VYPR

CWE-331

Insufficient Entropy

BaseDraft

Description

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.

Hierarchy (View 1000)

Parents

Related attack patterns (CAPEC)

CAPEC-59

CVEs mapped to this weakness (138)

page 2 of 7
  • CVE-2026-4827HigMay 12, 2026
    risk 0.57cvss epss 0.00

    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.

  • CVE-2026-2336HigApr 16, 2026
    risk 0.57cvss 8.8epss 0.00

    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 affects IStaX before…

  • CVE-2025-13399HigJan 29, 2026
    risk 0.57cvss 8.8epss 0.00

    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…

  • CVE-2025-15387HigDec 31, 2025
    risk 0.57cvss 8.8epss 0.00

    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.

  • CVE-2025-66565CriDec 9, 2025
    risk 0.57cvss 9.8epss 0.00

    Fiber Utils is a collection of common functions created for Fiber. In versions 2.0.0-rc.3 and below, when the system's cryptographic random number generator (crypto/rand) fails, both functions silently fall back to returning predictable UUID values, including the zero UUID…

  • CVE-2023-49599CriJan 10, 2024
    risk 0.57cvss 9.8epss 0.01

    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…

  • CVE-2022-37401HigAug 15, 2022
    risk 0.57cvss 8.8epss 0.02

    Apache OpenOffice supports the storage of passwords for web connections in the user's configuration database. The stored passwords are encrypted with a single master key provided by the user. A flaw in OpenOffice existed where master key was poorly encoded resulting in weakening…

  • CVE-2018-1000620CriJul 9, 2018
    risk 0.57cvss 9.8epss 0.02

    Eran Hammer cryptiles version 4.1.1 earlier contains a CWE-331: Insufficient Entropy vulnerability in randomDigits() method that can result in An attacker is more likely to be able to brute force something that was supposed to be random.. This attack appear to be exploitable via…

  • CVE-2018-18326HigJul 3, 2019
    risk 0.56cvss 7.5epss 0.54

    DNN (aka DotNetNuke) 9.2 through 9.2.2 incorrectly converts encryption key source values, resulting in lower than expected entropy. NOTE: this issue exists because of an incomplete fix for CVE-2018-15812.

  • CVE-2018-15812HigJul 3, 2019
    risk 0.55cvss 7.5epss 0.47

    DNN (aka DotNetNuke) 9.2 through 9.2.1 incorrectly converts encryption key source values, resulting in lower than expected entropy.

  • CVE-2008-1447MedJul 8, 2008
    risk 0.55cvss 6.8epss 0.95

    The DNS protocol, as implemented in (1) BIND 8 and 9 before 9.5.0-P1, 9.4.2-P1, and 9.3.5-P1; (2) Microsoft DNS in Windows 2000 SP4, XP SP2 and SP3, and Server 2003 SP1 and SP2; and other implementations allow remote attackers to spoof DNS traffic via a birthday attack that uses…

  • CVE-2024-36400CriJun 4, 2024
    risk 0.54cvss 9.4epss 0.01

    nano-id is a unique string ID generator for Rust. Affected versions of the nano-id crate incorrectly generated IDs using a reduced character set in the `nano_id::base62` and `nano_id::base58` functions. Specifically, the `base62` function used a character set of 32 symbols…

  • CVE-2023-46648HigDec 21, 2023
    risk 0.54cvss 8.3epss 0.01

    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.…

  • CVE-2023-37822HigOct 3, 2024
    risk 0.53cvss 8.2epss 0.00

    The Eufy Homebase 2 before firmware version 3.3.4.1h creates a dedicated wireless network for its ecosystem, which serves as a proxy to the end user's primary network. The WPA2-PSK generation of this dedicated network is flawed and solely based on the serial number. Due to the…

  • CVE-2014-8422HigApr 12, 2018
    risk 0.53cvss 8.1epss 0.02

    The web-based management (WBM) interface in Unify (former Siemens) OpenStage SIP and OpenScape Desk Phone IP V3 devices before R3.32.0 generates session cookies with insufficient entropy, which makes it easier for remote attackers to hijack sessions via a brute-force attack.

  • CVE-2017-13992HigOct 5, 2017
    risk 0.53cvss 8.1epss 0.04

    An Insufficient Entropy issue was discovered in LOYTEC LVIS-3ME versions prior to 6.2.0. The application does not utilize sufficiently random number generation for the web interface authentication mechanism, which could allow remote code execution.

  • CVE-2026-71851CriAug 7, 2026
    risk 0.52cvss 9.0epss 0.00

    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(), instead of a…

  • CVE-2024-6508HigAug 21, 2024
    risk 0.52cvss 8.0epss 0.01

    An insufficient entropy vulnerability was found in the Openshift Console. In the authorization code type and implicit grant type, the OAuth2 protocol is vulnerable to a Cross-Site Request Forgery (CSRF) attack if the state parameter is used inefficiently. This flaw allows…

  • CVE-2021-4238CriDec 27, 2022
    risk 0.52cvss 9.1epss 0.01

    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…

  • CVE-2025-1860HigMar 28, 2025
    risk 0.50cvss 7.7epss 0.00

    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.