How severe is CVE-2022-28223?

CVE-2022-28223 has a CVSS 3.x base score of 9.1, rated critical severity. It is exploitable over network with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2022-28223 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (60th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2022-28223?

CVE-2022-28223 primarily affects Tekon Kio Firmware. In total, 8 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2022-28223?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

When was CVE-2022-28223 published?

CVE-2022-28223 was published on 2022-03-30 and last updated on 2026-06-17.

CVE-2022-28223

CVE-2022-28223 is a critical-severity vulnerability in Tekon Kio Firmware with a CVSS 3.x base score of 9.1. 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-434.

Key facts

Severity: Critical (CVSS 3.x base score 9.1)
CVSS v2: 9.0
EPSS exploit prediction: 1% (60th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-434
Affected product: Tekon Kio Firmware
Published: 2022-03-30
Last modified: 2026-06-17

Description

Tekon KIO devices through 2022-03-30 allow an authenticated admin user to escalate privileges to root by uploading a malicious Lua plugin.

Frequently asked questions

What is CVE-2022-28223?: Tekon KIO devices through 2022-03-30 allow an authenticated admin user to escalate privileges to root by uploading a malicious Lua plugin.
How severe is CVE-2022-28223?: CVE-2022-28223 has a CVSS 3.x base score of 9.1, rated critical severity. It is exploitable over network with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2022-28223 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (60th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2022-28223?: CVE-2022-28223 primarily affects Tekon Kio Firmware. In total, 8 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2022-28223?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2022-28223 published?: CVE-2022-28223 was published on 2022-03-30 and last updated on 2026-06-17.

References

https://medium.com/%40bertinjoseb/post-auth-rce-based-in-malicious-lua-plugin-script-upload-scada-controllers-located-in-russia-57044425ac38

Affected products (8)

cpe:2.3:o:tekon:kio_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:tekon:kio-1m_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:tekon:kio-2mrs_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:tekon:kio-2m_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:tekon:kio-2ms_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:tekon:kio-2md_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:tekon:kio-8\(4\)_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:tekon:kio-8\(4\)l_firmware:*:*:*:*:*:*:*:*

Other CWE-434 (Unrestricted Upload of File with Dangerous Type) vulnerabilities

CVE-2026-48283 — Critical (CVSS 10.0): ColdFusion versions 2025.9, 2023.20 and earlier are affected by an Unrestricted Upload of File with Dangerous Type…
CVE-2026-48276 — Critical (CVSS 10.0): ColdFusion versions 2025.9, 2023.20 and earlier are affected by an Unrestricted Upload of File with Dangerous Type…
CVE-2026-57700 — Critical (CVSS 10.0): Unrestricted Upload of File with Dangerous Type vulnerability in Daan.Dev OMGF Pro allows Using Malicious Files. This…
CVE-2025-69129 — Critical (CVSS 10.0): Unauthenticated Arbitrary File Upload in WordPress & WooCommerce Scraper Plugin, Import Data from Any Site <= 1.0.7…
CVE-2026-40772 — Critical (CVSS 10.0): Unauthenticated Arbitrary File Upload in GeekyBot <= 1.2.2 versions.
CVE-2026-40412 — Critical (CVSS 10.0): Unrestricted upload of file with dangerous type in Azure Orbital Spatio allows an unauthorized attacker to execute code…

Browse all CWE-434 (Unrestricted Upload of File with Dangerous Type) vulnerabilities →