CVE-2020-5622

CVE-2020-5622 is a high-severity vulnerability in Shadan-kun Server Security Type with a CVSS 3.x base score of 7.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Description

Shadankun Server Security Type (excluding normal blocking method types) Ver.1.5.3 and earlier allows remote attackers to cause a denial of service which may result in not being able to add newly detected attack source IP addresses as blocking targets for about 10 minutes via a specially crafted request.

Frequently asked questions

What is CVE-2020-5622?
Shadankun Server Security Type (excluding normal blocking method types) Ver.1.5.3 and earlier allows remote attackers to cause a denial of service which may result in not being able to add newly detected attack source IP addresses as blocking targets for about 10 minutes via a specially crafted request.
How severe is CVE-2020-5622?
CVE-2020-5622 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2020-5622 being actively exploited?
It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (67th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2020-5622?
CVE-2020-5622 affects Shadan-kun Server Security Type. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2020-5622?
Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2020-5622 published?
CVE-2020-5622 was published on 2020-09-02 and last updated on 2026-06-17.

References

Affected products (1)