How severe is CVE-2020-5563?

CVE-2020-5563 has a CVSS 3.x base score of 5.3, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is low, integrity none, and availability none.

Is CVE-2020-5563 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (65th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2020-5563?

CVE-2020-5563 affects Cybozu Garoon. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2020-5563?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2020-5563 published?

CVE-2020-5563 was published on 2020-04-28 and last updated on 2026-06-17.

CVE-2020-5563

CVE-2020-5563 is a medium-severity vulnerability in Cybozu Garoon with a CVSS 3.x base score of 5.3. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-287.

Key facts

Severity: Medium (CVSS 3.x base score 5.3)
CVSS v2: 5.0
EPSS exploit prediction: 1% (65th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-287
Affected product: Cybozu Garoon
Published: 2020-04-28
Last modified: 2026-06-17

Description

Improper authentication vulnerability in Cybozu Garoon 4.0.0 to 4.10.3 allows remote attackers to obtain data in the affected product via the API.

Frequently asked questions

What is CVE-2020-5563?: Improper authentication vulnerability in Cybozu Garoon 4.0.0 to 4.10.3 allows remote attackers to obtain data in the affected product via the API.
How severe is CVE-2020-5563?: CVE-2020-5563 has a CVSS 3.x base score of 5.3, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is low, integrity none, and availability none.
Is CVE-2020-5563 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (65th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2020-5563?: CVE-2020-5563 affects Cybozu Garoon. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2020-5563?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2020-5563 published?: CVE-2020-5563 was published on 2020-04-28 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:cybozu:garoon:*:*:*:*:*:*:*:*

More vulnerabilities in Cybozu Garoon

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