CVE-2025-3646
Published: 04 January 2026
Summary
CVE-2025-3646 is a high-severity Missing Authentication for Critical Function (CWE-306) vulnerability in Petlibro Petlibro. Its CVSS base score is 7.3 (High).
Operationally, exploitation aligns with the MITRE ATT&CK technique Exploit Public-Facing Application (T1190); ranked at the 19.2th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog; a public proof-of-concept is referenced.
Threat & Defense at a Glance
Threat & Defense Details
Likely Mitigating ControlsAI
Per-CVE control mapping for this CVE has not run yet; the list below is derived from the weakness types (CWEs) cited in the NVD entry.
Requires established identification and authentication to unlock, mitigating missing authentication for continued system access.
Requiring identification and rationale for actions allowed without authentication ensures critical functions are not left unprotected by forcing review of authentication requirements.
Authorizing mobile device connections to organizational systems ensures authentication is performed for this critical access function.
Guarantees critical functions are protected by mandatory invocation of the access control mechanism.
Auditing sessions makes it possible to detect access to critical functions without required authentication.
The assessment process confirms authentication is present and effective for critical functions, preventing exploitation from missing authentication.
Certification assesses that critical functions have required authentication controls in place.
Disabling non-essential functions and services eliminates the need to secure them, reducing exposure from missing authentication on unnecessary components.
MITRE ATT&CK Enterprise TechniquesAI
Why these techniques?
Authorization bypass in public device share API directly enables exploitation of public-facing application for unauthorized access and account manipulation on the platform.
NVD Description
Petlibro Smart Pet Feeder Platform versions up to 1.7.31 contains an authorization bypass vulnerability that allows unauthorized users to add users as shared owners to any device by exploiting missing permission checks. Attackers can send requests to the device share…
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API to gain unauthorized access to devices and view owner information without proper authorization validation.
Deeper analysisAI
CVE-2025-3646 is an authorization bypass vulnerability in the Petlibro Smart Pet Feeder Platform versions up to 1.7.31. The flaw arises from missing permission checks in the device share API, allowing unauthorized users to add other users as shared owners to any device. This issue, mapped to CWE-306 (Missing Authentication for Critical Function), carries a CVSS v3.1 base score of 7.3 (AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L) and was published on 2026-01-04.
Any unauthenticated attacker with network access can exploit this vulnerability by sending requests directly to the device share API, bypassing authorization validation. Successful exploitation enables attackers to gain unauthorized access to targeted devices, add themselves or others as shared owners, and view owner information, potentially compromising pet feeder controls and associated user data.
Advisories detailing the vulnerability and mitigation recommendations are available at https://bobdahacker.com/blog/petlibro and https://www.vulncheck.com/advisories/petlibro-smart-pet-feeder-platform-through-authorization-bypass-via-device-share-api.
Details
- CWE(s)