CVE-2022-27421Network attack vector

Administrator escalation via unvalidated user modification form

Published Apr 15, 2022 · Updated Aug 3, 2024

Improper input validation in Chamilo LMS 1.11.13 allows remote authenticated users to escalate their accounts to Platform Admin. The user modification form accepts a privilege-bearing change without validating whether the requester is authorized to make it. Access to the form with a high-privilege account is required, and successful exploitation grants full platform-administration privileges.

CVSS severity7.2
High
EPSS probability0.99%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper input validation in Chamilo LMS 1.11.13 allows remote authenticated users to escalate their accounts to Platform Admin. The user modification form accepts a privilege-bearing change without validating whether the requester is authorized to make it. Access to the form with a high-privilege account is required, and successful exploitation grants full platform-administration privileges.

The record

CVE
CVE-2022-27421
Published
Apr 15, 2022
Updated
Aug 3, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-20, T1098
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Apr 15, 2022CVE 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 privilegesauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

6.5NVDAV:N/AC:L/Au:S/C:P/I:P/A:P
7.2NVDCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

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.

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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
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-20Improper Input Validation
T1098Account Manipulation

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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