SiemensCVE-2026-62647
Siemens Reyrolle 7SR5: unauthenticated remote attacker could more easily predict
Critical9.3CVE-2026-62647 · Published Sep 8, 2026 · updated Sep 14, 2026
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.
Affected versions
| Package | Affected | Fixed in |
|---|---|---|
| Reyrolle 7SR5 Product | < V2.70 | V2.70 |
Details and references
- CVSS 4.0
- CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
- Severity from
- the vendor (its own CVE record or advisory)
- Weakness
- CWE-20
More Siemens advisories
All Siemens| Date | Advisory | Severity | Fixed in |
|---|---|---|---|
| Sep 8 | Siemens SIMOVE Fleetmanager: path traversal | Critical9.2 | V3.1.13+4 more |
| Sep 8 | Siemens Reyrolle 7SR5: denial of service | High8.7 | V2.70 |
| Sep 8 | Siemens Reyrolle 7SR5: improper access control | High8.7 | V2.70 |
| Sep 8 | Siemens Reyrolle 7SR5: unauthenticated attacker could the publicly available | Medium6.9 | V2.70 |
| Sep 8 | Siemens Reyrolle 7SR5: memory corruption | High7.0 | V2.70 |
| Sep 8 | Siemens Reyrolle 7SR5: attacker could the device to upload | High7.0 | V2.70 |