CVE-2021-36767 json
In Digi RealPort through 4.10.490, authentication relies on a challenge-response mechanism that gives access to the server password, making…
published 2021-10-08 5 y ago modified 2026-06-17 4 mo ago also EUVD-2021-23355
- cvss
- 9.8
- version 3.1, NVD
- 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
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.
Exploit prediction
0.69% 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 |
|---|---|---|---|
| NVD | 3.1 | 9.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
| NVD | 2.0 | 7.5 | AV:N/AC:L/Au:N/C:P/I:P/A:P |
Classification
- Weakness
-
- CWE-916 Use of Password Hash With Insufficient Computational Effort
References
-
raw.githubusercontent.com
/reidmefirst/vuln-disclosure/main/2021-02.txt
third-party-advisory
Sources
- CVE List CVE-2021-36767
- NVD CVE-2021-36767
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