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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
1Totd Project
1Totd
Jun 17, 2026
Aug 15, 2022
N/A· v4
9.8 CRITICAL· v3
N/A· v2
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 attacks.
1Apache
1Openoffice
Jun 17, 2026
Aug 15, 2022
N/A· v4
8.8 HIGH· v3
N/A· v2
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...Show more
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 its entropy from 128 to 43 bits making the stored passwords vulnerable to a brute force attack if an attacker has access to the users stored config. This issue affects: Apache OpenOffice versions prior to 4.1.13. Reference: CVE-2022-26307 - LibreOfficeShow less
1Embedthis
1Goahead
Jun 17, 2026
Aug 8, 2022
N/A· v4
9.8 CRITICAL· v3
N/A· v2
websda.c in GoAhead WebServer 2.1.8 has insufficient nonce entropy because the nonce calculation relies on the hardcoded onceuponatimeinparadise value, which does not follow the secret-data guideline for HTTP Digest Acce...Show more
websda.c in GoAhead WebServer 2.1.8 has insufficient nonce entropy because the nonce calculation relies on the hardcoded onceuponatimeinparadise value, which does not follow the secret-data guideline for HTTP Digest Access Authentication in RFC 7616 section 3.3 (or RFC 2617 section 3.2.1). NOTE: 2.1.8 is a version from 2003; however, the affected websda.c code appears in multiple derivative works that may be used in 2021. Recent GoAhead software is unaffected.Show less
2Dell
Oracle
6Bsafe Crypto C Micro Edition
Bsafe Micro Edition SuiteDatabase+3 more
Jun 17, 2026
Jul 11, 2022
N/A· v4
9.8 CRITICAL· v3
7.5 HIGH· v2
Dell BSAFE Crypto-C Micro Edition, versions before 4.1.5, and Dell BSAFE Micro Edition Suite, versions before 4.6, contain an Improper Input Validation Vulnerability.
2Dell
Oracle
3Bsafe Crypto C Micro Edition
Bsafe Micro Edition SuiteRetail Customer Insights
Jun 17, 2026
Jul 11, 2022
N/A· v4
7.5 HIGH· v3
5.0 MEDIUM· v2
Dell BSAFE Crypto-C Micro Edition, versions before 4.1.5, and Dell BSAFE Micro Edition Suite, versions before 4.5.2, contain a Key Management Error Vulnerability.
1Openvpn
1Openvpn Access Server
Jun 17, 2026
Jul 6, 2022
N/A· v4
7.5 HIGH· v3
5.0 MEDIUM· v2
OpenVPN Access Server before 2.11 uses a weak random generator used to create user session token for the web portal
1Argoproj
1Argo Cd
Jun 17, 2026
Jun 27, 2022
N/A· v4
8.1 HIGH· v3
6.8 MEDIUM· v2
Argo CD is a declarative, GitOps continuous delivery tool for Kubernetes. All versions of Argo CD starting with v0.11.0 are vulnerable to a variety of attacks when an SSO login is initiated from the Argo CD CLI or UI. Th...Show more
Argo CD is a declarative, GitOps continuous delivery tool for Kubernetes. All versions of Argo CD starting with v0.11.0 are vulnerable to a variety of attacks when an SSO login is initiated from the Argo CD CLI or UI. The vulnerabilities are due to the use of insufficiently random values in parameters in Oauth2/OIDC login flows. In each case, using a relatively-predictable (time-based) seed in a non-cryptographically-secure pseudo-random number generator made the parameter less random than required by the relevant spec or by general best practices. In some cases, using too short a value made the entropy even less sufficient. The attacks on login flows which are meant to be mitigated by these parameters are difficult to accomplish but can have a high impact potentially granting an attacker admin access to Argo CD. Patches for this vulnerability has been released in the following Argo CD versions: v2.4.1, v2.3.5, v2.2.10 and v2.1.16. There are no known workarounds for this vulnerability.Show less
1Broadcom
1Ca Automic Automation
Jun 17, 2026
Jun 16, 2022
N/A· v4
7.5 HIGH· v3
5.0 MEDIUM· v2
CA Automic Automation 12.2 and 12.3 contain an entropy weakness vulnerability in the Automic AutomationEngine that could allow a remote attacker to potentially access sensitive data.
1Schneider Electric
1Software Update
Jun 17, 2026
Jan 28, 2022
N/A· v4
3.8 LOW· v3
2.1 LOW· v2
A CWE-331: Insufficient Entropy vulnerability exists that could cause unintended connection from an internal network to an external network when an attacker manages to decrypt the SESU proxy password from the registry. A...Show more
A CWE-331: Insufficient Entropy vulnerability exists that could cause unintended connection from an internal network to an external network when an attacker manages to decrypt the SESU proxy password from the registry. Affected Product: Schneider Electric Software Update, V2.3.0 through V2.5.1Show less
1Dell
1Emc Unity Operating Environment
Jun 17, 2026
Jan 25, 2022
N/A· v4
9.8 CRITICAL· v3
7.5 HIGH· v2
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 a cookie to login as any user.
1Thalesgroup
1Safenet Windows Logon Agent
Jun 17, 2026
Dec 20, 2021
N/A· v4
6.5 MEDIUM· v3
3.5 LOW· v2
A user of a machine protected by SafeNet Agent for Windows Logon may leverage weak entropy to access the encrypted credentials of any or all the users on that machine.
