CVE-2009-3641

Exp

Snort before 2.8.5.1, when the -v option is enabled, allows remote attackers to cause a denial of service (application crash) via a crafted IPv6 packet that uses the (1) TCP or (2) ICMP protocol.

Published: 2009-10-28 Last update: 2026-04-23 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2009-3641 is rated High Exploit Risk (71.6/100): CVSS Medium severity, with high exploitation likelihood (EPSS 38.78%, 98th percentile). 5 public exploit reference(s) are indexed (Exploit-DB). EPSS rose +5.54% over the last day, indicating growing attacker interest. Public exploits are available—assess exposure, apply mitigations, and prioritize patching.

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

Public exploit references (Exploit-DB) for CVE-2009-3641

EDB-ID Source Kind Published Link
9969 exploit_db edb 2009-10-23 Exploit-DB ↗
33306 exploit_db edb 2009-10-22 Exploit-DB ↗
— nvd_ref exploit_tag Exploit-DB ↗
— nvd_ref exploit_tag Exploit-DB ↗
— nvd_ref exploit_tag Exploit-DB ↗

Exploit prediction scoring system (EPSS) score for CVE-2009-3641

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 2026-06-15 33.24% 38.78% +5.54%
2 2025-03-30 41.54% 33.24% -8.30%
3 2025-03-29 — 41.54% —

Full EPSS history (8 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2009-3641

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
4.3 2.0 MEDIUM
AV:N/AC:M/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:M)
Exploitation needs some favorable conditions, but not exceptional ones.
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.
 8.6 2.9 [email protected]

Weakness enumeration for CVE-2009-3641

OS Trackers for CVE-2009-3641

vendor priority summary link
redhat medium — https://access.redhat.com/security/cve/CVE-2009-3641
ubuntu low CVE-2009-3641 low priority: Ubuntu including 1 source packages (snort), 22 status rows across 22 suites (artful, dapper, hardy, intrepid, jaunty, karmic, lucid, maverick, natty, oneiric, precise, quantal, raring, saucy, trusty, upstream, utopic, vivid, wily, xenial, yakkety, zesty): ignored 18, not-affected 3, needs-triage 1. https://ubuntu.com/security/CVE-2009-3641

Affected software / configurations for CVE-2009-3641

Vendor Product Version Raw CPE
snort snort <= 2.8.3.5 cpe:2.3:a:snort:snort:*:*:*:*:*:*:*:*
snort snort 1.6 cpe:2.3:a:snort:snort:1.6:*:*:*:*:*:*:*
snort snort 1.8.0 cpe:2.3:a:snort:snort:1.8.0:*:*:*:*:*:*:*
snort snort 1.8.1 cpe:2.3:a:snort:snort:1.8.1:*:*:*:*:*:*:*
snort snort 1.8.2 cpe:2.3:a:snort:snort:1.8.2:*:*:*:*:*:*:*
snort snort 1.8.3 cpe:2.3:a:snort:snort:1.8.3:*:*:*:*:*:*:*
snort snort 1.8.4 cpe:2.3:a:snort:snort:1.8.4:*:*:*:*:*:*:*
snort snort 1.8.5 cpe:2.3:a:snort:snort:1.8.5:*:*:*:*:*:*:*
snort snort 1.8.6 cpe:2.3:a:snort:snort:1.8.6:*:*:*:*:*:*:*
snort snort 1.8.7 cpe:2.3:a:snort:snort:1.8.7:*:*:*:*:*:*:*
snort snort 1.9.0 cpe:2.3:a:snort:snort:1.9.0:*:*:*:*:*:*:*
snort snort 1.9.1 cpe:2.3:a:snort:snort:1.9.1:*:*:*:*:*:*:*
snort snort 2.0 cpe:2.3:a:snort:snort:2.0:beta:*:*:*:*:*:*
snort snort 2.0 cpe:2.3:a:snort:snort:2.0:rc1:*:*:*:*:*:*
snort snort 2.6.1 cpe:2.3:a:snort:snort:2.6.1:*:*:*:*:*:*:*
snort snort 2.6.1.1 cpe:2.3:a:snort:snort:2.6.1.1:*:*:*:*:*:*:*
snort snort 2.6.1.2 cpe:2.3:a:snort:snort:2.6.1.2:*:*:*:*:*:*:*
snort snort 2.6.2 cpe:2.3:a:snort:snort:2.6.2:*:*:*:*:*:*:*
snort snort 2.7_beta1 cpe:2.3:a:snort:snort:2.7_beta1:*:*:*:*:*:*:*
snort snort 2.8.0 cpe:2.3:a:snort:snort:2.8.0:*:*:*:*:*:*:*
snort snort 2.8.2.2 cpe:2.3:a:snort:snort:2.8.2.2:*:*:*:*:*:*:*
snort snort 2.8.3 cpe:2.3:a:snort:snort:2.8.3:*:*:*:*:*:*:*
snort snort 2.8.3.1 cpe:2.3:a:snort:snort:2.8.3.1:*:*:*:*:*:*:*
snort snort 2.8.3.2 cpe:2.3:a:snort:snort:2.8.3.2:*:*:*:*:*:*:*
snort snort 2.8.3.4 cpe:2.3:a:snort:snort:2.8.3.4:*:*:*:*:*:*:*
snort snort 2.8.3.4.1 cpe:2.3:a:snort:snort:2.8.3.4.1:*:*:*:*:*:*:*

References for CVE-2009-3641

cvelogic Threat Intelligence