CVE-2009-1348: The AV engine before DAT 5600 in McAfee VirusScan, Total Protection, Internet Security, SecurityShield for Mic

This month

HIGH 7.6WATCHLISTMITIGATEMITIGATEMITIGATE

CVE-2009-1348 is a high-severity flaw (CVSS 7.6) affecting active virus defense, active virusscan, email gateway. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

The AV engine before DAT 5600 in McAfee VirusScan, Total Protection, Internet Security, SecurityShield for Microsoft ISA Server, Security for Microsoft Sharepoint, Security for Email Servers, Email Gateway, and Active Virus Defense allows remote attackers to bypass virus detection via (1) an invalid Headflags field in a malformed RAR archive, (2) an invalid Packsize field in a malformed RAR archive, or (3) an invalid Filelength field in a malform

Why this priority

High severity
On your watchlist

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

Risk facts

CVSS score	7.6 (High)
EPSS exploit chance	2.8% (top 13%)
CISA exploited list	No
Weakness	CWE-20
Published	2009-04-30
Last modified	2026-06-16

Publisher (CNA): MITRE · Vendor: mcafee

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

Am I affected?

Timeline

2009-04-30 20:30 UTCPublished CVE record published
2026-06-16 23:07 UTCUpdated Record last modified

mcafee active virus defense 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 active-virus-defense || rpm -q active-virus-defense || active-virus-defense --version

No fixed or unaffected release known

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

mcafee active virusscan 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 active-virusscan || rpm -q active-virusscan || active-virusscan --version

No fixed or unaffected release known

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

mcafee email gateway 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 email-gateway || rpm -q email-gateway || email-gateway --version

No fixed or unaffected release known

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

mcafee internet security suite DOWNGRADE

Affected: all versions · 2004 · 2005 · 2006 · 2009

Fixed in: no fixed release known

Safe to downgrade to: a release before 2004

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 2004 (Debian / Ubuntu)

apt-cache madison internet-security-suite sudo apt install internet-security-suite=<VERSION_BEFORE_2004> 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_2004> 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.

mcafee securityshield for email servers 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 securityshield-for-email-servers || rpm -q securityshield-for-email-servers || securityshield-for-email-servers --version

No fixed or unaffected release known

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

mcafee securityshield for microsoft isa server 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 securityshield-for-microsoft-isa-server || rpm -q securityshield-for-microsoft-isa-server || securityshield-for-microsoft-isa-server --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-2009-1348?

active virus defense: mitigate or apply the listed mitigation; active virusscan: mitigate or apply the listed mitigation; email gateway: mitigate or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2009-1348 being exploited?

CVE-2009-1348 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-2009-1348 affect?

CVE-2009-1348 affects active virus defense, active virusscan, email gateway. Severity is high (CVSS 7.6). The AV engine before DAT 5600 in McAfee VirusScan, Total Protection, Internet Security, SecurityShield for Microsoft ISA Server, Security for Microsoft Sharepoint, Security for Email Servers, Email Gateway, and Active Virus Defense allows r

How urgent is CVE-2009-1348?

Priority 53/100. High severity; On your watchlist

Software pages

SharePoint vulnerabilities · McAfee vulnerabilities

References

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