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CWE-334: Small Space of Random Values

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The number of possible random values is smaller than needed by the product, making it more susceptible to brute force attacks.

What the weakness is: CWE-334 at MITRE. OWASP Top 10: A04:2025 Cryptographic Failures

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Show the promptExplain CWE-334: Small Space of Random Values and how to prevent and detect it in code. Use https://cwe.mitre.org/data/definitions/334.html and https://cve.bz/cve/cwe/334?via=ask-ai-copy for recent CVEs with this weakness. Cite the sources.

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  1. 7.4CVE-2026-122118

    In certain Yealink products before 2026-04-15, when the Wi-Fi AP function is enabled, a default 8-digit numeric PSK with insufficient strength is used. Attackers can exploit this weakness via brute-force attacks to gain unauthorized networ…

  2. 9.0CVE-2026-71851EPSS 0.5%

    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 fr…

  3. 6.9CVE-2024-54017EPSS 0.3%

    A vulnerability has been identified in SIPROTEC 5 6MD84 (CP300) (All versions < V11.0), SIPROTEC 5 6MD85 (CP200) (All versions), SIPROTEC 5 6MD85 (CP300) (All versions >= V7.80 < V11.0), SIPROTEC 5 6MD86 (CP200) (All versions), SIPROTEC 5 …

  4. 9.1CVE-2025-3895EPSS 0.5%

    Token used for resetting passwords in MegaBIP software are generated using a small space of random values combined with a queryable value. It allows an unauthenticated attacker who know user login names to brute force these tokens and cha…

  5. 5.3CVE-2024-52616EPSS 0.7%

    A flaw was found in the Avahi-daemon, where it initializes DNS transaction IDs randomly only once at startup, incrementing them sequentially after that. This predictable behavior facilitates DNS spoofing attacks, allowing attackers to gues…

  6. 4.8CVE-2024-51720EPSS 0.3%

    An insufficient entropy vulnerability in the SecuSUITE Secure Client Authentication (SCA) Server of SecuSUITE versions 5.0.420 and earlier could allow an attacker to potentially enroll an attacker-controlled device to the victim’s account …

  7. 8.8CVE-2024-6890EPSS 0.7%

    Password reset tokens are generated using an insecure source of randomness. Attackers who know the username of the Journyx installation user can bruteforce the password reset and change the administrator password.

  8. 6.6CVE-2023-6951EPSS 0.3%

    A Use of Weak Credentials vulnerability affecting the Wi-Fi network generated by a set of DJI drones could allow a remote attacker to derive the WPA2 PSK key and authenticate without permission to the drone’s Wi- Fi network. This, in turn,…

  9. 7.5CVE-2022-24402EPSS 0.6%

    The TETRA TEA1 keystream generator implements a key register initialization function that compresses the 80-bit key to only 32 bits for usage during the keystream generation phase, which is insufficient to safeguard against exhaustive sear…

  10. 9.8CVE-2023-39979EPSS 1.0%

    There is a vulnerability in MXsecurity versions prior to 1.0.1 that can be exploited to bypass authentication. A remote attacker might access the system if the web service authenticator has insufficient random values.

  11. 5.3CVE-2022-20941EPSS 0.7%

    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 authorizatio…

  12. 5.3CVE-2022-33707EPSS 0.8%

    Improper identifier creation logic in Find My Mobile prior to version 7.2.24.12 allows attacker to identify the device.

  13. 7.5CVE-2022-22517EPSS 1.5%

    An unauthenticated, remote attacker can disrupt existing communication channels between CODESYS products by guessing a valid channel ID and injecting packets. This results in the communication channel to be closed.

  14. 7.5CVE-2021-21955EPSS 1.0%

    An authentication bypass vulnerability exists in the get_aes_key_info_by_packetid() function of the home_security binary of Anker Eufy Homebase 2 2.1.6.9h. Generic network sniffing can lead to password recovery. An attacker can sniff netwo…

  15. 7.3CVE-2020-7566EPSS 0.3%

    A CWE-334: Small Space of Random Values vulnerability exists in Modicon M221 (all references, all versions) that could allow the attacker to break the encryption keys when the attacker has captured the traffic between EcoStruxure Machine -…