CVE-2011-2586: Cisco IOS

Medium severity, CVSS 5.4. EPSS: 1.2% chance of exploitation in the next 30 days.

The HTTP client in Cisco IOS 12.4 and 15.0 allows user-assisted remote attackers to cause a denial of service (device crash) via a malformed HTTP response to a request for service installation, aka Bug ID CSCts12249.

Affected products

• Cisco IOS: version 12.4 only; version 15.0 only

Published 2012-05-02. Last modified 2026-06-16.