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CVE-2021-28958

70
FAUCET Score

CVE-2021-28958 is a critical unauthenticated Remote Code Execution vulnerability affecting Zoho ManageEngine ADSelfService Plus through version 6101, specifically during password change operations. With a CVSS score of 9.8, it allows attackers to execute arbitrary code remotely with low attack complexity and no user interaction, leading to complete compromise of confidentiality, integrity, and availability. While not listed in CISA KEV, this vulnerability has been actively exploited in the wild, as reported by BleepingComputer, and has garnered significant community discussion and media coverage despite no public exploit code being readily available.

Impacted Technologies

VendorProductVersion(s)CPE
4.5CPE matchmatch criteria
cpe:2.3:a:zohocorp:manageengine_adselfservice_plus:4.5:4510:*:*:*:*:*:*
4.5CPE matchmatch criteria
cpe:2.3:a:zohocorp:manageengine_adselfservice_plus:4.5:4511:*:*:*:*:*:*
4.5CPE matchmatch criteria
cpe:2.3:a:zohocorp:manageengine_adselfservice_plus:4.5:4520:*:*:*:*:*:*
4.5CPE matchmatch criteria
cpe:2.3:a:zohocorp:manageengine_adselfservice_plus:4.5:4522:*:*:*:*:*:*
4.5CPE matchmatch criteria
cpe:2.3:a:zohocorp:manageengine_adselfservice_plus:4.5:4531:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

9.8CRITICAL

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
73.13%
Probability of exploitation in next 30 days
EPSS Percentile
99.4%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.7313 is in the 98th percentile among its peer group of 36,897 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.

Media Mentions

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

blog.stmcyber.com / vulns/cve-2021-28958
Third Party Advisory
pitstop.manageengine.com / portal/en/community/topic/adselfservice-plus-6102-released-with-an-important-security-fix-21-3-2021
Vendor Advisory
manageengine.com
Vendor Advisory
manageengine.com / products/self-service-password/release-notes.html
Release NotesVendor Advisory