CVE-2012-1451: The CAB file parser in Emsisoft Anti-Malware 5.1.0.1 and Ikarus Virus Utilities T3 Command Line Scanner 1.1.97

This week

MEDIUM 4.3DOWNGRADEDOWNGRADE

CVE-2012-1451 is a medium-severity flaw (CVSS 4.3) affecting anti-malware, ikarus virus utilities t3 command line scanner. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

The CAB file parser in Emsisoft Anti-Malware 5.1.0.1 and Ikarus Virus Utilities T3 Command Line Scanner 1.1.97.0 allows remote attackers to bypass malware detection via a CAB file with a modified reserved2 field. NOTE: this may later be SPLIT into multiple CVEs if additional information is published showing that the error occurred independently in different CAB parser implementations.

Why this priority

EPSS top 1%: very likely to be exploited

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

Risk facts

CVSS score	4.3 (Medium)
EPSS exploit chance	67.3% (top 1%)
CISA exploited list	No
Weakness	CWE-264
Published	2012-03-21
Last modified	2026-06-16

Publisher (CNA): MITRE · Vendor: emsisoft · ikarus

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

Am I affected?

Timeline

2012-03-21 10:11 UTCPublished CVE record published
2026-06-16 23:39 UTCUpdated Record last modified

emsisoft anti-malware DOWNGRADE

Affected: 5.1.0.1

Fixed in: no fixed release known

Safe to downgrade to: a release before 5.1.0.1

1. Check installed version

apt-cache policy anti-malware || rpm -q anti-malware || anti-malware --version

2. No fixed release: DOWNGRADE to a release before 5.1.0.1 (Debian / Ubuntu)

apt-cache madison anti-malware sudo apt install anti-malware=<VERSION_BEFORE_5.1.0.1> sudo apt-mark hold anti-malware

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

dnf --showduplicates list anti-malware sudo dnf downgrade anti-malware-<VERSION_BEFORE_5.1.0.1> sudo dnf versionlock add anti-malware

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.

ikarus ikarus virus utilities t3 command line scanner DOWNGRADE

Affected: 1.1.97.0

Fixed in: no fixed release known

Safe to downgrade to: a release before 1.1.97.0

1. Check installed version

apt-cache policy ikarus-virus-utilities-t3-command-line-scanner || rpm -q ikarus-virus-utilities-t3-command-line-scanner || ikarus-virus-utilities-t3-command-line-scanner --version

2. No fixed release: DOWNGRADE to a release before 1.1.97.0 (Debian / Ubuntu)

apt-cache madison ikarus-virus-utilities-t3-command-line-scanner sudo apt install ikarus-virus-utilities-t3-command-line-scanner=<VERSION_BEFORE_1.1.97.0> sudo apt-mark hold ikarus-virus-utilities-t3-command-line-scanner

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

dnf --showduplicates list ikarus-virus-utilities-t3-command-line-scanner sudo dnf downgrade ikarus-virus-utilities-t3-command-line-scanner-<VERSION_BEFORE_1.1.97.0> sudo dnf versionlock add ikarus-virus-utilities-t3-command-line-scanner

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-2012-1451?

anti-malware: downgrade or apply the listed mitigation; ikarus virus utilities t3 command line scanner: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2012-1451 being exploited?

CVE-2012-1451 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-2012-1451 affect?

CVE-2012-1451 affects anti-malware, ikarus virus utilities t3 command line scanner. Severity is medium (CVSS 4.3). The CAB file parser in Emsisoft Anti-Malware 5.1.0.1 and Ikarus Virus Utilities T3 Command Line Scanner 1.1.97.0 allows remote attackers to bypass malware detection via a CAB file with a modified reserved2 field. NOTE: this may later be SP

How urgent is CVE-2012-1451?

Priority 40/100. EPSS top 1%: very likely to be exploited

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References

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