How severe is CVE-2020-15521?

CVE-2020-15521 has a CVSS 3.x base score of 6.1, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.

Is CVE-2020-15521 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (74th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2020-15521?

CVE-2020-15521 primarily affects Zohocorp Manageengine Applications Manager. In total, 88 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2020-15521?

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

When was CVE-2020-15521 published?

CVE-2020-15521 was published on 2020-09-25 and last updated on 2026-06-17.

CVE-2020-15521

CVE-2020-15521 is a medium-severity vulnerability in Zohocorp Manageengine Applications Manager with a CVSS 3.x base score of 6.1. 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-79.

Key facts

Severity: Medium (CVSS 3.x base score 6.1)
CVSS v2: 4.3
EPSS exploit prediction: 2% (74th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-79
Affected product: Zohocorp Manageengine Applications Manager
Published: 2020-09-25
Last modified: 2026-06-17

Description

Zoho ManageEngine Applications Manager before 14 build 14730 has no protection against jsp/header.jsp Cross-site Scripting (XSS) .

Frequently asked questions

What is CVE-2020-15521?: Zoho ManageEngine Applications Manager before 14 build 14730 has no protection against jsp/header.jsp Cross-site Scripting (XSS) .
How severe is CVE-2020-15521?: CVE-2020-15521 has a CVSS 3.x base score of 6.1, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.
Is CVE-2020-15521 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (74th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2020-15521?: CVE-2020-15521 primarily affects Zohocorp Manageengine Applications Manager. In total, 88 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2020-15521?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2020-15521 published?: CVE-2020-15521 was published on 2020-09-25 and last updated on 2026-06-17.

References

Affected products (88)

cpe:2.3:a:zohocorp:manageengine_applications_manager:*:*:*:*:*:*:*:*
cpe:2.3:a:zohocorp:manageengine_applications_manager:14.0:-:*:*:*:*:*:*
cpe:2.3:a:zohocorp:manageengine_applications_manager:14.0:build14000:*:*:*:*:*:*
cpe:2.3:a:zohocorp:manageengine_applications_manager:14.0:build14010:*:*:*:*:*:*
cpe:2.3:a:zohocorp:manageengine_applications_manager:14.0:build14020:*:*:*:*:*:*
cpe:2.3:a:zohocorp:manageengine_applications_manager:14.0:build14030:*:*:*:*:*:*
cpe:2.3:a:zohocorp:manageengine_applications_manager:14.0:build14040:*:*:*:*:*:*
cpe:2.3:a:zohocorp:manageengine_applications_manager:14.0:build14050:*:*:*:*:*:*
cpe:2.3:a:zohocorp:manageengine_applications_manager:14.0:build14060:*:*:*:*:*:*
cpe:2.3:a:zohocorp:manageengine_applications_manager:14.0:build14070:*:*:*:*:*:*
cpe:2.3:a:zohocorp:manageengine_applications_manager:14.0:build14071:*:*:*:*:*:*
cpe:2.3:a:zohocorp:manageengine_applications_manager:14.0:build14072:*:*:*:*:*:*
cpe:2.3:a:zohocorp:manageengine_applications_manager:14.0:build14073:*:*:*:*:*:*
cpe:2.3:a:zohocorp:manageengine_applications_manager:14.0:build14080:*:*:*:*:*:*
cpe:2.3:a:zohocorp:manageengine_applications_manager:14.0:build14090:*:*:*:*:*:*
cpe:2.3:a:zohocorp:manageengine_applications_manager:14.0:build14100:*:*:*:*:*:*
cpe:2.3:a:zohocorp:manageengine_applications_manager:14.0:build14110:*:*:*:*:*:*
cpe:2.3:a:zohocorp:manageengine_applications_manager:14.0:build14120:*:*:*:*:*:*
cpe:2.3:a:zohocorp:manageengine_applications_manager:14.0:build14130:*:*:*:*:*:*
cpe:2.3:a:zohocorp:manageengine_applications_manager:14.0:build14140:*:*:*:*:*:*
cpe:2.3:a:zohocorp:manageengine_applications_manager:14.0:build14150:*:*:*:*:*:*
cpe:2.3:a:zohocorp:manageengine_applications_manager:14.0:build14160:*:*:*:*:*:*
cpe:2.3:a:zohocorp:manageengine_applications_manager:14.0:build14170:*:*:*:*:*:*
cpe:2.3:a:zohocorp:manageengine_applications_manager:14.0:build14180:*:*:*:*:*:*
cpe:2.3:a:zohocorp:manageengine_applications_manager:14.0:build14190:*:*:*:*:*:*
cpe:2.3:a:zohocorp:manageengine_applications_manager:14.0:build14200:*:*:*:*:*:*
cpe:2.3:a:zohocorp:manageengine_applications_manager:14.0:build14210:*:*:*:*:*:*
cpe:2.3:a:zohocorp:manageengine_applications_manager:14.0:build14220:*:*:*:*:*:*
cpe:2.3:a:zohocorp:manageengine_applications_manager:14.0:build14230:*:*:*:*:*:*
cpe:2.3:a:zohocorp:manageengine_applications_manager:14.0:build14240:*:*:*:*:*:*
cpe:2.3:a:zohocorp:manageengine_applications_manager:14.0:build14250:*:*:*:*:*:*
cpe:2.3:a:zohocorp:manageengine_applications_manager:14.0:build14260:*:*:*:*:*:*
cpe:2.3:a:zohocorp:manageengine_applications_manager:14.0:build14261:*:*:*:*:*:*
cpe:2.3:a:zohocorp:manageengine_applications_manager:14.0:build14262:*:*:*:*:*:*
cpe:2.3:a:zohocorp:manageengine_applications_manager:14.0:build14270:*:*:*:*:*:*
cpe:2.3:a:zohocorp:manageengine_applications_manager:14.0:build14280:*:*:*:*:*:*
cpe:2.3:a:zohocorp:manageengine_applications_manager:14.0:build14290:*:*:*:*:*:*
cpe:2.3:a:zohocorp:manageengine_applications_manager:14.0:build14300:*:*:*:*:*:*
cpe:2.3:a:zohocorp:manageengine_applications_manager:14.0:build14310:*:*:*:*:*:*
cpe:2.3:a:zohocorp:manageengine_applications_manager:14.0:build14330:*:*:*:*:*:*

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