How severe is CVE-2020-15601?

CVE-2020-15601 has a CVSS 3.x base score of 8.1, rated high severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2020-15601 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (84th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2020-15601?

CVE-2020-15601 primarily affects Trendmicro Deep Security Manager. In total, 4 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2020-15601?

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-2020-15601 published?

CVE-2020-15601 was published on 2020-08-27 and last updated on 2026-06-17.

CVE-2020-15601

CVE-2020-15601 is a high-severity vulnerability in Trendmicro Deep Security Manager with a CVSS 3.x base score of 8.1. 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 8.1)
CVSS v2: 5.1
EPSS exploit prediction: 3% (84th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-287
Affected product: Trendmicro Deep Security Manager
Published: 2020-08-27
Last modified: 2026-06-17

Description

If LDAP authentication is enabled, an LDAP authentication bypass vulnerability in Trend Micro Deep Security 10.x-12.x could allow an unauthenticated attacker with prior knowledge of the targeted organization to bypass manager authentication. Enabling multi-factor authentication prevents this attack. Installations using manager native authentication or SAML authentication are not impacted by this vulnerability.

Frequently asked questions

What is CVE-2020-15601?: If LDAP authentication is enabled, an LDAP authentication bypass vulnerability in Trend Micro Deep Security 10.x-12.x could allow an unauthenticated attacker with prior knowledge of the targeted organization to bypass manager authentication. Enabling multi-factor authentication prevents this attack. Installations using manager native authentication or SAML authentication are not impacted by this vulnerability.
How severe is CVE-2020-15601?: CVE-2020-15601 has a CVSS 3.x base score of 8.1, rated high severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2020-15601 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (84th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2020-15601?: CVE-2020-15601 primarily affects Trendmicro Deep Security Manager. In total, 4 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2020-15601?: 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-2020-15601 published?: CVE-2020-15601 was published on 2020-08-27 and last updated on 2026-06-17.

References

Affected products (4)

cpe:2.3:a:trendmicro:deep_security_manager:10.0:-:*:*:*:*:*:*
cpe:2.3:a:trendmicro:deep_security_manager:11.0:-:*:*:*:*:*:*
cpe:2.3:a:trendmicro:deep_security_manager:12.0:-:*:*:*:*:*:*
cpe:2.3:a:trendmicro:vulnerability_protection:2.0:sp2:*:*:*:*:*:*

More vulnerabilities in Trendmicro Deep Security Manager

CVE-2020-15605 — High (CVSS 8.1): If LDAP authentication is enabled, an LDAP authentication bypass vulnerability in Trend Micro Vulnerability Protection…
CVE-2020-8602 — High (CVSS 7.2): A vulnerability in the management consoles of Trend Micro Deep Security 10.0-12.0 and Trend Micro Vulnerability…
CVE-2019-9488 — Medium (CVSS 4.9): Trend Micro Deep Security Manager (10.x, 11.x) and Vulnerability Protection (2.0) are vulnerable to a XML External…

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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 →