How severe is CVE-2021-37539?

CVE-2021-37539 has a CVSS score of 9.8/10, rated CRITICAL. Immediate patching is strongly recommended.

Which packages are affected by CVE-2021-37539?

Affected package information for CVE-2021-37539 is not yet fully mapped. Check the official advisory links for details.

How do I fix CVE-2021-37539?

No fixed version has been published for CVE-2021-37539 yet. Monitor the advisory for updates, apply mitigations recommended by the vendor, and use O3 Security to track when a fix becomes available in your stack.

Is CVE-2021-37539 actively exploited in the wild?

No public exploit code has been indexed for CVE-2021-37539 yet. This does not mean the vulnerability cannot be exploited — absence of public exploits does not imply safety. Apply the recommended fix and use O3 Security to monitor your exposure.

What is the EPSS score for CVE-2021-37539?

CVE-2021-37539 has an EPSS (Exploit Prediction Scoring System) score of 93.4%, placing it in the 100th percentile of all CVEs. EPSS is maintained by FIRST.org and estimates the probability that a vulnerability will be exploited in the wild within the next 30 days. A score above 50% indicates significantly elevated exploitation risk — immediate patching is strongly recommended.

What type of vulnerability is CVE-2021-37539?

CVE-2021-37539 is classified as Unrestricted File Upload (CWE-434). This weakness type describe the underlying flaw category, which helps determine the potential impact and the right class of mitigation.

Which products and versions are affected by CVE-2021-37539?

CVE-2021-37539 affects zohocorp manageengine admanager plus (1 version, e.g. 7.1). Check the affected-products list on this page against your deployed version to confirm exposure.

When was CVE-2021-37539 published, and has it been updated?

CVE-2021-37539 was published on September 27, 2021 and was last updated on November 21, 2024. Advisory data evolves as severity scores, affected ranges, and exploit intelligence are revised — always check the latest version of the advisory before acting.

CVE-2021-37539

CRITICAL

Zoho ManageEngine ADManager Plus before 7111 is vulnerable to unrestricted file which leads to Remote code execution.

Published

Sep 27, 2021

Updated

Nov 21, 2024

Affected

0 pkgs

Patched

None yet

Exploits

None indexed

EPSS Exploitation Probability

via FIRST.org ↗

93.4%probability of exploitation in next 30 days

Very High Risk100th percentile+57.39%

EPSS (Exploit Prediction Scoring System) is a daily probability model maintained by FIRST.org. It estimates the likelihood a CVE will be exploited in production environments within the next 30 days, derived from real-world threat intelligence signals.

Description

Zoho ManageEngine ADManager Plus before 7111 is vulnerable to unrestricted file which leads to Remote code execution.

Affected Products

1 product · 6 configurations

Application

manageengine admanager pluszohocorp

< 7.1

1 version

7.1

Frequently Asked Questions

Zoho ManageEngine ADManager Plus before 7111 is vulnerable to unrestricted file which leads to Remote code execution.

O3 Security · Impact-Aware SCA

Is CVE-2021-37539 in your stack?

O3 detects CVE-2021-37539 across dependencies and uses function-level reachability to confirm whether the vulnerable code path is actually reachable — not just present. No false positives.

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