CVE-2025-7770
Predictable Seed in Pseudo-Random Number Generator (PRNG) in Tigo Energy Cloud Connect Advanced
- State
- Published
- Severity
- 8.7 High
- Published
- Aug 6, 2025
- Updated
- Aug 7, 2025
- Reserved
- Jul 17, 2025
Description
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 8.7 High | CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N | icscert |
Weaknesses
- CWE-337 Predictable Seed in Pseudo-Random Number Generator (PRNG)
Affected Products
| Product | Versions |
|---|---|
Cloud Connect AdvancedTigo Energy |
|
References
- https://www.cisa.gov/news-events/ics-advisories/icsa-25-217-02government-resource
Every record here comes from the CVE Program’s CVE List. © 1999–2026 The MITRE Corporation. CVE is a registered trademark of The MITRE Corporation. The records are reproduced under the CVE Program terms of use.