CVE-2021-27214Network attack vector

Blind server requests and XSS via servlet input

Published Feb 19, 2021 · Updated Aug 3, 2024

SSRF in the ProductConfig servlet in Zoho ManageEngine ADSelfService Plus through 6013 allows remote attackers to issue blind HTTP requests. The servlet uses request-controlled input to make outbound HTTP requests without validating the destination; the same request path can inject script into the administrative interface. No authentication is required to reach the servlet, but browser-based script execution requires an administrator to interact with the attack mechanism.

CVSS severity6.1
Medium
EPSS probability2.04%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

SSRF in the ProductConfig servlet in Zoho ManageEngine ADSelfService Plus through 6013 allows remote attackers to issue blind HTTP requests. The servlet uses request-controlled input to make outbound HTTP requests without validating the destination; the same request path can inject script into the administrative interface. No authentication is required to reach the servlet, but browser-based script execution requires an administrator to interact with the attack mechanism.

The record

CVE
CVE-2021-27214
Published
Feb 19, 2021
Updated
Aug 3, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-79, CWE-918, T1204.001
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Feb 19, 2021CVE publishedPublication date reported by the CVE source.
  2. Aug 3, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

6.1NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
4.3NIST NVDAV:N/AC:M/Au:N/C:N/I:P/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
CWE-918Server-Side Request Forgery (SSRF)
T1204.001Malicious Link

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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