CVE-2021-4228 - CVE House
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Status published Medium CVE-2021-4228

Hard-coded TLS Certificate

Vulnerability Description

Use of hard-coded TLS certificate by default allows an attacker to perform Man-in-the-Middle (MitM) attacks even in the presence of the HTTPS connection. This issue affects: Lanner Inc IAC-AST2500A standard firmware version 1.00.0.

Impact Analysis

Refer to official advisory for detailed impact metrics.

Remediation

Ensure systems are updated to the latest vendor-supplied patch levels.

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Credits & Attribution

The following person or organization is credited with identifying this vulnerability, as recorded in the NVD database:

  • Andrea Palanca of Nozomi Networks found this bug during a security research activity.

References

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CVE-2021-44769
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CVE-2021-44467
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Medium 5.3

Affected Vendor

Affected Software

IAC-AST2500A
Vulnerable Versions:
1.00.0

Timeline

Official Publish: October 24th, 2022
Last Modified: May 5th, 2025
Added to House: July 21st, 2026

CVSS Vectors

V3: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:L/I:L/A:L

Weaknesses (CWE)

CWE-321

MITRE ATT&CK TTPs

T1552 Unsecured Credentials
Credential Access
T1040 Network Sniffing
Credential Access
T1537 Transfer Data to Cloud Account
Credential Access
T1078 Valid Accounts
Persistence
T1041 Exfiltration Over C2 Channel
Exfiltration