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NVD / CVE Program· CNA icscert

CVE-2023-4299: Digi RealPort Protocol Use of Password Hash Instead of Password for Authentication

Noroxi assessment

Priority: Monitor (action score 32/100)

  • The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
  • Probability of exploitation in the next 30 days: 0.68% (FIRST EPSS); higher than 52.3% of all records.
  • Anyone who can reach it over the internet can trigger it. No account or password is required. No user action is required. Special conditions such as timing or configuration are required.
  • According to the record, no fixed version is available yet.

Low priority for now. Update when a fix is released; follow the vendor's advisory.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

Primary sources: NVD · CVE.org · FIRST EPSS

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

HighCVSS 8.1 · v3.1—No exploit No fix recorded
Published
Aug 31, 2023
Updated
Jun 17, 2026
EPSS
0.6% · 52th percentile

Report tools

JSON

Action score

32

Monitor

Low priority for now.

CVSS
32 / 40 · 8.1 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.6%

CISA SSVC decision

Exploitation
none
Automatable
no
Technical impact
total

Vulnrichment: CISA's decision-tree inputs.

CNA vs NVD score

NVD
8.1
CNA · icscert
9.0
0.9 point gap

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H

The score given by the assigning authority versus NVD’s independent score. A gap means the severity is contested.

Get told when this record changes

  • Not in KEV: no record of exploitation in the wild
  • No public exploit code on record
  • No fixed version yet

If any of these changes, we'll tell you in the daily email digest.

Follow CVE-2023-4299

When you'll hear from us

  • when it enters CISA KEV
  • when exploit code appears or is weaponized
  • when the record is updated (including a fixed version)
  • when EPSS rises 20 points in a week

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Noroxi analysis

What does it mean in your environment?

The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.

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Affected systems

Is your version affected?

Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.

VendorProduct
digirealport
digiconnectport ts 8\/16 firmware
digiconnectport ts 8\/16
digipassport firmware
digipassport
digiconnectport lts 8\/16\/32 firmware
digiconnectport lts 8\/16\/32
digicm firmware
digicm
digiportserver ts firmware
digiportserver ts
digiportserver ts mei firmware

and 27 more

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

  • digi cm firmwareall versions
  • digi connect es firmwarebefore 2.26.2.4
  • digi connect sp firmwareall versions
  • digi connectport lts 8/16/32 firmwarebefore 1.4.9
  • digi connectport ts 8/16 firmwarebefore 2.26.2.4
  • digi one ia firmwareall versions
  • digi one iap firmwareall versions
  • digi one sp firmwareall versions
  • digi one sp ia firmwareall versions
  • digi passport firmwareall versions
  • digi portserver ts firmwareall versions
  • digi portserver ts m mei firmwareall versions
  • digi portserver ts mei firmwareall versions
  • digi portserver ts mei hardened firmwareall versions
  • digi portserver ts p mei firmwareall versions
  • digi realportup to 1.9-40 inclusive
  • digi realportup to 4.8.488.0 inclusive
  • digi transport wr11 xt firmwareall versions
  • digi wr21 firmwareall versions
  • digi wr31 firmwareall versions

Versions reported by the vendor

Affected version ranges reported by the assigning authority (icscert). Independent of NVD's CPE analysis and usually ahead of it.

  • Digi International Digi 6350-SR

    • all versionsnot affected

  • Digi International Digi CM Console Server

    • all versionsaffected

  • Digi International Digi Connect ES

    • before 2.26.2.4affected

  • Digi International Digi Connect SP

    • all versionsaffected

  • Digi International Digi ConnectCore 8X products

    • all versionsnot affected

  • Digi International Digi ConnectPort LTS 8/16/32

    • before 1.4.9affected

  • Digi International Digi ConnectPort TS 8/16

    • before 2.26.2.4affected

  • Digi International Digi One IA

    • all versionsaffected

  • Digi International Digi One IAP Family

    • all versionsaffected

  • Digi International ​Digi One SP

    • all versionsaffected

  • Digi International Digi One SP IA

    • all versionsaffected

  • Digi International Digi Passport Console Server

    • all versionsaffected

Same product

digi: all records

Other highest-scoring records for the same primary product.

  • CVE-2021-36767In Digi RealPort through 4.10.490, authentication relies on a challenge-response mechanism that gives access to the server password, making
    39Monitor
  • CVE-2021-35977An issue was discovered in Digi RealPort for Windows through 4.8.488.0.
    39Monitor
  • CVE-2021-35979An issue was discovered in Digi RealPort through 4.8.488.0.
    32Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

No fix version is recorded for this entry. Check the references for vendor advisories.

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

No history yet (it accumulates with the daily EPSS job).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

No commit or PR link among the references.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

No nightly-computed relations.

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

—

Bug bounty scope

The product’s vendor appears in a public program. Matched by name; verify the scope text in the program.

Technical details

Attack conditions

  • Anyone who can reach it over the internet can trigger it.
  • No account or password is required.
  • No user action is required.
  • Special conditions such as timing or configuration are required.

If successful

Confidentiality
high · data can be read
Integrity
high · data or configuration can be modified
Availability
high · the service can be disrupted
Attack vector
Network
Attack complexity
High
Privileges required
None
User interaction
None
Scope
Unchanged
Confidentiality impact
High
Integrity impact
High
Availability impact
High

Weakness class (CWE)

CWE-836 · Use of Password Hash Instead of Password for Authentication

CVSS vector

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

nvd-primary

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

Change log

No changes recorded on tracked fields yet. Score, KEV, exploit maturity and fix status changes appear here.

References

Show all references (1 more)

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records