CVE-2026-47831

Use of a cryptographically weak random number generator in the GenerateRandomPassword function in bosh-windows-stemcell-builder allows a remote attacker to brute-force the resulting SSH login via TCP/22. Affected versions: bosh-windows-stemcell-builder versions prior to v2019.98...

CVE-2026-44040 UltraVNC vncauth.c uses time-seeded libc rand() to generate VNC authentication challenge bytes

UltraVNC through 1.8.2.2 uses a cryptographically weak pseudo-random number generator to produce VNC authentication challenge bytes. In rfb/vncauth.c:119-129, the vncRandomBytes function seeds libc rand with time0 + getpid + rand and generates a 16-byte challenge. The combined seed space is...

EUVD-2026-40879

UltraVNC through 1.8.2.2 uses a cryptographically weak pseudo-random number generator to produce VNC authentication challenge bytes. In rfb/vncauth.c:119-129, the vncRandomBytes function seeds libc rand with time0 + getpid + rand and generates a 16-byte challenge. The combined seed space is...

CVE-2026-44040

UltraVNC

PT-2026-54477

Name of the Vulnerable Software and Affected Versions UltraVNC versions prior to 1.8.2.3 Description The software uses a cryptographically weak pseudo-random number generator to produce VNC authentication challenge bytes. Specifically, the vncRandomBytes function seeds libc rand using a combinati...

CVE-2026-40975

A flaw was found in Spring Boot. The $random.value property source utilizes a weak pseudo-random number generator PRNG, meaning the values it produces are not sufficiently random for use as cryptographic secrets. An attacker could potentially predict these values, which may lead to information...

Weak Random Value Generation For Secrets (weak PRNG)

Spring Boot is vulnerable to the use of a weak pseudo-random number generator PRNG. The vulnerability is due to the use of predictable random value sources e.g., $random.value, $random.int, $random.long, which allows an attacker to guess or brute-force generated secrets and compromise application...

CVE-2026-40975

Values produced by $random.value are not suitable for use as secrets. $random.uuid is not affected. $random.int and $random.long should never be used for secrets as they are numeric values with a predictable range. Affected: Spring Boot 4.0.0–4.0.5 fix 4.0.6, 3.5.0–3.5.13 fix 3.5.14, 3.4.0–3.4.15...

CVE-2026-40514 SmarterTools SmarterMail < Build 9610 Cryptographic Weakness via Weak RNG

SmarterTools SmarterMail builds prior to 9610 contain a cryptographic weakness in the file and email sharing endpoints that use DES-CBC encryption with keys and initialization vectors derived from System.Random seeded with insufficient entropy, reducing the seed space to approximately 19,000...

CVE-2026-25726

Cloudreve is a self-hosted file management and sharing system. Prior to version 4.13.0, the application uses the weak pseudo-random number generator math/rand seeded with time.Now.UnixNano to generate critical security secrets, including the secretkey, and hashidsalt. These secrets are generated...

CVE-2026-25726 Cloudreve is vulnerable to Account Takeover via Weak Cryptographic Token Generation (Insecure PRNG Seeding)

Cloudreve is a self-hosted file management and sharing system. Prior to version 4.13.0, the application uses the weak pseudo-random number generator math/rand seeded with time.Now.UnixNano to generate critical security secrets, including the secretkey, and hashidsalt. These secrets are generated...

Cloudreve 安全特征问题漏洞

Cloudreve is an open-source public cloud file system that supports multiple cloud storage drivers. Versions of Cloudreve prior to 4.13.0 have a security feature vulnerability. This vulnerability stems from the use of a weak pseudo-random number generator for generating security keys, which may le...

Use of Cryptographically Weak Pseudo-Random Number Generator (PRNG)

Overview Affected versions of this package are vulnerable to Use of Cryptographically Weak Pseudo-Random Number Generator PRNG seeded with predictable values in the secretkey and hashidsalt. An attacker can gain unauthorized access to any user account, including administrators, by brute-forcing t...

Use of Cryptographically Weak Pseudo-Random Number Generator (PRNG)

Overview Affected versions of this package are vulnerable to Use of Cryptographically Weak Pseudo-Random Number Generator PRNG seeded with predictable values in the secretkey and hashidsalt. An attacker can gain unauthorized access to any user account, including administrators, by brute-forcing t...

Use of Cryptographically Weak Pseudo-Random Number Generator (PRNG)

Overview Affected versions of this package are vulnerable to Use of Cryptographically Weak Pseudo-Random Number Generator PRNG seeded with predictable values in the secretkey and hashidsalt. An attacker can gain unauthorized access to any user account, including administrators, by brute-forcing t...

Use of Cryptographically Weak Pseudo-Random Number Generator (PRNG)

Overview Affected versions of this package are vulnerable to Use of Cryptographically Weak Pseudo-Random Number Generator PRNG seeded with predictable values in the secretkey and hashidsalt. An attacker can gain unauthorized access to any user account, including administrators, by brute-forcing t...

Exploit for Use of Cryptographically Weak Pseudo-Random Number Generator (PRNG) in Openssl

🔐 SSH Exploit Tool Educational Use Only 📌 Description Th...

CVE-2024-57854

Net::NSCA::Client versions through 0.009002 for Perl uses a poor random number generator. Version v0.003 switched to use Data::Rand::Obscure instead of Crypt::Random for generation of a random initialisation vectors. Data::Rand::Obscure uses Perl's built-in rand function, which is not suitable fo...

CVE-2024-57854 Net::NSCA::Client versions through 0.009002 for Perl uses a poor random number generator

Net::NSCA::Client versions through 0.009002 for Perl uses a poor random number generator. Version v0.003 switched to use Data::Rand::Obscure instead of Crypt::Random for generation of a random initialisation vectors. Data::Rand::Obscure uses Perl's built-in rand function, which is not suitable fo...

Use of Cryptographically Weak Pseudo-Random Number Generator (PRNG)

Overview Affected versions of this package are vulnerable to Use of Cryptographically Weak Pseudo-Random Number Generator PRNG due to the UUIDv4 and UUID functions silently returning predictable values, such as the zero UUID, when the cryptographic random number generator fails. An attacker can...