CVE-2021-33527 json
OS Command Injection in mbDIALUP <= 3.9R0.0
published 2021-08-02 5 y ago modified 2026-06-17 4 mo ago also EUVD-2021-20219
- cvss
- 9.8
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 4.5%
- EPSS 4.5% chance of exploitation in 30 days, percentile 91%
- public exploits
- 0
- none known
Summary
In MB connect line mbDIALUP versions <= 3.9R0.0 a remote attacker can send a specifically crafted HTTP request to the service running with NT AUTHORITY\SYSTEM that will not correctly validate the input. This can lead to an arbitrary code execution with the privileges of the service.
Exploit prediction
4.52% chance of exploitation in the next 30 days, higher than 91% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 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 | 10.0 | AV:N/AC:L/Au:N/C:C/I:C/A:C |
Affected products
- MB connect line mbDIALUP
Classification
- Weakness
-
- CWE-20 Improper Input Validation
References
-
cert.vde.com
/de-de/advisories/vde-2021-017
third-party-advisory
Sources
- CVE List CVE-2021-33527
- NVD CVE-2021-33527
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