CVE-2025-62425Network attack vector

Account takeover via ignored password-verification result

Published Oct 16, 2025 · Updated Oct 16, 2025

Unverified password change in Element Matrix Authentication Service 0.20.0 through 1.4.0 allows remote authenticated users to alter accounts. The GraphQL password checks treated a completed verification call as success without testing whether its result represented a password mismatch. Exploitation requires an authenticated MAS session and an enabled local password database, enabling password or e-mail changes and account deactivation.

CVSS severity8.3
High
EPSS probability0.45%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Unverified password change in Element Matrix Authentication Service 0.20.0 through 1.4.0 allows remote authenticated users to alter accounts. The GraphQL password checks treated a completed verification call as success without testing whether its result represented a password mismatch. Exploitation requires an authenticated MAS session and an enabled local password database, enabling password or e-mail changes and account deactivation.

The record

CVE
CVE-2025-62425
Published
Oct 16, 2025
Updated
Oct 16, 2025
Vendor
Element HQ
Product
Matrix Authentication Service
Classifications
CWE-620, T1098
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Oct 16, 2025CVE publishedPublication date reported by the CVE source.
  2. Oct 16, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=>= 0.20.0, <= 1.4.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Element HQ · Matrix Authentication Serviceversion=>= 0.20.0, <= 1.4.0

Published CVSS scores

8.3GitHub, Inc.CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/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.

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
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-620Unverified Password Change
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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