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CVE-2011-3297

HIGH · CVSS 7.8EPSS 1.4%EU EUVD

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 certain authentication configurations are used, allows remote attackers to cause a denial of service (module crash) by making many authentication requests for network access, aka Bug ID CSCtn15697.

Key facts

CVSS score
7.8 (v2.0)
Severity
HIGH
CVSS vector
AV:N/AC:L/Au:N/C:N/I:N/A:C
Weakness (CWE)
CWE-287
EPSS score
1.4% (72th percentile)
In CISA KEV
No
In EU EUVD
Yes (EUVD-2011-3261)
Published
October 6, 2011
NVD last modified
June 16, 2026
Status
Modified

EU Vulnerability Database (EUVD)

This vulnerability is also tracked by ENISA as EUVD-2011-3261 in the EU Vulnerability Database. Last updated in EUVD on August 6, 2024.

View on the EU Vulnerability Database

Affected products

  • cisco / catalyst 6500
  • cisco / catalyst 7600
  • cisco / firewall services module software
  • cisco / firewall services module software
  • cisco / firewall services module software
  • cisco / firewall services module software
  • cisco / firewall services module software
  • cisco / firewall services module software
  • cisco / firewall services module software
  • cisco / firewall services module software
  • cisco / firewall services module software
  • cisco / firewall services module software
  • cisco / firewall services module software
  • cisco / firewall services module software
  • cisco / firewall services module software
  • cisco / firewall services module software
  • cisco / firewall services module software
  • cisco / firewall services module software
  • cisco / firewall services module software
  • cisco / firewall services module software
  • cisco / firewall services module software
  • cisco / firewall services module software
  • cisco / firewall services module software
  • cisco / firewall services module software
  • cisco / firewall services module software
  • cisco / firewall services module software
  • cisco / firewall services module software
  • cisco / firewall services module software
  • cisco / firewall services module software
  • cisco / firewall services module software
  • cisco / firewall services module software
  • cisco / firewall services module software
  • cisco / firewall services module software
  • cisco / firewall services module software
  • cisco / firewall services module software
  • cisco / firewall services module software
  • cisco / firewall services module software
  • cisco / firewall services module software
  • cisco / firewall services module software
  • cisco / firewall services module software
  • cisco / firewall services module software
  • cisco / firewall services module software
  • cisco / firewall services module software
  • cisco / firewall services module software
  • cisco / firewall services module software
  • cisco / firewall services module software
  • cisco / firewall services module software
  • cisco / firewall services module software
  • cisco / firewall services module software
  • cisco / firewall services module software

and 16 more…

References

Last updated September 17, 2026 · Source: NVD, CISA KEV, FIRST.org EPSS

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