CVE & CISA-KEV CatalogNVD
CVE-2011-3271
HIGHEPSS 95th pctl10.0
CVSS v2
Description
Unspecified vulnerability in the Smart Install functionality in Cisco IOS 12.2 and 15.1 allows remote attackers to execute arbitrary code or cause a denial of service (device crash) via crafted TCP packets to port 4786, aka Bug ID CSCto10165.
CVSS v2 Vector
No CVSS vector data available.
Exploit Intelligence
10.76%probability of exploitation in 30 days
95thpercentile
Very high risk: more likely to be exploited than 95% of all known CVEs.
References
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Start freeThis product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-04-29.