CVE-2023-3897Public exploitNetwork attack vector

Username enumeration via CAPTCHA-bypassing password reset errors

Published Jul 25, 2023 · Updated Feb 13, 2025

Observable discrepancy in 42Gears SureMDM On-Premise 6.31 and earlier allows remote attackers to enumerate usernames via password reset. The forgot-password component accepts requests that bypass CAPTCHA and returns error messages that distinguish whether a supplied local user exists. Access to the on-premise interface is sufficient; no authentication or user interaction is required, and the documented consequence is account-existence disclosure.

CVSS severity4.8
Medium
EPSS probability3.06%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Observable discrepancy in 42Gears SureMDM On-Premise 6.31 and earlier allows remote attackers to enumerate usernames via password reset. The forgot-password component accepts requests that bypass CAPTCHA and returns error messages that distinguish whether a supplied local user exists. Access to the on-premise interface is sufficient; no authentication or user interaction is required, and the documented consequence is account-existence disclosure.

The record

CVE
CVE-2023-3897
Published
Jul 25, 2023
Updated
Feb 13, 2025
Vendor
42Gears
Product
SureMDM On-Premise
Classifications
CWE-203, CAPEC-261, T1087
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jul 25, 2023CVE publishedPublication date reported by the CVE source.
  2. Feb 13, 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=6.31

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

42Gears · SureMDM On-Premiseversion=6.31

Published CVSS scores

5.3NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
4.842GearsCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:L

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-203Observable Discrepancy
CAPEC-261Fuzzing for garnering other adjacent user/sensitive data
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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