How severe is CVE-2021-36745?

CVE-2021-36745 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2021-36745 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 9% (95th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-36745?

CVE-2021-36745 primarily affects Trendmicro Serverprotect. In total, 5 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2021-36745?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

When was CVE-2021-36745 published?

CVE-2021-36745 was published on 2021-09-29 and last updated on 2026-06-17.

CVE-2021-36745

CVE-2021-36745 is a critical-severity vulnerability in Trendmicro Serverprotect with a CVSS 3.x base score of 9.8. 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-425.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
CVSS v2: 10.0
EPSS exploit prediction: 9% (95th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-425
Affected product: Trendmicro Serverprotect
Published: 2021-09-29
Last modified: 2026-06-17

Description

A vulnerability in Trend Micro ServerProtect for Storage 6.0, ServerProtect for EMC Celerra 5.8, ServerProtect for Network Appliance Filers 5.8, and ServerProtect for Microsoft Windows / Novell Netware 5.8 could allow a remote attacker to bypass authentication on affected installations.

Frequently asked questions

What is CVE-2021-36745?: A vulnerability in Trend Micro ServerProtect for Storage 6.0, ServerProtect for EMC Celerra 5.8, ServerProtect for Network Appliance Filers 5.8, and ServerProtect for Microsoft Windows / Novell Netware 5.8 could allow a remote attacker to bypass authentication on affected installations.
How severe is CVE-2021-36745?: CVE-2021-36745 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2021-36745 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 9% (95th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-36745?: CVE-2021-36745 primarily affects Trendmicro Serverprotect. In total, 5 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2021-36745?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2021-36745 published?: CVE-2021-36745 was published on 2021-09-29 and last updated on 2026-06-17.

References

Affected products (5)

cpe:2.3:a:trendmicro:serverprotect:5.8:*:*:*:*:emc:*:*
cpe:2.3:a:trendmicro:serverprotect:5.8:*:*:*:*:netapp:*:*
cpe:2.3:a:trendmicro:serverprotect:5.8:*:*:*:*:netware:*:*
cpe:2.3:a:trendmicro:serverprotect:5.8:*:*:*:*:windows:*:*
cpe:2.3:a:trendmicro:serverprotect:6.0:*:*:*:*:storage:*:*

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