CVE-2006-6627: Integer overflow in the packed PE file parsing implementation in BitDefender products before 20060829, includi

This month

HIGH 10.0DOWNGRADEDOWNGRADEMITIGATE

CVE-2006-6627 is a high-severity flaw (CVSS 10.0) affecting bitdefender, bitdefender antivirus, bitdefender internet security. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Integer overflow in the packed PE file parsing implementation in BitDefender products before 20060829, including Antivirus, Antivirus Plus, Internet Security, Mail Protection for Enterprises, and Online Scanner; and BitDefender products for Microsoft ISA Server and Exchange 5.5 through 2003; allows remote attackers to execute arbitrary code via a crafted file, which triggers a heap-based buffer overflow, aka the "cevakrnl.xmd vulnerability."

Why this priority

Critical severity
EPSS top 6%: very likely to be exploited

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

Risk facts

CVSS score	10.0 (High)
EPSS exploit chance	7.4% (top 6%)
CISA exploited list	No
Published	2006-12-18
Last modified	2026-06-16

Publisher (CNA): MITRE · Vendor: softwin

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

Am I affected?

Timeline

2006-12-18 11:28 UTCPublished CVE record published
2026-06-16 22:33 UTCUpdated Record last modified

softwin bitdefender DOWNGRADE

Affected: isa_server · ms_exchange_5.5 · ms_exchange_2000 · ms_exchange_2003

Fixed in: no fixed release known

Safe to downgrade to: a release before isa_server

1. Check installed version

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

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

apt-cache madison bitdefender sudo apt install bitdefender=<VERSION_BEFORE_isa_server> sudo apt-mark hold bitdefender

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

dnf --showduplicates list bitdefender sudo dnf downgrade bitdefender-<VERSION_BEFORE_isa_server> sudo dnf versionlock add bitdefender

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.

softwin bitdefender antivirus DOWNGRADE

Affected: all versions · plus

Fixed in: no fixed release known

Safe to downgrade to: a release before plus

1. Check installed version

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

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

apt-cache madison bitdefender-antivirus sudo apt install bitdefender-antivirus=<VERSION_BEFORE_plus> sudo apt-mark hold bitdefender-antivirus

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

dnf --showduplicates list bitdefender-antivirus sudo dnf downgrade bitdefender-antivirus-<VERSION_BEFORE_plus> sudo dnf versionlock add bitdefender-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.

softwin bitdefender internet security 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 bitdefender-internet-security || rpm -q bitdefender-internet-security || bitdefender-internet-security --version

No fixed or unaffected release known

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

softwin bitdefender mail protection DOWNGRADE

Affected: enterprises

Fixed in: no fixed release known

Safe to downgrade to: a release before enterprises

1. Check installed version

apt-cache policy bitdefender-mail-protection || rpm -q bitdefender-mail-protection || bitdefender-mail-protection --version

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

apt-cache madison bitdefender-mail-protection sudo apt install bitdefender-mail-protection=<VERSION_BEFORE_enterprises> sudo apt-mark hold bitdefender-mail-protection

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

dnf --showduplicates list bitdefender-mail-protection sudo dnf downgrade bitdefender-mail-protection-<VERSION_BEFORE_enterprises> sudo dnf versionlock add bitdefender-mail-protection

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.

softwin bitdefender online scanner 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 bitdefender-online-scanner || rpm -q bitdefender-online-scanner || bitdefender-online-scanner --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-2006-6627?

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

Is CVE-2006-6627 being exploited?

CVE-2006-6627 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-2006-6627 affect?

CVE-2006-6627 affects bitdefender, bitdefender antivirus, bitdefender internet security. Severity is high (CVSS 10.0). Integer overflow in the packed PE file parsing implementation in BitDefender products before 20060829, including Antivirus, Antivirus Plus, Internet Security, Mail Protection for Enterprises, and Online Scanner; and BitDefender products for

How urgent is CVE-2006-6627?

Priority 59/100. Critical severity; EPSS top 6%: very likely to be exploited

Related CVEs

CVE-2012-1463 MEDIUM 4.3 DOWNGRADE DOWNGRADE The ELF file parser in AhnLab V3 Internet Security 2011.01.18.00, Bitdefender 7.2, Quick Heal (aka Cat QuickHe
CVE-2012-1461 MEDIUM 4.3 DOWNGRADE DOWNGRADE The Gzip file parser in AVG Anti-Virus 10.0.0.1190, Bitdefender 7.2, Command Antivirus 5.2.11.5, Emsisoft Anti
CVE-2012-1431 MEDIUM 4.3 DOWNGRADE DOWNGRADE The ELF file parser in Bitdefender 7.2, Command Antivirus 5.2.11.5, Comodo Antivirus 7424, eSafe 7.0.17.0, F-P
CVE-2012-1430 MEDIUM 4.3 DOWNGRADE DOWNGRADE The ELF file parser in Bitdefender 7.2, Comodo Antivirus 7424, eSafe 7.0.17.0, F-Secure Anti-Virus 9.0.16160.0
CVE-2008-5409 HIGH 9.3 DOWNGRADE DOWNGRADE Unspecified vulnerability in the pdf.xmd module in (1) BitDefender Free Edition 10 and Antivirus Standard 10,

References

← Back to latest CVEs