CVE-2006-6496: The (1) VetMONNT.sys and (2) VetFDDNT.sys drivers in CA Anti-Virus 2007 8.1, Anti-Virus for Vista Beta 8.2, an

Routine

MEDIUM 6.6DOWNGRADEDOWNGRADE

CVE-2006-6496 is a medium-severity flaw (CVSS 6.6) affecting etrust antivirus, internet security suite. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

The (1) VetMONNT.sys and (2) VetFDDNT.sys drivers in CA Anti-Virus 2007 8.1, Anti-Virus for Vista Beta 8.2, and CA Internet Security Suite 2007 v3.0 do not properly handle NULL buffers, which allows local users with administrative access to cause a denial of service (system crash) via certain IOCTLs.

Why this priority

No elevated risk signals yet

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

Risk facts

CVSS score	6.6 (Medium)
EPSS exploit chance	0.4% (top 68%)
CISA exploited list	No
Published	2006-12-13
Last modified	2026-06-16

Publisher (CNA): MITRE · Vendor: broadcom

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

Am I affected?

Timeline

2006-12-13 21:28 UTCPublished CVE record published
2026-06-16 22:33 UTCUpdated Record last modified

broadcom etrust antivirus DOWNGRADE

Affected: 8.1 · 8.2 beta

Fixed in: no fixed release known

Safe to downgrade to: a release before 8.1

1. Check installed version

apt-cache policy etrust-antivirus || rpm -q etrust-antivirus || etrust-antivirus --version

2. No fixed release: DOWNGRADE to a release before 8.1 (Debian / Ubuntu)

apt-cache madison etrust-antivirus sudo apt install etrust-antivirus=<VERSION_BEFORE_8.1> sudo apt-mark hold etrust-antivirus

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

dnf --showduplicates list etrust-antivirus sudo dnf downgrade etrust-antivirus-<VERSION_BEFORE_8.1> sudo dnf versionlock add etrust-antivirus

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.

broadcom internet security suite DOWNGRADE

Affected: 3.0

Fixed in: no fixed release known

Safe to downgrade to: a release before 3.0

1. Check installed version

apt-cache policy internet-security-suite || rpm -q internet-security-suite || internet-security-suite --version

2. No fixed release: DOWNGRADE to a release before 3.0 (Debian / Ubuntu)

apt-cache madison internet-security-suite sudo apt install internet-security-suite=<VERSION_BEFORE_3.0> sudo apt-mark hold internet-security-suite

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

dnf --showduplicates list internet-security-suite sudo dnf downgrade internet-security-suite-<VERSION_BEFORE_3.0> sudo dnf versionlock add internet-security-suite

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-2006-6496?

etrust antivirus: downgrade or apply the listed mitigation; internet security suite: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2006-6496 being exploited?

CVE-2006-6496 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-2006-6496 affect?

CVE-2006-6496 affects etrust antivirus, internet security suite. Severity is medium (CVSS 6.6). The (1) VetMONNT.sys and (2) VetFDDNT.sys drivers in CA Anti-Virus 2007 8.1, Anti-Virus for Vista Beta 8.2, and CA Internet Security Suite 2007 v3.0 do not properly handle NULL buffers, which allows local users with administrative access to

How urgent is CVE-2006-6496?

Priority 31/100. No elevated risk signals yet.

Related CVEs

CVE-2009-3588 MEDIUM 4.3 DOWNGRADE DOWNGRADE Unspecified vulnerability in the arclib component in the Anti-Virus engine in CA Anti-Virus for the Enterprise
CVE-2009-3587 HIGH 9.3 DOWNGRADE DOWNGRADE Unspecified vulnerability in the arclib component in the Anti-Virus engine in CA Anti-Virus for the Enterprise
CVE-2007-2864 HIGH 9.3 DOWNGRADE DOWNGRADE Stack-based buffer overflow in the Anti-Virus engine before content update 30.6 in multiple CA (formerly Compu
CVE-2006-3223 HIGH 7.5 DOWNGRADE DOWNGRADE Format string vulnerability in CA Integrated Threat Management (ITM), eTrust Antivirus (eAV), and eTrust PestP
CVE-2005-3372 MEDIUM 5.1 DOWNGRADE Multiple interpretation error in eTrust CA 7.0.1.4 with the 11.9.1 engine allows remote attackers to bypass vi

References

← Back to latest CVEs