How severe is CVE-2021-4228?

CVE-2021-4228 has a CVSS 3.x base score of 5.8, rated medium severity. It is exploitable over network with high attack complexity, requires no privileges and user interaction. Impact on confidentiality is low, integrity low, and availability low.

Is CVE-2021-4228 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 10% (95th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-4228?

CVE-2021-4228 affects Lannerinc Iac-ast2500 Firmware. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-4228?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2021-4228 published?

CVE-2021-4228 was published on 2022-10-24 and last updated on 2026-06-17.

CVE-2021-4228

CVE-2021-4228 is a medium-severity vulnerability in Lannerinc Iac-ast2500 Firmware with a CVSS 3.x base score of 5.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-798.

Key facts

Severity: Medium (CVSS 3.x base score 5.8)
EPSS exploit prediction: 10% (95th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-798
Affected product: Lannerinc Iac-ast2500 Firmware
Published: 2022-10-24
Last modified: 2026-06-17

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.

Frequently asked questions

What is CVE-2021-4228?: 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.
How severe is CVE-2021-4228?: CVE-2021-4228 has a CVSS 3.x base score of 5.8, rated medium severity. It is exploitable over network with high attack complexity, requires no privileges and user interaction. Impact on confidentiality is low, integrity low, and availability low.
Is CVE-2021-4228 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 10% (95th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-4228?: CVE-2021-4228 affects Lannerinc Iac-ast2500 Firmware. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-4228?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2021-4228 published?: CVE-2021-4228 was published on 2022-10-24 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:o:lannerinc:iac-ast2500_firmware:1.00.0:*:*:*:*:*:*:*

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