CVE-2023-40260

Account takeover via MFA code redirection

Published Aug 11, 2023 · Updated Oct 10, 2024

Improper authentication in EmpowerID before 7.205.0.1 allows remote authenticated users to bypass MFA and access a victim account. The account-email change flow accepts the username and password without verifying previously registered MFA, then sends codes to the replacement address. The attacker must know valid first-factor credentials and control the replacement mailbox; successful use grants access as the victim.

CVSS severity9.1
Critical
EPSS probability0.63%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper authentication in EmpowerID before 7.205.0.1 allows remote authenticated users to bypass MFA and access a victim account. The account-email change flow accepts the username and password without verifying previously registered MFA, then sends codes to the replacement address. The attacker must know valid first-factor credentials and control the replacement mailbox; successful use grants access as the victim.

The record

CVE
CVE-2023-40260
Published
Aug 11, 2023
Updated
Oct 10, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-287, T1098
Attack vector
Unavailable
Privileges
authenticated

Timeline

How it unfolded

  1. Aug 11, 2023CVE publishedPublication date reported by the CVE source.
  2. Oct 10, 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 vectorUnavailable in this record.
Required privilegesauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

9.1NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/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.

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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)
VectorUnavailable
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-287Improper Authentication
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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