CVE-2021-35979
An issue was discovered in Digi RealPort through 4.8.488.0. The 'encrypted' mode is vulnerable to...
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.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- High
- Privileges needed
- None
- User interaction
- None
What an attacker can affect
- Confidentiality
- High
- Integrity
- High
- Availability
- High
Exploit likelihood
What each source reports
NVD Score used
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.
- Record
CVE-2021-35979- CVSS 3.1
- 8.1 High
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H - CVSS 2.0
- 6.8 Medium
AV:N/AC:M/Au:N/C:P/I:P/A:P - Weakness
- CWE-306
- Updated
- 2026-11-02
CVE List No score
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.
- Record
CVE-2021-35979- Updated
- 2026-11-02
EUVDEUVD-2021-22612 No score
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.
- Record
EUVD-2021-22612- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-w5p3-6pf5-78hg
An issue was discovered in Digi RealPort through 4.8.488.0. The 'encrypted' mode is vulnerable to...
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.
- Record
GHSA-w5p3-6pf5-78hg- CVSS 3.1
- 8.1 High
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H - Weakness
- CWE-287, CWE-306
- Updated
- 2026-11-02
Affected products
- digi realport
- digi 6350-sr firmware
- digi cm firmware
- digi connect es firmware
- digi connectport lts 8\/16\/32 firmware
- digi connectport ts 8\/16 firmware
- digi one ia firmware
- digi one iap family firmware
- digi passport integrated console server firmware
- digi portserver ts firmware
- digi portserver ts m mei firmware
- digi portserver ts mei firmware
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2021-35979 is a high vulnerability (CVSS 8.1) in Digi Realport, published October 8, 2021. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.89%, the 59th percentile. No source names a fixed version.