1Dell
9X1008 Firmware
X1008p FirmwareX1018 Firmware+6 more
Jun 17, 2026
Nov 20, 2021
N/A· v4
9.8 CRITICAL· v3
7.5 HIGH· v2
Dell Networking X-Series firmware versions prior to 3.0.1.8 contain an authentication bypass vulnerability. A remote unauthenticated attacker may potentially hijack a session and access the webserver by forging the sessi...Show more
Dell Networking X-Series firmware versions prior to 3.0.1.8 contain an authentication bypass vulnerability. A remote unauthenticated attacker may potentially hijack a session and access the webserver by forging the session ID.Show less
1Cyberark
1Credential Provider
Jun 17, 2026
Sep 2, 2021
N/A· v4
4.4 MEDIUM· v3
1.9 LOW· v2
The effective key space used to encrypt the cache in CyberArk Credential Provider prior to 12.1 has low entropy, and under certain conditions a local malicious user can obtain the plaintext of cache files.
1Cyberark
1Credential Provider
Jun 17, 2026
Sep 2, 2021
N/A· v4
5.1 MEDIUM· v3
1.9 LOW· v2
The user identification mechanism used by CyberArk Credential Provider prior to 12.1 is susceptible to a local host race condition, leading to password disclosure.
1Hcc Embedded
1Nichestack Tcp/ip
Jun 17, 2026
Aug 18, 2021
N/A· v4
7.5 HIGH· v3
5.0 MEDIUM· v2
The DNS client in InterNiche NicheStack TCP/IP 4.0.1 is affected by: Insufficient entropy in the DNS transaction id. The impact is: DNS cache poisoning (remote). The component is: dns_query_type(). The attack vector is:...Show more
The DNS client in InterNiche NicheStack TCP/IP 4.0.1 is affected by: Insufficient entropy in the DNS transaction id. The impact is: DNS cache poisoning (remote). The component is: dns_query_type(). The attack vector is: a specific DNS response packet.Show less
1Schneider Electric
6Evlink City Evc1s22p4 Firmware
Evlink City Evc1s7p4 FirmwareEvlink Parking Ev.2 Firmware+3 more
Jun 17, 2026
Jul 21, 2021
N/A· v4
9.8 CRITICAL· v3
7.5 HIGH· v2
A CWE-331: Insufficient Entropy vulnerability exists in EVlink City (EVC1S22P4 / EVC1S7P4 all versions prior to R8 V3.4.0.1), EVlink Parking (EVW2 / EVF2 / EV.2 all versions prior to R8 V3.4.0.1), and EVlink Smart Wallbo...Show more
A CWE-331: Insufficient Entropy vulnerability exists in EVlink City (EVC1S22P4 / EVC1S7P4 all versions prior to R8 V3.4.0.1), EVlink Parking (EVW2 / EVF2 / EV.2 all versions prior to R8 V3.4.0.1), and EVlink Smart Wallbox (EVB1A all versions prior to R8 V3.4.0.1 ) that could allow an attacker to gain unauthorized access to the charging station web serverShow less
1Sylabs
1Singularity
Jun 17, 2026
Jul 19, 2021
N/A· v4
9.8 CRITICAL· v3
7.5 HIGH· v2
Sylabs Singularity Enterprise through 1.6.2 has Insufficient Entropy in a nonce.
2Fedoraproject
Matrix
2Fedora
Synapse
Jun 17, 2026
May 11, 2021
N/A· v4
5.3 MEDIUM· v3
5.0 MEDIUM· v2
Synapse is a Matrix reference homeserver written in python (pypi package matrix-synapse). Matrix is an ecosystem for open federated Instant Messaging and VoIP. In Synapse before version 1.33.2 "Push rules" can specify co...Show more
Synapse is a Matrix reference homeserver written in python (pypi package matrix-synapse). Matrix is an ecosystem for open federated Instant Messaging and VoIP. In Synapse before version 1.33.2 "Push rules" can specify conditions under which they will match, including `event_match`, which matches event content against a pattern including wildcards. Certain patterns can cause very poor performance in the matching engine, leading to a denial-of-service when processing moderate length events. The issue is patched in version 1.33.2. A potential workaround might be to prevent users from making custom push rules, by blocking such requests at a reverse-proxy.Show less
3Fedoraproject
Libtpms ProjectRedhat
3Enterprise Linux
FedoraLibtpms
Jun 17, 2026
Apr 19, 2021
N/A· v4
5.5 MEDIUM· v3
2.1 LOW· v2
A flaw was found in libtpms in versions before 0.8.0. The TPM 2 implementation returns 2048 bit keys with ~1984 bit strength due to a bug in the TCG specification. The bug is in the key creation algorithm in RsaAdjustPri...Show more
A flaw was found in libtpms in versions before 0.8.0. The TPM 2 implementation returns 2048 bit keys with ~1984 bit strength due to a bug in the TCG specification. The bug is in the key creation algorithm in RsaAdjustPrimeCandidate(), which is called before the prime number check. The highest threat from this vulnerability is to data confidentiality.Show less
2Fedoraproject
Rclone
2Fedora
Rclone
Jun 17, 2026
Nov 19, 2020
N/A· v4
7.5 HIGH· v3
5.0 MEDIUM· v2
An issue was discovered in Rclone before 1.53.3. Due to the use of a weak random number generator, the password generator has been producing weak passwords with much less entropy than advertised. The suggested passwords...Show more
An issue was discovered in Rclone before 1.53.3. Due to the use of a weak random number generator, the password generator has been producing weak passwords with much less entropy than advertised. The suggested passwords depend deterministically on the time the second rclone was started. This limits the entropy of the passwords enormously. These passwords are often used in the crypt backend for encryption of data. It would be possible to make a dictionary of all possible passwords with about 38 million entries per password length. This would make decryption of secret material possible with a plausible amount of effort. NOTE: all passwords generated by affected versions should be changed.Show less