CVE-2011-3296

Cisco Firewall Services Module (aka FWSM) 3.1 before 3.1(21), 3.2 before 3.2(22), 4.0 before 4.0(16), and 4.1 before 4.1(7), when IPv6 is used, allows remote attackers to cause a denial of service (memory corruption and module crash or hang) via vectors that trigger syslog message 302015, aka Bug ID CSCti83875.

Published: 2011-10-06 Last update: 2026-06-16 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2011-3296 is rated Moderate Risk (58.6/100): CVSS High severity, with medium exploitation likelihood (EPSS 1.77%). EPSS rose +1.06% over the last day, indicating growing attacker interest. 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-2011-3296

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 0.71% 1.77% +1.06%
2 2026-02-18 0.43% 0.71% +0.28%
3 2025-03-30 — 0.43% —

Full EPSS history (7 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2011-3296

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
7.8 2.0 HIGH
AV:N/AC:L/Au:N/C:N/I:N/A:C 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:C)
Complete availability impact.
 10.0 6.9 [email protected]

Weakness enumeration for CVE-2011-3296

Affected software / configurations for CVE-2011-3296

Vendor Product Version Raw CPE
cisco firewall_services_module_software 3.1 cpe:2.3:a:cisco:firewall_services_module_software:3.1:*:*:*:*:*:*:*
cisco firewall_services_module_software 3.1\(2\) cpe:2.3:a:cisco:firewall_services_module_software:3.1\(2\):*:*:*:*:*:*:*
cisco firewall_services_module_software 3.1\(3\) cpe:2.3:a:cisco:firewall_services_module_software:3.1\(3\):*:*:*:*:*:*:*
cisco firewall_services_module_software 3.1\(4\) cpe:2.3:a:cisco:firewall_services_module_software:3.1\(4\):*:*:*:*:*:*:*
cisco firewall_services_module_software 3.1\(5\) cpe:2.3:a:cisco:firewall_services_module_software:3.1\(5\):*:*:*:*:*:*:*
cisco firewall_services_module_software 3.1\(6\) cpe:2.3:a:cisco:firewall_services_module_software:3.1\(6\):*:*:*:*:*:*:*
cisco firewall_services_module_software 3.1\(7\) cpe:2.3:a:cisco:firewall_services_module_software:3.1\(7\):*:*:*:*:*:*:*
cisco firewall_services_module_software 3.1\(8\) cpe:2.3:a:cisco:firewall_services_module_software:3.1\(8\):*:*:*:*:*:*:*
cisco firewall_services_module_software 3.1\(9\) cpe:2.3:a:cisco:firewall_services_module_software:3.1\(9\):*:*:*:*:*:*:*
cisco firewall_services_module_software 3.1\(10\) cpe:2.3:a:cisco:firewall_services_module_software:3.1\(10\):*:*:*:*:*:*:*
cisco firewall_services_module_software 3.1\(11\) cpe:2.3:a:cisco:firewall_services_module_software:3.1\(11\):*:*:*:*:*:*:*
cisco firewall_services_module_software 3.1\(12\) cpe:2.3:a:cisco:firewall_services_module_software:3.1\(12\):*:*:*:*:*:*:*
cisco firewall_services_module_software 3.1\(13\) cpe:2.3:a:cisco:firewall_services_module_software:3.1\(13\):*:*:*:*:*:*:*
cisco firewall_services_module_software 3.1\(14\) cpe:2.3:a:cisco:firewall_services_module_software:3.1\(14\):*:*:*:*:*:*:*
cisco firewall_services_module_software 3.1\(15\) cpe:2.3:a:cisco:firewall_services_module_software:3.1\(15\):*:*:*:*:*:*:*
