CVE-2009-1666: Multiple unspecified vulnerabilities in CycloMedia CycloScopeLite 2.50.3.0 allow remote attackers to execute a

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HIGH 9.3DOWNGRADE

CVE-2009-1666 is a high-severity flaw (CVSS 9.3) affecting cycloscopelite. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Multiple unspecified vulnerabilities in CycloMedia CycloScopeLite 2.50.3.0 allow remote attackers to execute arbitrary code via the ReturnConnection method in (1) CM_ADOConnection.dll, (2) CM_AddressInfoDBC.dll, and (3) CM_RecordingLocationDBC.dll, related to improper dereferencing. NOTE: the provenance of this information is unknown; the details are obtained solely from third party information.

Why this priority

Critical severity

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score	9.3 (High)
EPSS exploit chance	2.9% (top 13%)
CISA exploited list	No
Published	2009-05-18
Last modified	2026-06-16

Publisher (CNA): MITRE · Vendor: cyclomedia

Last updated 2026-06-16 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2009-05-18 18:30 UTCPublished CVE record published
2026-06-16 23:07 UTCUpdated Record last modified

cyclomedia cycloscopelite DOWNGRADE

Affected: 2.50.3.0

Fixed in: no fixed release known

Safe to downgrade to: a release before 2.50.3.0

1. Check installed version

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

2. No fixed release: DOWNGRADE to a release before 2.50.3.0 (Debian / Ubuntu)

apt-cache madison cycloscopelite sudo apt install cycloscopelite=<VERSION_BEFORE_2.50.3.0> sudo apt-mark hold cycloscopelite

2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list cycloscopelite sudo dnf downgrade cycloscopelite-<VERSION_BEFORE_2.50.3.0> sudo dnf versionlock add cycloscopelite

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-2009-1666?

cycloscopelite: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2009-1666 being exploited?

CVE-2009-1666 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-2009-1666 affect?

CVE-2009-1666 affects cycloscopelite. Severity is high (CVSS 9.3). Multiple unspecified vulnerabilities in CycloMedia CycloScopeLite 2.50.3.0 allow remote attackers to execute arbitrary code via the ReturnConnection method in (1) CM_ADOConnection.dll, (2) CM_AddressInfoDBC.dll, and (3) CM_RecordingLocation

How urgent is CVE-2009-1666?

Priority 54/100. Critical severity

References

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