CVE-2026-62647
High
Description
A vulnerability has been identified in Reyrolle 7SR5 (All versions < V2.70). A random number generator is used to generate security-relevant values (such as session identifiers used for authentication purposes) that is not initialized with a True Random Number Generator (TRNG), resulting in a predictable sequence of generated values. This could allow an unauthenticated remote attacker to more easily predict the generated values and impersonate a legitimate authenticated user, potentially gaining unauthorized access to the device.
SeverityHigh
CVSS7.4
Exploit probability—
ProductReyrolle 7SR5
PublishedSep 8, 2026
First seenSep 8, 2026
Weakness typeCWE-20Improper input validation
How to fix
Update
- Siemens Reyrolle 7SR5V2.70 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| Siemens Reyrolle 7SR5 | v < V2.70 | V2.70 |
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