How severe is CVE-2006-4839?

CVE-2006-4839 has a CVSS 2.0 base score of 5.0, rated medium severity.

Is CVE-2006-4839 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (86th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2006-4839?

CVE-2006-4839 affects Sophos Sophos Anti-virus. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2006-4839?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2006-4839 published?

CVE-2006-4839 was published on 2006-11-01 and last updated on 2026-06-16.

CVE-2006-4839

CVE-2006-4839 is a medium-severity vulnerability in Sophos Sophos Anti-virus with a CVSS 2.0 base score of 5.0. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Severity: Medium (CVSS 2.0 base score 5.0)
EPSS exploit prediction: 3% (86th percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Sophos Sophos Anti-virus
Published: 2006-11-01
Last modified: 2026-06-16

Description

Sophos Anti-Virus 5.1 allows remote attackers to cause a denial of service (memory consumption) via a file that is compressed with Petite and contains a large number of sections.

Frequently asked questions

What is CVE-2006-4839?: Sophos Anti-Virus 5.1 allows remote attackers to cause a denial of service (memory consumption) via a file that is compressed with Petite and contains a large number of sections.
How severe is CVE-2006-4839?: CVE-2006-4839 has a CVSS 2.0 base score of 5.0, rated medium severity.
Is CVE-2006-4839 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (86th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2006-4839?: CVE-2006-4839 affects Sophos Sophos Anti-virus. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2006-4839?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2006-4839 published?: CVE-2006-4839 was published on 2006-11-01 and last updated on 2026-06-16.

References

Affected products (1)

cpe:2.3:a:sophos:sophos_anti-virus:5.1:*:*:*:*:*:*:*

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