What is CVE-2021-33527?

CVE-2021-33527 is a critical-severity vulnerability in Mb Connect Line Mbdialup, classified under Improper Input Validation. CVSS score: 9.8/10. Published 2021-08-02.

How severe is CVE-2021-33527?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Improper input validation in Mb Connect Line Mbdialup

CVE-2021-33527

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.

Vulnerability class: Drupalgeddon 2 (CVE-2018-7600)

EPSS: 0.045 (90.6th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

Affected products

Mb Connect Line Mbdialup — versions 3.9R0.0
Mbconnectline Mbdialup

Weakness classification (CWE)

CWE-20 — Improper Input Validation

References

info@cert.vde.com (x_refsource_CONFIRM, Third Party Advisory)

Frequently asked questions

What is CVE-2021-33527?: CVE-2021-33527 is a critical-severity vulnerability in Mb Connect Line Mbdialup, classified under Improper Input Validation. CVSS score: 9.8/10. Published 2021-08-02.
How severe is CVE-2021-33527?: Critical severity. CVSS v3 base score is 9.8 out of 10.