Cyber Resilience

CVE-2021-41847

HighPublic PoC

Published: 01 October 2021

Published
01 October 2021
Modified
21 November 2024
KEV Added
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Patch
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CVSS Score v3.1 8.8 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
EPSS Score 0.0050 66.5th percentile
Risk Priority 18 60% EPSS · 20% KEV · 20% CVSS

Summary

CVE-2021-41847 is a high-severity Authorization Bypass Through User-Controlled Key (CWE-639) vulnerability in 3Xlogic Infinias Access Control. Its CVSS base score is 8.8 (High).

Operationally, ranked in the top 33.5% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog; a public proof-of-concept is referenced.

EU & UK References

Vulnerability details

An issue was discovered in 3xLogic Infinias Access Control through 6.7.10708.0, affecting physical security. Users with login credentials assigned to a specific zone can send modified HTTP GET and POST requests, allowing them to view user data such as personal…

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information and Prox card credentials. Also, an authorized user of one zone can send API requests to unlock electronic locks associated with zones they are unauthorized to have access to. They can also create new user logins for zones they were not authorized to access, including the root zone of the software.

CWE(s)
CWE-639

Related Threats

No named actor attribution yet. ATT&CK technique mapping in progress for this CVE.

Affected Assets

3xlogic
infinias access control
≤ 6.7.10708.0

Mitigating Controls

Likely Mitigating Controls AI

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.

AC-24 Access Control Decisions
addresses: CWE-639

Per-request decision making makes it harder to bypass authorization using user-controlled keys without proper validation in the decision process.

AC-3 Access Enforcement
addresses: CWE-639

Consistent enforcement of approved authorizations makes bypassing via user-controlled keys ineffective.

References