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...

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 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...

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-2026-57082

The CVE-2026-57082 issue affects Net::BitTorrent for Perl (up to version 2.0.1). The MSE handshake derives its 160-bit Diffie-Hellman private key from Perl’s rand(), a non-cryptographic PRNG seeded once per process, via KeyExchange.pm. As a result, the shared secret and the RC4 keys (SHA-1("keyA"...

CVE-2026-57082

Net::BitTorrent versions through 2.0.1 for Perl generate the MSE Diffie-Hellman private key with a non-cryptographic PRNG. The MSE Message Stream Encryption handshake derives its 160-bit Diffie-Hellman private key from Perl's rand, a non-cryptographic drand48-class generator seeded once per...

CVE-2026-11702 Bytes::Random::Secure::Tiny versions through 1.011 for Perl share internal state across forked processes

Bytes::Random::Secure::Tiny versions through 1.011 for Perl share internal state across forked processes. When an object is initialised before forking, then the internal state for the PRNG is shared across processes and identical random streams will be produced. Secrets generated in multiprocess...

EUVD-2026-39641

Bytes::Random::Secure::Tiny versions through 1.011 for Perl share internal state across forked processes. When an object is initialised before forking, then the internal state for the PRNG is shared across processes and identical random streams will be produced. Secrets generated in multiprocess...

CVE-2026-11625 Bytes::Random::Secure versions through 0.29 for Perl share internal state across forked processes

Bytes::Random::Secure versions through 0.29 for Perl share internal state across forked processes. When an object is initialised before forking, or when the functional interface is used, then the internal state for the PRNG is shared across processes and identical random streams will be produced...

CVE-2026-9733

Mojolicious::Plugin::Web::Auth::OAuth2 versions through 0.17 for Perl have an insecure default state parameter. When no state generator is specified in the constructor, the module defaults to using a SHA-1 hash of predictable and low-entropy sources, including the epoch time which is leaked via t...

CVE-2026-45673

A flaw was found in Netty's DNS resolver component. This vulnerability arises from the use of a predictable pseudo-random number generator PRNG for DNS transaction IDs and a static User Datagram Protocol UDP source port. This combination significantly reduces the randomness of DNS queries, making...

CVE-2026-45949

A flaw was found in the Linux kernel's hardware random number generator hwrng core. A race condition exists where concurrent or rapid calls to the hwrngunregister function can lead to a use-after-free vulnerability. This issue allows the system to attempt to access freed memory, potentially causi...

EUVD-2026-32457

In the Linux kernel, the following vulnerability has been resolved: crypto: atmel-sha204a - Fix potential UAF and memory leak in remove path Unregister the hwrng to prevent new -read calls and flush the Atmel I2C workqueue before teardown to prevent a potential UAF if a queued callback runs while...

CVE-2026-45949

hwrng: core - use RCU and workstruct to fix race condition...

PT-2026-43816

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description A race condition exists in the hardware random number generator hwrng core. The hwrng fill pointer is not cleared until the hwrng fillfn thread exits. Because hwrng unregister reads hwrn...

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...

SUSE-SU-2026:1952-1 Security update for ovmf

This update for ovmf fixes the following issues - CVE-2026-25833: mbedtls: buffer underflow in x509inetptonipv6 bsc1261476. - CVE-2026-25834: mbedtls: Algorithm downgrade vulnerability bsc1261477. - CVE-2026-25835: mbedtls: PSA random generator cloning bsc1261478. - CVE-2026-34874: mbedtls: NULL...

CVE-2026-46474

Trog::TOTP versions before 1.006 for Perl generate secrets using rand. Secrets were generated using Perl's built-in rand function, which is predictable and unsuitable for security usage...

CVE-2026-3290

Timing limitations of the HRNG in RS9116 when power save mode is enabled results in predictable values...