CVE-2005-3370: Multiple interpretation error in ArcaVir 2005 package 2005-06-21 allows remote attackers to bypass virus scann

Routine

MEDIUM 5.1DOWNGRADE

CVE-2005-3370 is a medium-severity flaw (CVSS 5.1) affecting arcavir 2005. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Multiple interpretation error in ArcaVir 2005 package 2005-06-21 allows remote attackers to bypass virus scanning via a file such as BAT, HTML, and EML with an "MZ" magic byte sequence which is normally associated with EXE, which causes the file to be treated as a safe type that could still be executed as a dangerous file type by applications on the end system, as demonstrated by a "triple headed" program that contains EXE, EML, and HTML content,

Why this priority

No elevated risk signals yet

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

Risk facts

CVSS score	5.1 (Medium)
EPSS exploit chance	1.4% (top 28%)
CISA exploited list	No
Published	2005-10-30
Last modified	2026-06-16

Publisher (CNA): MITRE · Vendor: arcavir

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

Am I affected?

Timeline

2005-10-30 14:34 UTCPublished CVE record published
2026-06-16 22:16 UTCUpdated Record last modified

arcavir arcavir 2005 DOWNGRADE

Affected: 2005-06-21

Fixed in: no fixed release known

Safe to downgrade to: a release before 2005-06-21

1. Check installed version

apt-cache policy arcavir-2005 || rpm -q arcavir-2005 || arcavir-2005 --version

2. No fixed release: DOWNGRADE to a release before 2005-06-21 (Debian / Ubuntu)

apt-cache madison arcavir-2005 sudo apt install arcavir-2005=<VERSION_BEFORE_2005-06-21> sudo apt-mark hold arcavir-2005

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

dnf --showduplicates list arcavir-2005 sudo dnf downgrade arcavir-2005-<VERSION_BEFORE_2005-06-21> sudo dnf versionlock add arcavir-2005

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-2005-3370?

arcavir 2005: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2005-3370 being exploited?

CVE-2005-3370 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-2005-3370 affect?

CVE-2005-3370 affects arcavir 2005. Severity is medium (CVSS 5.1). Multiple interpretation error in ArcaVir 2005 package 2005-06-21 allows remote attackers to bypass virus scanning via a file such as BAT, HTML, and EML with an "MZ" magic byte sequence which is normally associated with EXE, which causes the

How urgent is CVE-2005-3370?

Priority 36/100. No elevated risk signals yet.

References

← Back to latest CVEs