How severe is CVE-2009-3163?

CVE-2009-3163 has a CVSS 2.0 base score of 7.5, rated high severity.

Is CVE-2009-3163 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 5% (90th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2009-3163?

CVE-2009-3163 primarily affects Silcnet Silc Client. In total, 16 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2009-3163?

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

When was CVE-2009-3163 published?

CVE-2009-3163 was published on 2009-09-10 and last updated on 2026-06-16.

CVE-2009-3163

CVE-2009-3163 is a high-severity vulnerability in Silcnet Silc Client with a CVSS 2.0 base score of 7.5. 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-134.

Key facts

Severity: High (CVSS 2.0 base score 7.5)
EPSS exploit prediction: 5% (90th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-134
Affected product: Silcnet Silc Client
Published: 2009-09-10
Last modified: 2026-06-16

Description

Multiple format string vulnerabilities in lib/silcclient/command.c in Secure Internet Live Conferencing (SILC) Toolkit before 1.1.10, and SILC Client 1.1.8 and earlier, allow remote attackers to execute arbitrary code via format string specifiers in a channel name, related to (1) silc_client_command_topic, (2) silc_client_command_kick, (3) silc_client_command_leave, and (4) silc_client_command_users.

Frequently asked questions

What is CVE-2009-3163?: Multiple format string vulnerabilities in lib/silcclient/command.c in Secure Internet Live Conferencing (SILC) Toolkit before 1.1.10, and SILC Client 1.1.8 and earlier, allow remote attackers to execute arbitrary code via format string specifiers in a channel name, related to (1) silc_client_command_topic, (2) silc_client_command_kick, (3) silc_client_command_leave, and (4) silc_client_command_users.
How severe is CVE-2009-3163?: CVE-2009-3163 has a CVSS 2.0 base score of 7.5, rated high severity.
Is CVE-2009-3163 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 5% (90th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2009-3163?: CVE-2009-3163 primarily affects Silcnet Silc Client. In total, 16 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2009-3163?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2009-3163 published?: CVE-2009-3163 was published on 2009-09-10 and last updated on 2026-06-16.

References

Affected products (16)

cpe:2.3:a:silcnet:silc_client:*:*:*:*:*:*:*:*
cpe:2.3:a:silcnet:silc_client:1.1.1:*:*:*:*:*:*:*
cpe:2.3:a:silcnet:silc_client:1.1.2:*:*:*:*:*:*:*
cpe:2.3:a:silcnet:silc_client:1.1.3:*:*:*:*:*:*:*
cpe:2.3:a:silcnet:silc_client:1.1.4:*:*:*:*:*:*:*
cpe:2.3:a:silcnet:silc_client:1.1.6:*:*:*:*:*:*:*
cpe:2.3:a:silcnet:silc_client:1.1.7:*:*:*:*:*:*:*
cpe:2.3:a:silcnet:silc_toolkit:*:*:*:*:*:*:*:*
cpe:2.3:a:silcnet:silc_toolkit:1.1:*:*:*:*:*:*:*
cpe:2.3:a:silcnet:silc_toolkit:1.1.1:*:*:*:*:*:*:*
cpe:2.3:a:silcnet:silc_toolkit:1.1.2:*:*:*:*:*:*:*
cpe:2.3:a:silcnet:silc_toolkit:1.1.3:*:*:*:*:*:*:*
cpe:2.3:a:silcnet:silc_toolkit:1.1.4:*:*:*:*:*:*:*
cpe:2.3:a:silcnet:silc_toolkit:1.1.5:*:*:*:*:*:*:*
cpe:2.3:a:silcnet:silc_toolkit:1.1.6:*:*:*:*:*:*:*
cpe:2.3:a:silcnet:silc_toolkit:1.1.8:*:*:*:*:*:*:*

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