How severe is CVE-2020-5567?

CVE-2020-5567 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 high, integrity none, and availability none.

Is CVE-2020-5567 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (70th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2020-5567?

CVE-2020-5567 affects Cybozu Garoon. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2020-5567?

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-2020-5567 published?

CVE-2020-5567 was published on 2020-04-28 and last updated on 2026-06-17.

CVE-2020-5567

CVE-2020-5567 is a high-severity vulnerability in Cybozu Garoon 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. The underlying weakness is classified as CWE-287.

Key facts

Severity: High (CVSS 3.x base score 7.5)
CVSS v2: 5.0
EPSS exploit prediction: 1% (70th 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 Application Menu.

Frequently asked questions

What is CVE-2020-5567?: Improper authentication vulnerability in Cybozu Garoon 4.0.0 to 4.10.3 allows remote attackers to obtain data in Application Menu.
How severe is CVE-2020-5567?: CVE-2020-5567 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 high, integrity none, and availability none.
Is CVE-2020-5567 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (70th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2020-5567?: CVE-2020-5567 affects Cybozu Garoon. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2020-5567?: 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-2020-5567 published?: CVE-2020-5567 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

CVE-2014-1987 — Critical (CVSS 10.0): The CGI component in Cybozu Garoon 3.1.0 through 3.7 SP3 allows remote attackers to execute arbitrary commands via…
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CVE-2016-1219 — Critical (CVSS 9.8): Cybozu Garoon before 4.2.2 allows remote attackers to bypass login authentication via vectors related to API use.
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CVE-2018-0607 — High (CVSS 8.8): SQL injection vulnerability in the Notifications application in the Cybozu Garoon 3.5.0 to 4.6.2 allows remote…
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Other CWE-287 (Improper Authentication) vulnerabilities

CVE-2026-45480 — Critical (CVSS 10.0): Improper authentication in Azure Active Directory allows an unauthorized attacker to elevate privileges over a network.
CVE-2026-46389 — Critical (CVSS 10.0): UDS Identity Config builds the Keycloak configuration image (realm, plugins, theme, truststore, JARs) consumed by UDS…
CVE-2026-10611 — Critical (CVSS 10.0): An authentication bypass vulnerability exists in MISP when LDAP mixed authentication is enabled with OTP enforcement.…
CVE-2026-47280 — Critical (CVSS 10.0): Improper authentication in Azure Resource Manager (ARM) allows an unauthorized attacker to elevate privileges over a…
CVE-2026-42822 — Critical (CVSS 10.0): Improper authentication in Azure Local Disconnected Operations allows an unauthorized attacker to elevate privileges…
CVE-2026-20182 — Critical (CVSS 10.0): May 2026: This security advisory provides the details and fix information for a vulnerability that was discovered and…

Browse all CWE-287 (Improper Authentication) vulnerabilities →