CVE-2007-3493: A certain ActiveX control in NCTWavChunksEditor2.dll 2.6.1.148 in NCTAudioStudio (NCTAudioStudio2) 2.7, as use

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HIGH 7.5WATCHLISTDOWNGRADEDOWNGRADEDOWNGRADE

CVE-2007-3493 is a high-severity flaw (CVSS 7.5) affecting internet explorer, nctaudiostudio, nctwavchunkseditor2.dll. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

A certain ActiveX control in NCTWavChunksEditor2.dll 2.6.1.148 in NCTAudioStudio (NCTAudioStudio2) 2.7, as used by Sienzo DMM and probably other products, allows remote attackers to create or overwrite arbitrary files via a full pathname in the argument to the CreateFile method, a different product than CVE-2007-3400.

Why this priority

High severity
EPSS top 2%: very likely to be exploited
Public exploit reference
On your watchlist

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

Risk facts

CVSS score	7.5 (High)
EPSS exploit chance	31.3% (top 2%)
CISA exploited list	No
Published	2007-06-29
Last modified	2026-06-16

Publisher (CNA): MITRE · Vendor: microsoft · nctsoft products

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

Am I affected?

Timeline

2007-06-29 18:30 UTCPublished CVE record published
2026-06-16 22:42 UTCUpdated Record last modified

microsoft internet explorer DOWNGRADE

Affected: 7.0

Fixed in: no fixed release known

Safe to downgrade to: a release before 7.0

1. Check installed version

apt-cache policy internet-explorer || rpm -q internet-explorer || internet-explorer --version

2. No fixed release: DOWNGRADE to a release before 7.0 (Debian / Ubuntu)

apt-cache madison internet-explorer sudo apt install internet-explorer=<VERSION_BEFORE_7.0> sudo apt-mark hold internet-explorer

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

dnf --showduplicates list internet-explorer sudo dnf downgrade internet-explorer-<VERSION_BEFORE_7.0> sudo dnf versionlock add internet-explorer

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.

nctsoft products nctaudiostudio DOWNGRADE

Affected: 2.7

Fixed in: no fixed release known

Safe to downgrade to: a release before 2.7

1. Check installed version

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

2. No fixed release: DOWNGRADE to a release before 2.7 (Debian / Ubuntu)

apt-cache madison nctaudiostudio sudo apt install nctaudiostudio=<VERSION_BEFORE_2.7> sudo apt-mark hold nctaudiostudio

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

dnf --showduplicates list nctaudiostudio sudo dnf downgrade nctaudiostudio-<VERSION_BEFORE_2.7> sudo dnf versionlock add nctaudiostudio

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.

nctsoft products nctwavchunkseditor2.dll DOWNGRADE

Affected: 2.6.1.148

Fixed in: no fixed release known

Safe to downgrade to: a release before 2.6.1.148

1. Check installed version

apt-cache policy nctwavchunkseditor2.dll || rpm -q nctwavchunkseditor2.dll || nctwavchunkseditor2.dll --version

2. No fixed release: DOWNGRADE to a release before 2.6.1.148 (Debian / Ubuntu)

apt-cache madison nctwavchunkseditor2.dll sudo apt install nctwavchunkseditor2.dll=<VERSION_BEFORE_2.6.1.148> sudo apt-mark hold nctwavchunkseditor2.dll

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

dnf --showduplicates list nctwavchunkseditor2.dll sudo dnf downgrade nctwavchunkseditor2.dll-<VERSION_BEFORE_2.6.1.148> sudo dnf versionlock add nctwavchunkseditor2.dll

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.

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: NCTAudioStudio2 - ActiveX DLL 2.6.1.148 'CreateFile()'/ Insecure Method

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-2007-3493?

internet explorer: downgrade or apply the listed mitigation; nctaudiostudio: downgrade or apply the listed mitigation; nctwavchunkseditor2.dll: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2007-3493 being exploited?

CVE-2007-3493 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-2007-3493 affect?

CVE-2007-3493 affects internet explorer, nctaudiostudio, nctwavchunkseditor2.dll. Severity is high (CVSS 7.5). A certain ActiveX control in NCTWavChunksEditor2.dll 2.6.1.148 in NCTAudioStudio (NCTAudioStudio2) 2.7, as used by Sienzo DMM and probably other products, allows remote attackers to create or overwrite arbitrary files via a full pathname in

How urgent is CVE-2007-3493?

Priority 61/100. High severity; EPSS top 2%: very likely to be exploited; Public exploit reference; On your watchlist

Software pages

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References

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