cisco firewall_services_module_software 3.1\(16\) cpe:2.3:a:cisco:firewall_services_module_software:3.1\(16\):*:*:*:*:*:*:*
cisco firewall_services_module_software 3.1\(17\) cpe:2.3:a:cisco:firewall_services_module_software:3.1\(17\):*:*:*:*:*:*:*
cisco firewall_services_module_software 3.1\(18\) cpe:2.3:a:cisco:firewall_services_module_software:3.1\(18\):*:*:*:*:*:*:*
cisco firewall_services_module_software 3.1\(19\) cpe:2.3:a:cisco:firewall_services_module_software:3.1\(19\):*:*:*:*:*:*:*
cisco firewall_services_module_software 3.1\(20\) cpe:2.3:a:cisco:firewall_services_module_software:3.1\(20\):*:*:*:*:*:*:*
cisco firewall_services_module_software 3.2 cpe:2.3:a:cisco:firewall_services_module_software:3.2:*:*:*:*:*:*:*
cisco firewall_services_module_software 3.2\(1\) cpe:2.3:a:cisco:firewall_services_module_software:3.2\(1\):*:*:*:*:*:*:*
cisco firewall_services_module_software 3.2\(2\) cpe:2.3:a:cisco:firewall_services_module_software:3.2\(2\):*:*:*:*:*:*:*
cisco firewall_services_module_software 3.2\(3\) cpe:2.3:a:cisco:firewall_services_module_software:3.2\(3\):*:*:*:*:*:*:*
cisco firewall_services_module_software 3.2\(4\) cpe:2.3:a:cisco:firewall_services_module_software:3.2\(4\):*:*:*:*:*:*:*
cisco firewall_services_module_software 3.2\(5\) cpe:2.3:a:cisco:firewall_services_module_software:3.2\(5\):*:*:*:*:*:*:*
cisco firewall_services_module_software 3.2\(6\) cpe:2.3:a:cisco:firewall_services_module_software:3.2\(6\):*:*:*:*:*:*:*
cisco firewall_services_module_software 3.2\(7\) cpe:2.3:a:cisco:firewall_services_module_software:3.2\(7\):*:*:*:*:*:*:*
cisco firewall_services_module_software 3.2\(8\) cpe:2.3:a:cisco:firewall_services_module_software:3.2\(8\):*:*:*:*:*:*:*
cisco firewall_services_module_software 3.2\(9\) cpe:2.3:a:cisco:firewall_services_module_software:3.2\(9\):*:*:*:*:*:*:*
cisco firewall_services_module_software 3.2\(10\) cpe:2.3:a:cisco:firewall_services_module_software:3.2\(10\):*:*:*:*:*:*:*
cisco firewall_services_module_software 3.2\(11\) cpe:2.3:a:cisco:firewall_services_module_software:3.2\(11\):*:*:*:*:*:*:*
cisco firewall_services_module_software 3.2\(12\) cpe:2.3:a:cisco:firewall_services_module_software:3.2\(12\):*:*:*:*:*:*:*
cisco firewall_services_module_software 3.2\(13\) cpe:2.3:a:cisco:firewall_services_module_software:3.2\(13\):*:*:*:*:*:*:*
cisco firewall_services_module_software 3.2\(14\) cpe:2.3:a:cisco:firewall_services_module_software:3.2\(14\):*:*:*:*:*:*:*
cisco firewall_services_module_software 3.2\(15\) cpe:2.3:a:cisco:firewall_services_module_software:3.2\(15\):*:*:*:*:*:*:*
cisco firewall_services_module_software 3.2\(16\) cpe:2.3:a:cisco:firewall_services_module_software:3.2\(16\):*:*:*:*:*:*:*
cisco firewall_services_module_software 3.2\(17\) cpe:2.3:a:cisco:firewall_services_module_software:3.2\(17\):*:*:*:*:*:*:*
cisco firewall_services_module_software 3.2\(18\) cpe:2.3:a:cisco:firewall_services_module_software:3.2\(18\):*:*:*:*:*:*:*
cisco firewall_services_module_software 3.2\(19\) cpe:2.3:a:cisco:firewall_services_module_software:3.2\(19\):*:*:*:*:*:*:*
