CVE-2011-3273

Severity: high (CVSS 7.8 v2.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 1.8% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2011-10-03 · updated 2026-06-16
Weakness: CWE-399

Description

Memory leak in Cisco IOS 15.0 through 15.1, when IPS or Zone-Based Firewall (aka ZBFW) is configured, allows remote attackers to cause a denial of service (memory consumption or device crash) via vectors that trigger many session creation flows, aka Bug ID CSCti79848.

Affected products

Cisco IOS: 15.0, 15.0m, 15.0sg, 15.0xa, 15.0xo, 15.1 (+5)

References

http://tools.cisco.com/security/center/viewAlert.x?alertId=24123
http://www.cisco.com/en/US/products/products_security_advisory09186a0080b95d57.shtml
http://tools.cisco.com/security/center/viewAlert.x?alertId=24123
http://www.cisco.com/en/US/products/products_security_advisory09186a0080b95d57.shtml

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