CWE-331 · weakness in Cryptography
Insufficient Entropy
128 CVEs
Out of date: the sync last ran 5 hours ago. Newer CVEs and scores may be missing from the map.
Every dot is a CVE; the named ones are the most at risk. Red is exploited in the wild.
- likely to be exploited
- 3
Every one of the 128 is a mark on the map. Named now: 1 to 26, most at risk first.
- 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; a…
- 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 incomplet…
- DNN (aka DotNetNuke) 9.2 through 9.2.1 incorrectly converts encryption key source values, resulting in lower than expected entropy.
- 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.
- ntp-keygen in ntp 4.2.8px before 4.2.8p2-RC2 and 4.3.x before 4.3.12 does not generate MD5 keys with sufficient entropy on big endian machines when the lowest order byte of the te…
- The GENERATE_SEED macro in PHP 4.x before 4.4.8 and 5.x before 5.2.5, when running on 64-bit systems, performs a multiplication that generates a portion of zero bits during conver…
- hostapd before 2.6, in EAP mode, makes calls to the rand() and random() standard library functions without any preceding srand() or srandom() call, which results in inappropriate…
- 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 interfa…
- The POWER9 backend in GNU Compiler Collection (GCC) before version 10 could optimize multiple calls of the __builtin_darn intrinsic into a single call, thus reducing the entropy o…
- node-uuid before 1.4.4 uses insufficiently random data to create a GUID, which could make it easier for attackers to have unspecified impact via brute force guessing.
- D-Link DCS-6517/DCS-7517 Root Password Generation httpd generate_pass_from_mac entropy
- Cryptocat before 2.0.22: Cryptocat.random() Function Array Key has Entropy Weakness
- Apache OpenOffice Weak Master Keys
- Pallets Werkzeug before 0.15.3, when used with Docker, has insufficient debugger PIN randomness because Docker containers share the same machine id.
- totd 1.5.3 uses a fixed UDP source port in upstream queries sent to DNS resolvers. This allows DNS cache poisoning because there is not enough entropy to prevent traffic injection…
- wolfSSL and wolfCrypt 4.1.0 and earlier (formerly known as CyaSSL) generate biased DSA nonces. This allows a remote attacker to compute the long term private key from several hund…
- Rancher: Non-random authentication token
- reset.php in DomainMOD 4.13.0 uses insufficient entropy for password reset requests, leading to account takeover.
- 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 abl…
- ValiCert Enterprise Validation Authority (EVA) Administration Server 3.3 through 4.2.1 uses insufficiently random data to (1) generate session tokens for HSMs using the C rand fun…
- 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…
- Dell VNX2 OE for File versions 8.1.21.266 and earlier, contain an authentication bypass vulnerability. A remote unauthenticated attacker may exploit this vulnerability by forging…
- Post Oak Bluetooth Traffic Systems Insufficient Entropy
- Lemur 0.1.4 does not use sufficient entropy in its IV when encrypting AES in CBC mode.
- Session / Password / Password token leak
- Insufficient randomness in github.com/Masterminds/goutils
exploited in the wildcheck availableringed, named or not: CyberSIXT has reported on it
Zoom in on the map and the dots under the middle of it are named where they are.
Data as of 2026-11-14. CVE List through 2026-11-14 · EPSS of 2026-11-13 · CISA KEV checked 2026-11-14. Sources: the CVE List, CISA KEV, EPSS, NVD, nuclei templates and public bug bounty data.