CVE-2023-3897: Username enumeration is possible through Bypassing CAPTCHA in On-premise SureMDM Solution on Windows deploymen

Q: How do I fix CVE-2023-3897?

suremdm: upgrade to newer than 6.31. Exact commands for each OS are on this page.

Q: Is CVE-2023-3897 being exploited?

CVE-2023-3897 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2023-3897 affect?

CVE-2023-3897 affects suremdm. Severity is medium (CVSS 4.8). Username enumeration is possible through Bypassing CAPTCHA in On-premise SureMDM Solution on Windows deployment allows attacker to enumerate local user information via error message. This issue affects SureMDM On-premise: 6.31 and below ve

Q: How urgent is CVE-2023-3897?

Priority 49/100. Public exploit reference; Remotely exploitable, no login, no user action

This week

MEDIUM 4.8REMOTEUPGRADE

CVE-2023-3897 is a medium-severity flaw (CVSS 4.8) affecting suremdm. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Username enumeration is possible through Bypassing CAPTCHA in On-premise SureMDM Solution on Windows deployment allows attacker to enumerate local user information via error message. This issue affects SureMDM On-premise: 6.31 and below version

Why this priority

Public exploit reference
Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score	4.8 (Medium)
Attack vector	Network (remote)
Attack complexity	High
Privileges needed	None
User interaction	None
EPSS exploit chance	3.1% (top 12%)
CISA exploited list	No
Weakness	CWE-203
Published	2023-07-25
Last modified	2026-06-17

Publisher (CNA): 42Gears Mobility Systems Pvt Ltd · Vendor: 42gears

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2023-07-25 09:15 UTCPublished CVE record published
2026-06-17 06:15 UTCUpdated Record last modified

42gears suremdm UPGRADE

Affected: <= 6.31

Fixed in: newer than 6.31

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy suremdm || rpm -q suremdm || suremdm --version

2. UPGRADE to newer than 6.31 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade suremdm

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade suremdm

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

Public exploits and detection

Public code exists for this CVE. Treat unpatched systems as at risk, and only run PoCs in a lab.

Exploit-DB: SureMDM On-premise < 6.31 - CAPTCHA Bypass User Enumeration

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2023-3897?

suremdm: upgrade to newer than 6.31. Exact commands for each OS are on this page.

Is CVE-2023-3897 being exploited?

CVE-2023-3897 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2023-3897 affect?

CVE-2023-3897 affects suremdm. Severity is medium (CVSS 4.8). Username enumeration is possible through Bypassing CAPTCHA in On-premise SureMDM Solution on Windows deployment allows attacker to enumerate local user information via error message. This issue affects SureMDM On-premise: 6.31 and below ve

How urgent is CVE-2023-3897?

Priority 49/100. Public exploit reference; Remotely exploitable, no login, no user action

Software pages

Windows vulnerabilities

References

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