CVE-2020-6999

mediumpriority · track · 26EPSS 0.010 · 62 %ileEUUS

grimoire priorityP3 · Track

Exploitable?

—

no known exploitation

Likely / severe?

0.98% (62nd) EPSS

CVSS 4 · medium

Is it mine?

6 products

Check your exposure

Who says so?

4 sources

cnnvd · enisa_euvd · cisa_csaf_ot · nvd

EPSS · scored 2026-10-28

In Moxa EDS-G516E Series firmware, Version 5.2 or lower, some of the parameters in the setting pages do not ensure text is the correct size for its buffer.

remediations

Vendor fix, mitigation, or workaround guidance, as published by each source.

No vendor fix yet; a mitigation is available.

MitigationEDS-510E Series firmwarecisa_csaf_ot
Enable HTTPS from the “Management Interface” setting.
MitigationEDS-G516E Series firmwarecisa_csaf_ot
Enable HTTPS from the “Management Interface” setting.

cvss

Technical severity, 0–10. One row per scoring source.

6.5

010

base score 0–10 · higher = more severe · hover a vector to decode

v2.04mediumAV:N/AC:L/Au:S/C:N/I:N/A:Pprimary · NVD / NIST USexploitability 8 · impact 2.9

v3.16.5mediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:Hprimary · NVD / NIST USexploitability 2.8 · impact 3.6

v3.06.5mediumCVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:Hsecondary · CISA US

v3.16mediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H/E:Usecondary · CVSS-BT (t0sche)

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-120USprimaryCWE-120US

affected products (6)

Products and version ranges known to be affected.

EDS-510E Series firmware: Version 5.2 or lowerall versionscisa_csaf_otUS
EDS-G516E Series firmware: Version 5.2 or lowerall versionscisa_csaf_otUS
Moxa EDS-510E Series firmware≤ 5.2cisa_csaf_otUS
Moxa EDS-G516E Series firmware≤ 5.2cisa_csaf_otUS
n/a Moxa EDS-G516E Series firmware, Version 5.2 or lower≤ Moxa EDS-G516E Series firmware, Version 5.2 or lowerenisa_euvdEU
moxa mds-g516e firmware≤ 5.2nvdUScpe:2.3:o:moxa:mds-g516e_firmware:*:*:*:*:*:*:*:*

advisories (1)

Vendor and ecosystem advisories describing this.

ICSA-20-056-04Moxa EDS-G516E and EDS-510E Series Ethernet Switches2020-02-25icsa · cisa_csaf_otUS
Successful exploitation of these vulnerabilities could crash the device, execute arbitrary code, and allow access to sensitive information.

also known as (3)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd cisa_csaf_ot nvd NVD CVE.org MITRE

published 2020-03-26modified 2026-06-17

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+5664 more

references (6)

External citations — patches, advisories, analysis.

http://www.nsfocus.net/vulndb/47464 cnnvd
https://nvd.nist.gov/vuln/detail/CVE-2020-6999 cnnvd
https://www.moxa.com/Patchcnnvd
https://www.us-cert.gov/ics/advisories/icsa-20-056-04 cnnvd
https://www.us-cert.gov/ics/advisories/icsa-20-056-04 enisa_euvd
https://www.us-cert.gov/ics/advisories/icsa-20-056-04PatchThird Party AdvisoryUS Government Resourcenvd

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