CVE-2021-36436Public exploitNetwork attack vector

Unauthenticated information disclosure via member ID enumeration

Published Apr 20, 2023 · Updated Feb 5, 2025

Information disclosure in Mobicint Backend for Credit Unions 3 allows remote attackers to retrieve member data through password recovery. The forgotten-password endpoint accepts an attacker-supplied member ID and returns its user-generated label and a partially redacted email address. No authentication is required, and repeated ID submissions permit enumeration of personal information stored in member records.

CVSS severity5.3
Medium
EPSS probability0.52%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Information disclosure in Mobicint Backend for Credit Unions 3 allows remote attackers to retrieve member data through password recovery. The forgotten-password endpoint accepts an attacker-supplied member ID and returns its user-generated label and a partially redacted email address. No authentication is required, and repeated ID submissions permit enumeration of personal information stored in member records.

The record

CVE
CVE-2021-36436
Published
Apr 20, 2023
Updated
Feb 5, 2025
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-640, T1087
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Apr 20, 2023CVE publishedPublication date reported by the CVE source.
  2. Feb 5, 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?

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

5.3NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
5.3CISA-ADPCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/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 exploitPublished

Weakness, pattern, technique

CWE-640Weak Password Recovery Mechanism for Forgotten Password
T1087Account Discovery

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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