How severe is CVE-2020-25198?

CVE-2020-25198 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2020-25198 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (62nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2020-25198?

CVE-2020-25198 affects Moxa Nport Iaw5000a-i/o Firmware. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2020-25198?

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

When was CVE-2020-25198 published?

CVE-2020-25198 was published on 2020-12-23 and last updated on 2026-06-17.

CVE-2020-25198

CVE-2020-25198 is a high-severity vulnerability in Moxa Nport Iaw5000a-i/o Firmware with a CVSS 3.x base score of 8.8. 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-384.

Key facts

Severity: High (CVSS 3.x base score 8.8)
CVSS v2: 6.8
EPSS exploit prediction: 1% (62nd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-384
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 has incorrectly implemented protections from session fixation, which may allow an attacker to gain access to a session and hijack it by stealing the user’s cookies.

Frequently asked questions

What is CVE-2020-25198?: The built-in WEB server for MOXA NPort IAW5000A-I/O firmware version 2.1 or lower has incorrectly implemented protections from session fixation, which may allow an attacker to gain access to a session and hijack it by stealing the user’s cookies.
How severe is CVE-2020-25198?: CVE-2020-25198 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2020-25198 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (62nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2020-25198?: CVE-2020-25198 affects Moxa Nport Iaw5000a-i/o Firmware. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2020-25198?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2020-25198 published?: CVE-2020-25198 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:*:*:*:*:*:*:*:*

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