CVE-2021-40539

unknown KEV

Published 2021-11-03 · Modified 2021-11-03

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CVSS v3

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CVSS v4 NEW

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not yet in upstream

VIR risk

2.5

Description

Zoho ManageEngine ADSelfService Plus contains an authentication bypass vulnerability affecting the REST API URLs which allow for remote code execution.

CISA KEV

Vendor: Zoho
Product: ManageEngine
Due date: 2021-11-17

Predictions

Exploit likelihood

99%

Patch ETA

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Heuristic predictions, AS-IS, for prioritization only.

Mitigations

No mitigations published for this CVE yet.

The vendor-content worker queues fetches as references arrive (check back in a few minutes). Or — if you've already worked around this in production — publish your fix to the community-verified tier.

✚ Propose a mitigation on Community → Mitigations published via the community go through AI scoring + 2 human reviewers + 7-day silent objection window before landing here with source_tier=community-verified.

Exploits

Public proof-of-concept code below. AS-IS, for defenders and authorised testing only.

Metasploit modules

exploit_windows/http/manageengine_adselfservice_plus_cve_2021_40539 rank 600

ManageEngine ADSelfService Plus CVE-2021-40539

Source fetch failed: fetch_error — view the original via the link above.

References

https://nvd.nist.gov/vuln/detail/CVE-2021-40539

Community-verified mitigations for this CVE will appear above when contributors publish them.

Verify integrity in audit chain (admin only). AS-IS.