical 9.8
Arteco Web Client DVR/NVR Session ID Brute Force Authentication Bypass
Arteco Web Client DVR/NVR contains a session hijacking vulnerability with insufficient session ID complexity that allows remote attackers to bypass authentication. Attackers can brute force session IDs within a specific numeric range to obtain valid sessions …