CVE-2021-36767

highpriority · track · 39EPSS 0.007 · 52 %ileEUUS

grimoire priorityP2 · Scheduled

Exploitable?

—

no known exploitation

Likely / severe?

0.69% (52nd) EPSS

CVSS 7.5 · high

Is it mine?

21 products

Check your exposure

Who says so?

3 sources

cnnvd · enisa_euvd · nvd

EPSS · scored 2026-10-26

In Digi RealPort through 4.10.490, authentication relies on a challenge-response mechanism that gives access to the server password, making the protection ineffective. An attacker may send an unauthenticated request to the server. The server will reply with a weakly-hashed version of the server's access password. The attacker may then crack this hash offline in order to successfully login to the server.

cvss

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

9.8

010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · high–critical · 7.5–9.8

v2.07.5highAV:N/AC:L/Au:N/C:P/I:P/A:Pprimary · NVD / NIST USexploitability 10 · impact 6.4

v3.19.8criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:Hprimary · NVD / NIST USexploitability 3.9 · impact 5.9

v3.19criticalCVSS:3.1/AV:N/AC:L/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-916USprimary

affected products (21)

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 firmwareall versionsnvdUScpe:2.3:o:digi:one_iap_firmware:*:*:*:*:*:*:*:*
digi one iap haz firmwareall versionsnvdUScpe:2.3:o:digi:one_iap_haz_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≤ 4.10.490nvdUScpe:2.3:a:digi:realport:*:*:*:*:*:*:*:*
digi realport≤ 1.9-40nvdUScpe: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:*:*:*:*:*:*:*:*

showing 20 of 21

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

related (162)

Related entries.

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+157 more

references (4)

External citations — patches, advisories, analysis.

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