CVE-2008-0860: Unspecified vulnerability in the AVG plugin in Kerio MailServer before 6.5.0 has unspecified impact via unknow

Q: How do I fix CVE-2008-0860?

avg plugin: mitigate or apply the listed mitigation; kerio mailserver: upgrade to newer than 6.4.2. Exact commands for each OS are on this page.

Q: Is CVE-2008-0860 being exploited?

CVE-2008-0860 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2008-0860 affect?

CVE-2008-0860 affects avg plugin, kerio mailserver. Severity is high (CVSS 10.0). Unspecified vulnerability in the AVG plugin in Kerio MailServer before 6.5.0 has unspecified impact via unknown remote attack vectors related to null DACLs.

Q: How urgent is CVE-2008-0860?

Priority 54/100. Critical severity

This month

HIGH 10.0MITIGATEUPGRADE

CVE-2008-0860 is a high-severity flaw (CVSS 10.0) affecting avg plugin, kerio mailserver. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Unspecified vulnerability in the AVG plugin in Kerio MailServer before 6.5.0 has unspecified impact via unknown remote attack vectors related to null DACLs.

Why this priority

Critical severity

A fixed release or distro patch exists.

Risk facts

CVSS score	10.0 (High)
EPSS exploit chance	1.5% (top 25%)
CISA exploited list	No
Published	2008-02-21
Last modified	2026-06-16

Publisher (CNA): MITRE · Vendor: kerio

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

Am I affected?

Timeline

2008-02-21 00:44 UTCPublished CVE record published
2026-06-16 22:50 UTCUpdated Record last modified

kerio avg plugin 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 avg-plugin || rpm -q avg-plugin || avg-plugin --version

No fixed or unaffected release known

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

kerio kerio mailserver UPGRADE

Affected: <= 6.4.2

Fixed in: newer than 6.4.2

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy kerio-mailserver || rpm -q kerio-mailserver || kerio-mailserver --version

2. UPGRADE to newer than 6.4.2 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade kerio-mailserver

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade kerio-mailserver

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

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-2008-0860?

avg plugin: mitigate or apply the listed mitigation; kerio mailserver: upgrade to newer than 6.4.2. Exact commands for each OS are on this page.

Is CVE-2008-0860 being exploited?

CVE-2008-0860 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-2008-0860 affect?

CVE-2008-0860 affects avg plugin, kerio mailserver. Severity is high (CVSS 10.0). Unspecified vulnerability in the AVG plugin in Kerio MailServer before 6.5.0 has unspecified impact via unknown remote attack vectors related to null DACLs.

How urgent is CVE-2008-0860?

Priority 54/100. Critical severity

References

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