CVE-2026-3000: IDExpert Windows Logon Agent developed by Changing has a Remote Code Execution vulnerability, allowing unauthe

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CRITICAL 9.8REMOTEUPGRADE

CVE-2026-3000 is a critical-severity flaw (CVSS 9.8) affecting idexpert. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

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

Why this priority

Critical severity
Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score	9.8 (Critical)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	0.6% (top 53%)
CISA exploited list	No
Weakness	CWE-494
Published	2026-03-02
Last modified	2026-06-17

Publisher (CNA): TWCERT/CC · Vendor: changingtec

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

Am I affected?

Timeline

2026-03-02 07:16 UTCPublished CVE record published
2026-06-17 10:42 UTCUpdated Record last modified

changingtec idexpert UPGRADE

Affected: >= 2.7.3.230719 and <= 2.8.4.250925

Fixed in: newer than 2.8.4.250925

Safe to downgrade to: a release before 2.7.3.230719

1. Check installed version

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

2. UPGRADE to newer than 2.8.4.250925 (Debian / Ubuntu)

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

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade idexpert

Note

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

3. If no update is available yet, DOWNGRADE to a release before 2.7.3.230719 (Debian / Ubuntu)

apt-cache madison idexpert sudo apt install idexpert=<VERSION_BEFORE_2.7.3.230719> sudo apt-mark hold idexpert

3. If no update is available yet, DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list idexpert sudo dnf downgrade idexpert-<VERSION_BEFORE_2.7.3.230719> sudo dnf versionlock add idexpert

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

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-2026-3000?

idexpert: upgrade to newer than 2.8.4.250925. Exact commands for each OS are on this page.

Is CVE-2026-3000 being exploited?

CVE-2026-3000 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-2026-3000 affect?

CVE-2026-3000 affects idexpert. Severity is critical (CVSS 9.8). IDExpert Windows Logon Agent developed by Changing has a Remote Code Execution vulnerability, allowing unauthenticated remote attackers to force the system to download arbitrary DLL files from a remote source and execute them.

How urgent is CVE-2026-3000?

Priority 51/100. Critical severity; Remotely exploitable, no login, no user action

Software pages

Windows vulnerabilities

Related CVEs

CVE-2026-2999 CRITICAL 9.8 UPGRADE IDExpert Windows Logon Agent developed by Changing has a Remote Code Execution vulnerability, allowing unauthe

References

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