An issue was discovered in Digi RealPort for Windows through 4.8.488.0.
Priority MEDIUM 45CWE-120Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Code execution
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-120 and the CVSS impact.
Summary
An issue was discovered in Digi RealPort for Windows through 4.8.488.0. A buffer overflow exists in the handling of ADDP discovery response messages. This could result in arbitrary code execution.
Why it matters now
EPSS 0.01579 75th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
CPE configurations NVD · 36
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:digi:realport:*:*:*:*:*:linux:*:* | up to 1.9-40 | Vulnerable | Digi |
| cpe:2.3:a:digi:realport:*:*:*:*:*:windows:*:* | up to 4.8.488.0 | Vulnerable | Digi |
| cpe:2.3:o:digi:connectport_ts_8\/16_firmware:*:*:*:*:*:*:*:* | all versions | Vulnerable | Digi |
| cpe:2.3:h:digi:connectport_ts_8\/16:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Digi |
| cpe:2.3:o:digi:connectport_lts_8\/16\/32_firmware:*:*:*:*:*:*:*:* | all versions | Vulnerable | Digi |
| cpe:2.3:h:digi:connectport_lts_8\/16\/32:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Digi |
| cpe:2.3:o:digi:passport_integrated_console_server_firmware:*:*:*:*:*:*:*:* | all versions | Vulnerable | Digi |
| cpe:2.3:h:digi:passport_integrated_console_server:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Digi |
| cpe:2.3:o:digi:cm_firmware:*:*:*:*:*:*:*:* | all versions | Vulnerable | Digi |
| cpe:2.3:h:digi:cm:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Digi |
- cpe:2.3:a:digi:realport:*:*:*:*:*:linux:*:* Versions up to 1.9-40 Vulnerable ·Digi
- cpe:2.3:a:digi:realport:*:*:*:*:*:windows:*:* Versions up to 4.8.488.0 Vulnerable ·Digi
- cpe:2.3:o:digi:connectport_ts_8\/16_firmware:*:*:*:*:*:*:*:* Versions all versions Vulnerable ·Digi
- cpe:2.3:h:digi:connectport_ts_8\/16:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Digi
- cpe:2.3:o:digi:connectport_lts_8\/16\/32_firmware:*:*:*:*:*:*:*:* Versions all versions Vulnerable ·Digi
- cpe:2.3:h:digi:connectport_lts_8\/16\/32:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Digi
- cpe:2.3:o:digi:passport_integrated_console_server_firmware:*:*:*:*:*:*:*:* Versions all versions Vulnerable ·Digi
- cpe:2.3:h:digi:passport_integrated_console_server:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Digi
- cpe:2.3:o:digi:cm_firmware:*:*:*:*:*:*:*:* Versions all versions Vulnerable ·Digi
- cpe:2.3:h:digi:cm:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Digi
Show 26 more CPE
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:digi:portserver_ts_firmware:*:*:*:*:*:*:*:* | all versions | Vulnerable | Digi |
| cpe:2.3:h:digi:portserver_ts:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Digi |
| cpe:2.3:o:digi:portserver_ts_mei_firmware:*:*:*:*:*:*:*:* | all versions | Vulnerable | Digi |
| cpe:2.3:h:digi:portserver_ts_mei:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Digi |
| cpe:2.3:o:digi:portserver_ts_mei_hardened_firmware:*:*:*:*:*:*:*:* | all versions | Vulnerable | Digi |
| cpe:2.3:h:digi:portserver_ts_mei_hardened:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Digi |
| cpe:2.3:o:digi:portserver_ts_m_mei_firmware:*:*:*:*:*:*:*:* | all versions | Vulnerable | Digi |
| cpe:2.3:h:digi:portserver_ts_m_mei:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Digi |
| cpe:2.3:o:digi:6350-sr_firmware:*:*:*:*:*:*:*:* | all versions | Vulnerable | Digi |
| cpe:2.3:h:digi:6350-sr:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Digi |
| cpe:2.3:o:digi:portserver_ts_p_mei_firmware:*:*:*:*:*:*:*:* | all versions | Vulnerable | Digi |
| cpe:2.3:h:digi:portserver_ts_p_mei:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Digi |
| cpe:2.3:o:digi:transport_wr11_xt_firmware:*:*:*:*:*:*:*:* | all versions | Vulnerable | Digi |
| cpe:2.3:h:digi:transport_wr11_xt:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Digi |
