CVE-2020-23622
CVSS v3
7.5
HIGH
EPSS Score
1.1 %
exploit probability, as of 2026-09-25
CISA KEV
No
known exploited
Exploitation
—
SSVC status
Description
An issue in the UPnP protocol in 4thline cling 2.0.0 through 2.1.2 allows remote attackers to cause a denial of service via an unchecked CALLBACK parameter in the request header
Technical details
- Published
- 2022-08-15
Frequently asked questions
What is CVE-2020-23622?
An issue in the UPnP protocol in 4thline cling 2.0.0 through 2.1.2 allows remote attackers to cause a denial of service via an unchecked CALLBACK parameter in the request header
Is CVE-2020-23622 actively exploited?
Active exploitation of CVE-2020-23622 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-2020-23622?
CVE-2020-23622 has a CVSS v3 base score of 7.5 (HIGH severity).
Is CVE-2020-23622 affecting your environment?
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