Zoho ManageEngine ADSelfService Plus before 6112 is vulnerable to mail spoofing.

published 2021-09-21 5y ago modified 2026-06-17 4mo ago also EUVD-2021-23985

cvss: 6.5; version 3.1, NVD
cisa kev: Not listed; not in CISA's catalog
epss: 1.9%; EPSS 1.9% chance of exploitation in 30 days, percentile 80%
public exploits: 0; none known

Patch / fix

fixed in 1 links 1

zohocorp manageengine_admanager_plus 6.1

pitstop.manageengine.com/portal/en/community/topic/adselfservice-plus-6112-hotfix-r… advisory

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Exploit prediction

1.92% chance of exploitation in the next 30 days, higher than 80% of all scored CVEs (FIRST EPSS, 2026-11-09).

Exploits and checks

blog.stmcyber.com https://blog.stmcyber.com/vulns/cve-2021-37420/ referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by	version	score	vector
NVD	3.1	6.5	CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N
NVD	2.0	4.3	AV:N/AC:M/Au:N/C:N/I:P/A:N

Classification

Weakness

CWE-306 Missing Authentication for Critical Functionality

References

pitstop.manageengine.com /portal/en/community/topic/adselfservice-plus-6112-hotfix-release
patch, vendor-advisory
blog.stmcyber.com /vulns/cve-2021-37420/
exploit, third-party-advisory
manageengine.com
product, vendor-advisory

Sources

CVE List CVE-2021-37420
NVD CVE-2021-37420

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