CVE-2023-30328
CVSS v3
9.8
CRITICAL
EPSS Score
1.1 %
exploit probability, as of 2026-09-25
CISA KEV
No
known exploited
Exploitation
—
SSVC status
Description
An issue in the helper tool of Mailbutler GmbH Shimo VPN Client for macOS v5.0.4 allows attackers to bypass authentication via PID re-use.
Technical details
- Published
- 2023-05-04
Frequently asked questions
What is CVE-2023-30328?
An issue in the helper tool of Mailbutler GmbH Shimo VPN Client for macOS v5.0.4 allows attackers to bypass authentication via PID re-use.
Is CVE-2023-30328 actively exploited?
Active exploitation of CVE-2023-30328 has not been confirmed. Its EPSS score was 1.1% on 2026-09-25, the estimated probability of exploitation in the next 30 days.
What is the CVSS score for CVE-2023-30328?
CVE-2023-30328 has a CVSS v3 base score of 9.8 (CRITICAL severity).
Is CVE-2023-30328 affecting your environment?
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