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.
CVE-2011-3296
NONECVSS 0.0
0.0
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
- No confirmed exploitation signals yet
CISA-KEV: Not listedEPSS: 2%CVSS: —Exploit: NoneExposed: 0
No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.
- CVSS v3
- —
- EG Score
- 0.0(none)
- EPSS
- 75.4%
- KEV
- Not listed
Published
October 6, 2011
Last Modified
April 29, 2026
References (4)
- psirt@ciscohttp://www.cisco.com/warp/public/707/cisco-sa-20111005-fwsm.shtml
- psirt@ciscohttps://exchange.xforce.ibmcloud.com/vulnerabilities/70326
- af854a3a-2127-422b-91ae-364da2661108http://www.cisco.com/warp/public/707/cisco-sa-20111005-fwsm.shtml
- af854a3a-2127-422b-91ae-364da2661108https://exchange.xforce.ibmcloud.com/vulnerabilities/70326
Frequently asked(4)
What is CVE-2011-3296?
CVE-2011-3296 is a none vulnerability published on October 6, 2011. 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…
When was CVE-2011-3296 disclosed?
CVE-2011-3296 was first published in the National Vulnerability Database on October 6, 2011, with the most recent update on April 29, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2011-3296 actively exploited?
CVE-2011-3296 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 75.4% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
How do I remediate CVE-2011-3296?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2011-3296, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.
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