| cpe:2.3:o:digi:one_iap_family_firmware:*:*:*:*:*:*:*:* | all versions | Vulnerable | Digi |
| cpe:2.3:h:digi:one_iap_family:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Digi |
| cpe:2.3:o:digi:one_ia_firmware:*:*:*:*:*:*:*:* | all versions | Vulnerable | Digi |
| cpe:2.3:h:digi:one_ia:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Digi |
| cpe:2.3:o:digi:wr31_firmware:*:*:*:*:*:*:*:* | all versions | Vulnerable | Digi |
| cpe:2.3:h:digi:wr31:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Digi |
| cpe:2.3:o:digi:wr44_r_firmware:*:*:*:*:*:*:*:* | all versions | Vulnerable | Digi |
| cpe:2.3:h:digi:wr44_r:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Digi |
| cpe:2.3:o:digi:connect_es_firmware:*:*:*:*:*:*:*:* | all versions | Vulnerable | Digi |
| cpe:2.3:h:digi:connect_es:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Digi |
| cpe:2.3:o:digi:wr21_firmware:*:*:*:*:*:*:*:* | all versions | Vulnerable | Digi |
| cpe:2.3:h:digi:wr21:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Digi |
- cpe:2.3:o:digi:portserver_ts_firmware:*:*:*:*:*:*:*:* Versions all versions Vulnerable ·Digi
- cpe:2.3:h:digi:portserver_ts:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Digi
- cpe:2.3:o:digi:portserver_ts_mei_firmware:*:*:*:*:*:*:*:* Versions all versions Vulnerable ·Digi
- cpe:2.3:h:digi:portserver_ts_mei:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Digi
- cpe:2.3:o:digi:portserver_ts_mei_hardened_firmware:*:*:*:*:*:*:*:* Versions all versions Vulnerable ·Digi
- cpe:2.3:h:digi:portserver_ts_mei_hardened:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Digi
- cpe:2.3:o:digi:portserver_ts_m_mei_firmware:*:*:*:*:*:*:*:* Versions all versions Vulnerable ·Digi
- cpe:2.3:h:digi:portserver_ts_m_mei:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Digi
- cpe:2.3:o:digi:6350-sr_firmware:*:*:*:*:*:*:*:* Versions all versions Vulnerable ·Digi
- cpe:2.3:h:digi:6350-sr:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Digi
- cpe:2.3:o:digi:portserver_ts_p_mei_firmware:*:*:*:*:*:*:*:* Versions all versions Vulnerable ·Digi
- cpe:2.3:h:digi:portserver_ts_p_mei:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Digi
- cpe:2.3:o:digi:transport_wr11_xt_firmware:*:*:*:*:*:*:*:* Versions all versions Vulnerable ·Digi
- cpe:2.3:h:digi:transport_wr11_xt:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Digi
- cpe:2.3:o:digi:one_iap_family_firmware:*:*:*:*:*:*:*:* Versions all versions Vulnerable ·Digi
- cpe:2.3:h:digi:one_iap_family:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Digi
- cpe:2.3:o:digi:one_ia_firmware:*:*:*:*:*:*:*:* Versions all versions Vulnerable ·Digi
- cpe:2.3:h:digi:one_ia:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Digi
- cpe:2.3:o:digi:wr31_firmware:*:*:*:*:*:*:*:* Versions all versions Vulnerable ·Digi
- cpe:2.3:h:digi:wr31:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Digi
- cpe:2.3:o:digi:wr44_r_firmware:*:*:*:*:*:*:*:* Versions all versions Vulnerable ·Digi
- cpe:2.3:h:digi:wr44_r:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Digi
- cpe:2.3:o:digi:connect_es_firmware:*:*:*:*:*:*:*:* Versions all versions Vulnerable ·Digi
- cpe:2.3:h:digi:connect_es:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Digi
- cpe:2.3:o:digi:wr21_firmware:*:*:*:*:*:*:*:* Versions all versions Vulnerable ·Digi
- cpe:2.3:h:digi:wr21:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Digi
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2021-35977
- 2026-10-03 Alias added: GHSA-g5mc-mhmx-jqjp
References
More Digi 6350-sr Firmware vulnerabilities
- TI-2021-14889 In Digi RealPort through 4.10.490, authentication relies on a challenge-response… CVSS 3.1CRITICAL 9.8
- TI-2021-14430 An issue was discovered in Digi RealPort through 4.8.488.0. CVSS 3.1HIGH 8.1
Sources
- CVE-2021-35977 · CVE Program
- CVE-2021-35977 · NVD
- FIRST EPSS
- GHSA-g5mc-mhmx-jqjp · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences