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Fencer Vulns
critical 9.0

CVE-2023-4299 json

Digi RealPort Protocol Use of Password Hash Instead of Password for Authentication

published 2023-08-31 3 y ago modified 2026-06-17 4 mo ago also EUVD-2023-54170

cvss
9.0
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.7%
EPSS 0.7% chance of exploitation in 30 days, percentile 52%
public exploits
0
none known

Summary

Digi RealPort Protocol is vulnerable to a replay attack that may allow an attacker to bypass authentication to access connected equipment.

Patch / fix

  • Digi International Digi ConnectPort TS 8/16 2.26.2.4
  • Digi International Digi ConnectPort LTS 8/16/32 1.4.9
  • Digi International Digi Connect ES 2.26.2.4

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

cisa ICSA-23-243-04 updated cvss 9.0

Digi RealPort Protocol

  • Digi International, Inc. Digi CM Console Server
    affected: mitigation “Digi International recommends users acquire and install patches that they have made available for the following products:” digi.com
  • Digi International, Inc. Digi Connect ES < 2.26.2.4
    affected: vendor fix, mitigation “Digi International recommends users acquire and install patches that they have made available for the following products:” digi.com
  • Digi International, Inc. Digi Connect SP
    affected: mitigation “Digi International recommends users acquire and install patches that they have made available for the following products:” digi.com
  • Digi International, Inc. Digi ConnectPort LTS 8/16/32 < 1.4.9 Digi International, Inc. Digi ConnectPort TS 8/16 < 2.26.2.4
    affected: vendor fix, mitigation “Digi International recommends users acquire and install patches that they have made available for the following products:” digi.com
  • Digi International, Inc. Digi One IA Digi International, Inc. Digi One IAP Family Digi International, Inc. Digi One SP Digi International, Inc. Digi One SP IA Digi International, Inc. Digi Passport Console Server Digi International, Inc. Digi PortServer TS
    +10 more products
    Digi International, Inc. Digi PortServer TS M MEI Digi International, Inc. Digi PortServer TS MEI Digi International, Inc. Digi PortServer TS MEI Hardened Digi International, Inc. Digi PortServer TS P MEI Digi International, Inc. Digi RealPort for Linux <= 1.9-40 Digi International, Inc. Digi RealPort for Windows <= 4.8.488.0 Digi International, Inc. Digi WR11 XT Digi International, Inc. Digi WR21 Digi International, Inc. Digi WR31 Digi International, Inc. Digi WR44 R
    affected: mitigation “Digi International recommends users acquire and install patches that they have made available for the following products:” digi.com
  • Digi International, Inc. Digi 6350-SR Digi International, Inc. Digi ConnectCore 8X products
    not affected

From CISA ICS and IT advisories (CSAF, https://github.com/cisagov/CSAF), a U.S. Government work; changed: reduced to products, statuses and remediations. CISA notification · csaf

CISA SSVC

Exploitation
none
Automatable
no
Technical impact
total
Assessed
21 mo ago

Exploit prediction

0.68% chance of exploitation in the next 30 days, higher than 52% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.1 9.0 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H
NVD 3.1 8.1 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected products

  • Digi International Digi RealPort
  • Digi International Digi ConnectPort TS 8/16
  • Digi International Digi Passport Console Server
  • Digi International Digi ConnectPort LTS 8/16/32
  • Digi International Digi CM Console Server
  • Digi International Digi PortServer TS
  • Digi International Digi PortServer TS MEI
  • Digi International Digi PortServer TS MEI Hardened
  • Digi International Digi PortServer TS M MEI
  • Digi International Digi PortServer TS P MEI
  • Digi International Digi One IAP Family
  • Digi International Digi One IA
  • Digi International Digi One SP IA
  • Digi International ​Digi One SP
  • Digi International Digi WR31
  • Digi International Digi WR11 XT
  • Digi International Digi WR44 R
  • Digi International Digi WR21
  • Digi International Digi Connect ES
  • Digi International Digi Connect SP
  • Digi International Digi 6350-SR
  • Digi International Digi ConnectCore 8X products

Classification

Weakness
  • CWE-836 Use of Password Hash Instead of Password for Authentication

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.