CWE-337
Predictable Seed in Pseudo-Random Number Generator (PRNG)
VariantDraft
Description
A Pseudo-Random Number Generator (PRNG) is initialized from a predictable seed, such as the process ID or system time.
The use of predictable seeds significantly reduces the number of possible seeds that an attacker would need to test in order to predict which random numbers will be generated by the PRNG.
Hierarchy (View 1000)
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CVEs mapped to this weakness (3)
| CVE | Sev | Risk | CVSS | EPSS | KEV | Published | Description |
|---|---|---|---|---|---|---|---|
| CVE-2025-7770 | Hig | 0.57 | — | 0.00 | Aug 6, 2025 | Tigo Energy's CCA device is vulnerable to insecure session ID generation in their remote API. The session IDs are generated using a predictable method based on the current timestamp, allowing attackers to recreate valid session IDs. When combined with the ability to circumvent session ID requirements for certain commands, this enables unauthorized access to sensitive device functions on connected solar optimization systems. | |
| CVE-2025-55069 | Hig | 0.54 | 8.3 | 0.00 | Sep 23, 2025 | A predictable seed in pseudo-random number generator vulnerability has been discovered in firmware version 3.60 of the Click Plus PLC. The vulnerability relies on the fact that the software implements a predictable seed for its pseudo-random number generator, which compromises the security of the generated private keys. | |
| CVE-2025-20613 | Low | 0.21 | 3.3 | 0.00 | Aug 12, 2025 | Predictable Seed in Pseudo-Random Number Generator (PRNG) in the firmware for some Intel(R) TDX may allow an authenticated user to potentially enable information disclosure via local access. |