How severe is CVE-2020-25196?

CVE-2020-25196 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2020-25196 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (69th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2020-25196?

CVE-2020-25196 affects Moxa Nport Iaw5000a-i/o Firmware. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2020-25196?

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-2020-25196 published?

CVE-2020-25196 was published on 2020-12-23 and last updated on 2026-06-17.

CVE-2020-25196

CVE-2020-25196 is a critical-severity vulnerability in Moxa Nport Iaw5000a-i/o Firmware with a CVSS 3.x base score of 9.8. 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-307.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
CVSS v2: 5.0
EPSS exploit prediction: 1% (69th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-307
Affected product: Moxa Nport Iaw5000a-i/o Firmware
Published: 2020-12-23
Last modified: 2026-06-17

Description

The built-in WEB server for MOXA NPort IAW5000A-I/O firmware version 2.1 or lower allows SSH/Telnet sessions, which may be vulnerable to brute force attacks to bypass authentication.

Frequently asked questions

What is CVE-2020-25196?: The built-in WEB server for MOXA NPort IAW5000A-I/O firmware version 2.1 or lower allows SSH/Telnet sessions, which may be vulnerable to brute force attacks to bypass authentication.
How severe is CVE-2020-25196?: CVE-2020-25196 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2020-25196 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (69th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2020-25196?: CVE-2020-25196 affects Moxa Nport Iaw5000a-i/o Firmware. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2020-25196?: 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-2020-25196 published?: CVE-2020-25196 was published on 2020-12-23 and last updated on 2026-06-17.

References

https://us-cert.cisa.gov/ics/advisories/icsa-20-287-01

Affected products (1)

cpe:2.3:o:moxa:nport_iaw5000a-i\/o_firmware:*:*:*:*:*:*:*:*

More vulnerabilities in Moxa Nport Iaw5000a-i/o Firmware

CVE-2020-25153 — Critical (CVSS 9.8): The built-in web service for MOXA NPort IAW5000A-I/O firmware version 2.1 or lower does not require users to have…
CVE-2020-25198 — High (CVSS 8.8): The built-in WEB server for MOXA NPort IAW5000A-I/O firmware version 2.1 or lower has incorrectly implemented…
CVE-2020-25194 — High (CVSS 8.8): The built-in WEB server for MOXA NPort IAW5000A-I/O firmware version 2.1 or lower has improper privilege management,…
CVE-2020-25190 — High (CVSS 7.5): The built-in WEB server for MOXA NPort IAW5000A-I/O firmware version 2.1 or lower stores and transmits the credentials…
CVE-2023-4929 — Medium (CVSS 6.5): All firmware versions of the NPort 5000 Series are affected by an improper validation of integrity check vulnerability.…
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