How severe is CVE-2020-6997?

CVE-2020-6997 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.

Is CVE-2020-6997 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (53rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2020-6997?

CVE-2020-6997 primarily affects Moxa Eds-g516e Firmware. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2020-6997?

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-2020-6997 published?

CVE-2020-6997 was published on 2020-03-24 and last updated on 2026-06-17.

CVE-2020-6997

CVE-2020-6997 is a high-severity vulnerability in Moxa Eds-g516e Firmware with a CVSS 3.x base score of 7.5. 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-319.

Key facts

Severity: High (CVSS 3.x base score 7.5)
CVSS v2: 5.0
EPSS exploit prediction: 1% (53rd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-319
Affected product: Moxa Eds-g516e Firmware
Published: 2020-03-24
Last modified: 2026-06-17

Description

In Moxa EDS-G516E Series firmware, Version 5.2 or lower, sensitive information is transmitted over some web applications in cleartext.

Frequently asked questions

What is CVE-2020-6997?: In Moxa EDS-G516E Series firmware, Version 5.2 or lower, sensitive information is transmitted over some web applications in cleartext.
How severe is CVE-2020-6997?: CVE-2020-6997 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.
Is CVE-2020-6997 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (53rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2020-6997?: CVE-2020-6997 primarily affects Moxa Eds-g516e Firmware. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2020-6997?: 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-2020-6997 published?: CVE-2020-6997 was published on 2020-03-24 and last updated on 2026-06-17.

References

https://www.us-cert.gov/ics/advisories/icsa-20-056-04

Affected products (2)

cpe:2.3:o:moxa:eds-g516e_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:moxa:eds-510e_firmware:*:*:*:*:*:*:*:*

More vulnerabilities in Moxa Eds-g516e Firmware

CVE-2020-7007 — Critical (CVSS 9.8): In Moxa EDS-G516E Series firmware, Version 5.2 or lower, the attacker may execute arbitrary codes or target the device,…
CVE-2020-6991 — Critical (CVSS 9.8): In Moxa EDS-G516E Series firmware, Version 5.2 or lower, weak password requirements may allow an attacker to gain…
CVE-2020-6981 — Critical (CVSS 9.8): In Moxa EDS-G516E Series firmware, Version 5.2 or lower, an attacker may gain access to the system without proper…
CVE-2020-7001 — High (CVSS 7.5): In Moxa EDS-G516E Series firmware, Version 5.2 or lower, the affected products use a weak cryptographic algorithm,…
CVE-2020-6979 — High (CVSS 7.5): In Moxa EDS-G516E Series firmware, Version 5.2 or lower, the affected products use a hard-coded cryptographic key,…
CVE-2019-19707 — High (CVSS 7.5): On Moxa EDS-G508E, EDS-G512E, and EDS-G516E devices (with firmware through 6.0), denial of service can occur via…

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