How severe is CVE-2020-28165?

CVE-2020-28165 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-2020-28165 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (61st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2020-28165?

CVE-2020-28165 affects Easycorp Zentao. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2020-28165?

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-2020-28165 published?

CVE-2020-28165 was published on 2021-08-12 and last updated on 2026-06-17.

CVE-2020-28165

CVE-2020-28165 is a critical-severity vulnerability in Easycorp Zentao 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-434.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
CVSS v2: 7.5
EPSS exploit prediction: 1% (61st percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-434
Affected product: Easycorp Zentao
Published: 2021-08-12
Last modified: 2026-06-17

Description

The EasyCorp ZenTao PMS 12.4.2 application suffers from an arbitrary file upload vulnerability. An attacker can upload arbitrary webshell to the server by using the downloadZipPackage() function.

Frequently asked questions

What is CVE-2020-28165?: The EasyCorp ZenTao PMS 12.4.2 application suffers from an arbitrary file upload vulnerability. An attacker can upload arbitrary webshell to the server by using the downloadZipPackage() function.
How severe is CVE-2020-28165?: CVE-2020-28165 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-2020-28165 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (61st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2020-28165?: CVE-2020-28165 affects Easycorp Zentao. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2020-28165?: 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-2020-28165 published?: CVE-2020-28165 was published on 2021-08-12 and last updated on 2026-06-17.

References

https://www.zentao.net/dynamic/zentaopms12.4.2-80263.html

Affected products (1)

cpe:2.3:a:easycorp:zentao:*:*:*:*:*:*:*:*

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