CVE-2011-3270

What it is

Unspecified vulnerability in Cisco IOS 12.2SB before 12.2(33)SB10 and 15.0S before 15.0(1)S3a on Cisco 10000 series routers allows remote attackers to cause a denial of service (device reload) via a sequence of crafted ICMP packets, aka Bug ID CSCtk62453.

At a glance

Exploitability

Can be exploited over the network without logging in. High risk of service disruption.

Exploit odds

1.8% chance of exploitation in the next 30 days (EPSS).

Fix

A patch, advisory or fixed version is referenced. Upgrade or apply it.

Timeline

1. 2011-10-03 23:55 UTC PublishedDisclosed publicly on CVE.org and NVD
2. 2026-06-16 23:33 UTC Last updatedMost recent change to the record

Why it ranks here

• Exploited in the wild: no, CISA does not list it.
• Exploit odds: 1.8% in the next 30 days (EPSS).
• Severity: 7.8 HIGH (CVSS).
• Fix: a patch or advisory is linked.

Details

Published

2011-10-03 23:55 UTC

Last modified

2026-06-16 23:33 UTC

Exploit probability

1.8% · EPSS, next 30 days

Record status

Modified

Affected

• Cisco iOS 12.2\(28\)sb
• Cisco iOS 12.2\(28\)sb1
• Cisco iOS 12.2\(28\)sb2
• