Out-of-Bounds Read Vulnerability in Shelly Pro 3EM by Shelly
CVE-2025-12056

8.3HIGH

Key Information:

Vendor

Shelly

Status
Pro 3em
Vendor
CVE Published:
19 November 2025

What is CVE-2025-12056?

The Shelly Pro 3EM, prior to version 1.4.4, contains a vulnerability that allows an out-of-bounds read, potentially leading to overread buffers. This security flaw may expose sensitive data by allowing unauthorized access to memory addresses outside the intended buffer, posing risks for data integrity and confidentiality.

Affected Version(s)

Pro 3Em 0 <= 1.4.4

References

https://www.nozominetworks.com/labs/vulnerability-advisor...
third-party-advisory

CVSS V4

Score:
8.3
Severity:
HIGH
Confidentiality:
None
Integrity:
None
Availability:
High
Attack Vector:
Adjacent Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Gabriele Quagliarella at Nozomi Networks
JSON
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CVE-2025-12056 : Out-of-Bounds Read Vulnerability in Shelly Pro 3EM by Shelly