How severe is CVE-2009-1783?

CVE-2009-1783 has a CVSS 2.0 base score of 10.0, rated critical severity.

Is CVE-2009-1783 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (88th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2009-1783?

CVE-2009-1783 primarily affects F-prot F-prot Antivirus. In total, 10 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2009-1783?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

When was CVE-2009-1783 published?

CVE-2009-1783 was published on 2009-05-22 and last updated on 2026-06-16.

CVE-2009-1783

CVE-2009-1783 is a critical-severity vulnerability in F-prot F-prot Antivirus with a CVSS 2.0 base score of 10.0. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-20.

Key facts

Severity: Critical (CVSS 2.0 base score 10.0)
EPSS exploit prediction: 3% (88th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-20
Affected product: F-prot F-prot Antivirus
Published: 2009-05-22
Last modified: 2026-06-16

Description

Multiple FRISK Software F-Prot anti-virus products, including Antivirus for Exchange, Linux on IBM zSeries, Linux x86 File Servers, Linux x86 Mail Servers, Linux x86 Workstations, Solaris Mail Servers, Antivirus for Windows, and others, allow remote attackers to bypass malware detection via a crafted CAB archive.

Frequently asked questions

What is CVE-2009-1783?: Multiple FRISK Software F-Prot anti-virus products, including Antivirus for Exchange, Linux on IBM zSeries, Linux x86 File Servers, Linux x86 Mail Servers, Linux x86 Workstations, Solaris Mail Servers, Antivirus for Windows, and others, allow remote attackers to bypass malware detection via a crafted CAB archive.
How severe is CVE-2009-1783?: CVE-2009-1783 has a CVSS 2.0 base score of 10.0, rated critical severity.
Is CVE-2009-1783 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (88th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2009-1783?: CVE-2009-1783 primarily affects F-prot F-prot Antivirus. In total, 10 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2009-1783?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2009-1783 published?: CVE-2009-1783 was published on 2009-05-22 and last updated on 2026-06-16.

References

Affected products (10)

cpe:2.3:a:f-prot:f-prot_antivirus:*:exchange:*:*:*:*:*:*
cpe:2.3:a:f-prot:f-prot_antivirus:*:linux_on_ibm_zseries:*:*:*:*:*:*
cpe:2.3:a:f-prot:f-prot_antivirus:*:linux_x86_file_servers:*:*:*:*:*:*
cpe:2.3:a:f-prot:f-prot_antivirus:*:linux_x86_mail_servers:*:*:*:*:*:*
cpe:2.3:a:f-prot:f-prot_antivirus:*:linux_x86_workstations:*:*:*:*:*:*
cpe:2.3:a:f-prot:f-prot_antivirus:*:solaris_mail_servers:*:*:*:*:*:*
cpe:2.3:a:f-prot:f-prot_antivirus:*:windows:*:*:*:*:*:*
cpe:2.3:a:f-prot:f-prot_antivirus:*:windows_mail_servers:*:*:*:*:*:*
cpe:2.3:a:f-prot:f-prot_aves:*:*:*:*:*:*:*:*
cpe:2.3:a:f-prot:f-prot_milter:*:*:*:*:*:*:*:*

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