cisco firewall_services_module_software 3.2\(20\) cpe:2.3:a:cisco:firewall_services_module_software:3.2\(20\):*:*:*:*:*:*:*
cisco firewall_services_module_software 3.2\(21\) cpe:2.3:a:cisco:firewall_services_module_software:3.2\(21\):*:*:*:*:*:*:*
cisco firewall_services_module_software 4.0 cpe:2.3:a:cisco:firewall_services_module_software:4.0:*:*:*:*:*:*:*
cisco firewall_services_module_software 4.0\(1\) cpe:2.3:a:cisco:firewall_services_module_software:4.0\(1\):*:*:*:*:*:*:*
cisco firewall_services_module_software 4.0\(2\) cpe:2.3:a:cisco:firewall_services_module_software:4.0\(2\):*:*:*:*:*:*:*
cisco firewall_services_module_software 4.0\(3\) cpe:2.3:a:cisco:firewall_services_module_software:4.0\(3\):*:*:*:*:*:*:*
cisco firewall_services_module_software 4.0\(4\) cpe:2.3:a:cisco:firewall_services_module_software:4.0\(4\):*:*:*:*:*:*:*
cisco firewall_services_module_software 4.0\(5\) cpe:2.3:a:cisco:firewall_services_module_software:4.0\(5\):*:*:*:*:*:*:*
cisco firewall_services_module_software 4.0\(6\) cpe:2.3:a:cisco:firewall_services_module_software:4.0\(6\):*:*:*:*:*:*:*
cisco firewall_services_module_software 4.0\(7\) cpe:2.3:a:cisco:firewall_services_module_software:4.0\(7\):*:*:*:*:*:*:*
cisco firewall_services_module_software 4.0\(8\) cpe:2.3:a:cisco:firewall_services_module_software:4.0\(8\):*:*:*:*:*:*:*
cisco firewall_services_module_software 4.0\(10\) cpe:2.3:a:cisco:firewall_services_module_software:4.0\(10\):*:*:*:*:*:*:*
cisco firewall_services_module_software 4.0\(11\) cpe:2.3:a:cisco:firewall_services_module_software:4.0\(11\):*:*:*:*:*:*:*
cisco firewall_services_module_software 4.0\(12\) cpe:2.3:a:cisco:firewall_services_module_software:4.0\(12\):*:*:*:*:*:*:*
cisco firewall_services_module_software 4.0\(13\) cpe:2.3:a:cisco:firewall_services_module_software:4.0\(13\):*:*:*:*:*:*:*
cisco firewall_services_module_software 4.0\(14\) cpe:2.3:a:cisco:firewall_services_module_software:4.0\(14\):*:*:*:*:*:*:*
cisco firewall_services_module_software 4.0\(15\) cpe:2.3:a:cisco:firewall_services_module_software:4.0\(15\):*:*:*:*:*:*:*
cisco firewall_services_module_software 4.1 cpe:2.3:a:cisco:firewall_services_module_software:4.1:*:*:*:*:*:*:*
cisco firewall_services_module_software 4.1\(1\) cpe:2.3:a:cisco:firewall_services_module_software:4.1\(1\):*:*:*:*:*:*:*
cisco firewall_services_module_software 4.1\(2\) cpe:2.3:a:cisco:firewall_services_module_software:4.1\(2\):*:*:*:*:*:*:*
cisco firewall_services_module_software 4.1\(3\) cpe:2.3:a:cisco:firewall_services_module_software:4.1\(3\):*:*:*:*:*:*:*
cisco firewall_services_module_software 4.1\(4\) cpe:2.3:a:cisco:firewall_services_module_software:4.1\(4\):*:*:*:*:*:*:*
cisco firewall_services_module_software 4.1\(5\) cpe:2.3:a:cisco:firewall_services_module_software:4.1\(5\):*:*:*:*:*:*:*
cisco firewall_services_module_software 4.1\(6\) cpe:2.3:a:cisco:firewall_services_module_software:4.1\(6\):*:*:*:*:*:*:*
cisco catalyst_6500 — cpe:2.3:h:cisco:catalyst_6500:*:*:*:*:*:*:*:*
cisco catalyst_7600 — cpe:2.3:h:cisco:catalyst_7600:*:*:*:*:*:*:*:*

References for CVE-2011-3296

cvelogic Threat Intelligence