CVE-2007-3661: Eltima Software Virtual Serial Port (VSPAX) ActiveX control (VSPort.DLL) allows remote attackers to cause a de

Routine

MEDIUM 5.0MITIGATE

CVE-2007-3661 is a medium-severity flaw (CVSS 5.0) affecting virtual serial port. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Eltima Software Virtual Serial Port (VSPAX) ActiveX control (VSPort.DLL) allows remote attackers to cause a denial of service via certain function calls, as demonstrated via the (1) Attach, (2) Write, and (3) WriteStr functions.

Why this priority

No elevated risk signals yet

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

Risk facts

CVSS score	5.0 (Medium)
EPSS exploit chance	1.4% (top 28%)
CISA exploited list	No
Published	2007-07-10
Last modified	2026-06-16

Publisher (CNA): MITRE · Vendor: eltima software

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

Am I affected?

Timeline

2007-07-10 19:30 UTCPublished CVE record published
2026-06-16 22:42 UTCUpdated Record last modified

eltima software virtual serial port MITIGATE

Affected: all versions

Fixed in: no fixed release known

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy virtual-serial-port || rpm -q virtual-serial-port || virtual-serial-port --version

No fixed or unaffected release known

Apply the vendor mitigation from the advisory, disable the affected feature, or restrict network access.

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-2007-3661?

virtual serial port: mitigate or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2007-3661 being exploited?

CVE-2007-3661 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-2007-3661 affect?

CVE-2007-3661 affects virtual serial port. Severity is medium (CVSS 5.0). Eltima Software Virtual Serial Port (VSPAX) ActiveX control (VSPort.DLL) allows remote attackers to cause a denial of service via certain function calls, as demonstrated via the (1) Attach, (2) Write, and (3) WriteStr functions.

How urgent is CVE-2007-3661?

Priority 36/100. No elevated risk signals yet.

References

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