dbcve.org
IdexpertApplication · Changingtec

CVE-2026-2999

CRITICAL · 9.8 CVSS v3.1 Published 2026-03-02
Fix available
A fix is available. Upgrade to after 2.8.4.250925 or later.
See remediation →
100/100
Remediation priority · Urgent
Remotely reachable No privileges Zero-click Patch available

Official description Straight from the sourceThe vendor's or NVD's own wording, published unedited. Authoritative, but often terse — it says what broke, rarely what to do.

NVD · unedited
IDExpert Windows Logon Agent developed by Changing has a Remote Code Execution vulnerability, allowing unauthenticated remote attackers to force the system to download arbitrary executable files from a remote source and execute them.

Technical summary Written by usOur analysis, written from the advisory, the CVSS vector and the affected-version data. It adds context the advisory leaves out, and never invents facts that are not in the source.

dbcve analysis · high confidence

The IDExpert Windows Logon Agent contains an RCE vulnerability that allows unauthenticated remote attackers to force the application to download arbitrary executable files from a remote URL and execute them on the target system. This results in complete compromise of the affected machine.

MitigationApply vendor-supplied patches or updates for IDExpert Windows Logon Agent immediately. Until patched, network segmentation and restricting outbound connections from affected systems may reduce exposure.

Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.

Affected products & versions What the vendor confirmedThe version ranges the vendor confirmed as vulnerable. If your version sits inside a range here, treat yourself as exposed until you have upgraded.

NVD · CPE data
IdexpertApplication
Affected:>= 2.7.3.230719, <= 2.8.4.250925

CVSS breakdown How the score is builtThe industry scoring standard. It rates how the flaw is reached, what it takes to exploit, and what an attacker gains — the score is derived from those, not the other way round.

From the vector
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Am I affected? How to checkSteps we derive from the advisory and the affected-version data, so you can decide whether this CVE reaches your setup. They are a guide, not a scan — your own configuration is the authority.

dbcve checks

Work through these to decide whether this CVE applies to you.

  1. Identify if IDExpert Windows Logon Agent is installed
    Check for the presence of IDExpert installation directory (typically in Program Files or Program Files (x86)) or look for service named 'IDExpert' or 'IdexpertLogonAgent' in Windows Services (services.msc)
    Affected if The application is installed and the service exists on the system
  2. Check installed version of IDExpert
    Open Windows Registry key HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\{ProductGUID} or look in Add/Remove Programs for the version, or check the version property of the executable in the installation folder
    Affected if The installed version falls within >= 2.7.3.230719 and <= 2.8.4.250925
  3. Verify if the logon agent service is running
    Open services.msc and look for IDExpert-related service, or run 'sc query' for IDExpert services to determine if the vulnerable component is active
    Affected if The IDExpert logon agent service is currently running
  4. Check network exposure of the service
    Use 'netstat -an' or Windows Firewall with Advanced Security inbound rules to determine if the IDExpert service port (commonly TCP 8080 or configured port) is listening on external interfaces or is accessible from non-localhost addresses
    Affected if The service is listening on 0.0.0.0 or an external IP address rather than only 127.0.0.1 localhost

If IDExpert Windows Logon Agent is installed with a version between 2.7.3.230719 and 2.8.4.250925 and the service is running and network-accessible, the system is affected by this unauthenticated RCE vulnerability.

Generated from the published advisory. Verify against your own configuration.

Check your environment

Paste your version and any relevant configuration and it will be compared against the affected criteria above. Do not include secrets or credentials.

AI-assisted, checked against the advisory. Informational, not a guarantee.

Remediation Closing itWhat it takes to close this. Where a vendor fix exists we point at it; where none exists we say so plainly, and can build one. Effort estimates are scoped from the advisory, not from your codebase.

dbcve · scoped
Upgrade available Upgrade to a release after 2.8.4.250925
Vendor patch www.changingtec.com →
Interim mitigation

Apply vendor-supplied patches or updates for IDExpert Windows Logon Agent immediately. Until patched, network segmentation and restricting outbound connections from affected systems may reduce exposure.

Recommended fix Moderate confidence
  1. 1. Identify the current version of IDExpert Windows Logon Agent installed on the system
  2. 2. Navigate to the vendor patch page at https://www.changingtec.com/news_detail.jsp?item_id=348 to obtain the vendor-provided patch or fixed version information
  3. 3. Apply the vendor patch or upgrade to the fixed version as specified by Changing in the security advisory
  4. 4. Verify that the patch/upgrade was successfully applied by checking the IDExpert version
  5. 5. Test that the RCE vulnerability is no longer exploitable - the system should no longer download and execute arbitrary files from remote sources without validation

Generated from the published advisory — verify against the referenced sources before acting.

Fix this in Idexpert Scoped from the published advisory
  • Consultation3.0 h
  • Implementation4.0 h
  • Testing4.0 h
  • Review / QA2.0 h
13.0 hours of engineering $2,280
Get the upgrade done

An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $3,648.

Scan for this in your stack

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References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.

Primary sources

Practitioner notes

Contributed

Peer-ranked notes from engineers who’ve handled CVE-2026-2999 in production — separate from our analysis above.

No notes yet

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What this is

A place for practitioners to share what actually worked: a mitigation you’ve tested, a configuration change, a version- or environment-specific caveat, or a link to a verified patch. The most useful notes rise to the top as peers upvote them, so the signal stays high.

What belongs here
  • Verified mitigations, workarounds, and config changes
  • Version or environment caveats, and links to real fixes
  • No weaponised exploit code, or anything meant to cause harm
  • No spam, self-promotion, credentials, or personal data