CVE-2021-40101Public exploitNetwork attack vector

User account takeover via unverified password changes

Published Nov 30, 2021 · Updated Aug 4, 2024

Incorrect permissions in the Dashboard of Concrete CMS before 8.5.7 allow remote authenticated users with administrator privileges to reset passwords. The change-password action accepts a new password for a selected account without revalidating the acting administrator's current password. Administrative Dashboard access is required; a compromised privileged session can reset another account's password and take control of that account.

CVSS severity7.2
High
EPSS probability2.56%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Incorrect permissions in the Dashboard of Concrete CMS before 8.5.7 allow remote authenticated users with administrator privileges to reset passwords. The change-password action accepts a new password for a selected account without revalidating the acting administrator's current password. Administrative Dashboard access is required; a compromised privileged session can reset another account's password and take control of that account.

The record

CVE
CVE-2021-40101
Published
Nov 30, 2021
Updated
Aug 4, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-732, T1098
Attack vector
network
Privileges
admin

Timeline

How it unfolded

  1. Nov 30, 2021CVE publishedPublication date reported by the CVE source.
  2. Aug 4, 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 privilegesadmin

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

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

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
Privilegesadmin
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-732Incorrect Permission Assignment for Critical Resource
T1098Account Manipulation

Public exploit references

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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