CVE-2007-3728

Buffer overflow in lib/silcclient/client_notify.c of SILC Client and SILC Toolkit before 1.1.2 allows remote attackers to cause a denial of service via "NICK_CHANGE" notifications.

Published: 2007-07-12 Last update: 2026-04-23 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2007-3728 is rated Moderate Risk (48/100): CVSS Medium severity, with medium exploitation likelihood (EPSS 1.51%). Review affected assets and schedule remediation.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2007-3728

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2025-03-30 1.34% 1.51% +0.17%
2 2025-03-29 1.51% 1.34% -0.17%
3 2025-03-17 — 1.51% —

Full EPSS history (11 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2007-3728

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
5.0 2.0 MEDIUM
AV:N/AC:L/Au:N/C:N/I:N/A:P Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:L)
Exploitation conditions are straightforward and predictable.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:N)
No confidentiality impact.
Integrity impact (I:N)
No integrity impact.
Availability impact (A:P)
Partial availability impact.
 10.0 2.9 [email protected]

Weakness enumeration for CVE-2007-3728

OS Trackers for CVE-2007-3728

vendor priority summary link
redhat — — https://access.redhat.com/security/cve/CVE-2007-3728
ubuntu medium CVE-2007-3728 medium priority: Ubuntu including 1 source packages (silc-toolkit), 5 status rows across 5 suites (dapper, edgy, feisty, gutsy, upstream): not-affected 4, released 1. https://ubuntu.com/security/CVE-2007-3728

Vendor comments (NVD) for CVE-2007-3728

  • Red Hat (2007-07-17T00:00:00)

    Not vulnerable. libsilc was not shipped with Enterprise Linux 2.1 or 3. This issue did not affect the versions of libsilc as shipped with Red Hat Enterprise Linux 4 or 5.

Affected software / configurations for CVE-2007-3728

Vendor Product Version Raw CPE
silc silc_client 1.1.1 cpe:2.3:a:silc:silc_client:1.1.1:*:*:*:*:*:*:*
silc silc_toolkit 1.1.1 cpe:2.3:a:silc:silc_toolkit:1.1.1:*:*:*:*:*:*:*

References for CVE-2007-3728

cvelogic Threat Intelligence