CVE-2025-7770

Predictable Seed in Pseudo-Random Number Generator (PRNG) in Tigo Energy Cloud Connect Advanced

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.

Remediation

Workaround:

  • Tigo Energy is aware of these vulnerabilities and is actively working on a fix to address them. Visit Tigo Energy's Help Center for more specific security recommendations.

Category

8.7
CVSS
Severity: High
CVSS 4.0 •
EPSS 0.05%
Affected: Tigo Energy Cloud Connect Advanced
Published at:
Updated at:

References

Link Tags
https://www.cisa.gov/news-events/ics-advisories/icsa-25-217-02 government resource

Frequently Asked Questions

What is the severity of CVE-2025-7770?
CVE-2025-7770 has been scored as a high severity vulnerability.
How to fix CVE-2025-7770?
As a workaround for remediating CVE-2025-7770: Tigo Energy is aware of these vulnerabilities and is actively working on a fix to address them. Visit Tigo Energy's Help Center for more specific security recommendations.
Is CVE-2025-7770 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2025-7770 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2025-7770?
CVE-2025-7770 affects Tigo Energy Cloud Connect Advanced.
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