Vulnerability identifier: #VU52686

Vulnerability risk: High

CVSSv3.1: 7.9 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2020-27149

CWE-ID: CWE-284

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
NPort IA5150A Series
Hardware solutions / Routers & switches, VoIP, GSM, etc
NPort IA5250A Series
Hardware solutions / Routers & switches, VoIP, GSM, etc
NPort IA5450A Series
Hardware solutions / Routers & switches, VoIP, GSM, etc

Vendor: Moxa

Description

The vulnerability allows a remote attacker to gain unauthorized access to otherwise restricted functionality.

The vulnerability exists due to improper access restrictions. A remote attacker can bypass implemented security restrictions and gain elevated privileges on the system.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

NPort IA5150A Series: 1.4

NPort IA5250A Series : 1.4

NPort IA5450A Series: 1.7

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External links
http://www.moxa.com/en/support/product-support/security-advisory/nport-ia5000a-serial-device-servers-vulnerabilities
http://ics-cert.kaspersky.com/advisories/klcert-advisories/2021/05/11/klcert-20-018

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.