CVE-2021-4228

Name: CVE-2021-4228
Creator: NVD / NIST
Published: 2022-10-24T14:15:50.107+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.4/10EPSS 9.95%

Last modified Jun 17, 2026

CVE-2021-4228 is a high-severity vulnerability rated 7.4/10 on the CVSS scale. 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.. EPSS estimates a 9.95% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1

7.4/10

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N

EPSS Probability

9.95%

95.0th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Lannerinc	Iac-Ast2500 Firmware	1.00.0

References

https://www.nozominetworks.com/blog/vulnerabilities-in-bmc-firmware-affect-ot-iot-device-security-part-1/Third Party Advisory
https://www.nozominetworks.com/labs/vulnerability-advisories/cve-2021-4228/Third Party Advisory
https://www.nozominetworks.com/blog/vulnerabilities-in-bmc-firmware-affect-ot-iot-device-security-part-1/Third Party Advisory
https://www.nozominetworks.com/labs/vulnerability-advisories/cve-2021-4228/Third Party Advisory

Timeline

Published: Oct 24, 2022
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-4228?

How severe is CVE-2021-4228?

CVE-2021-4228 has a CVSS score of 7.4/10 (HIGH severity). The EPSS model estimates a 9.95% probability of exploitation in the next 30 days.

How do I fix CVE-2021-4228?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2021-4228?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST