CVE-2021-35979

mediumpriority · track · 32OT risk · elevatedEPSS 0.009 · 59 %ileEUUS

grimoire priorityP3 · Track

Exploitable?

—

no known exploitation

Likely / severe?

0.89% (59th) EPSS

CVSS 6.8 · medium

Is it mine?

20 products

Check your exposure

Who says so?

3 sources

cnnvd · enisa_euvd · nvd

EPSS · scored 2026-10-27

An issue was discovered in Digi RealPort through 4.8.488.0. The 'encrypted' mode is vulnerable to man-in-the-middle attacks and does not perform authentication.

cvss

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

8.1

010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · medium–high · 6.8–8.1

v2.06.8mediumAV:N/AC:M/Au:N/C:P/I:P/A:Pprimary · NVD / NIST USexploitability 8.6 · impact 6.4

v3.18.1highCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:Hprimary · NVD / NIST USexploitability 2.2 · impact 5.9

v3.17.4highCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H/E:Usecondary · CVSS-BT (t0sche)

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-306USprimary

affected products (20)

Products and version ranges known to be affected.

n/a n/a≤ n/aenisa_euvdEU
digi 6350-sr firmwareall versionsnvdUScpe:2.3:o:digi:6350-sr_firmware:*:*:*:*:*:*:*:*
digi cm firmwareall versionsnvdUScpe:2.3:o:digi:cm_firmware:*:*:*:*:*:*:*:*
digi connect es firmwareall versionsnvdUScpe:2.3:o:digi:connect_es_firmware:*:*:*:*:*:*:*:*
digi connectport lts 8/16/32 firmwareall versionsnvdUScpe:2.3:o:digi:connectport_lts_8\/16\/32_firmware:*:*:*:*:*:*:*:*
digi connectport ts 8/16 firmwareall versionsnvdUScpe:2.3:o:digi:connectport_ts_8\/16_firmware:*:*:*:*:*:*:*:*
digi one ia firmwareall versionsnvdUScpe:2.3:o:digi:one_ia_firmware:*:*:*:*:*:*:*:*
digi one iap family firmwareall versionsnvdUScpe:2.3:o:digi:one_iap_family_firmware:*:*:*:*:*:*:*:*
digi passport integrated console server firmwareall versionsnvdUScpe:2.3:o:digi:passport_integrated_console_server_firmware:*:*:*:*:*:*:*:*
digi portserver ts firmwareall versionsnvdUScpe:2.3:o:digi:portserver_ts_firmware:*:*:*:*:*:*:*:*
digi portserver ts m mei firmwareall versionsnvdUScpe:2.3:o:digi:portserver_ts_m_mei_firmware:*:*:*:*:*:*:*:*
digi portserver ts mei firmwareall versionsnvdUScpe:2.3:o:digi:portserver_ts_mei_firmware:*:*:*:*:*:*:*:*
digi portserver ts mei hardened firmwareall versionsnvdUScpe:2.3:o:digi:portserver_ts_mei_hardened_firmware:*:*:*:*:*:*:*:*
digi portserver ts p mei firmwareall versionsnvdUScpe:2.3:o:digi:portserver_ts_p_mei_firmware:*:*:*:*:*:*:*:*
digi realport≤ 1.9-40nvdUScpe:2.3:a:digi:realport:*:*:*:*:*:*:*:*
digi realport≤ 4.8.488.0nvdUScpe:2.3:a:digi:realport:*:*:*:*:*:*:*:*
digi transport wr11 xt firmwareall versionsnvdUScpe:2.3:o:digi:transport_wr11_xt_firmware:*:*:*:*:*:*:*:*
digi wr21 firmwareall versionsnvdUScpe:2.3:o:digi:wr21_firmware:*:*:*:*:*:*:*:*
digi wr31 firmwareall versionsnvdUScpe:2.3:o:digi:wr31_firmware:*:*:*:*:*:*:*:*
digi wr44 r firmwareall versionsnvdUScpe:2.3:o:digi:wr44_r_firmware:*:*:*:*:*:*:*:*

also known as (3)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd nvd NVD CVE.org MITRE

published 2021-10-08modified 2026-06-17

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+4464 more

references (4)

External citations — patches, advisories, analysis.

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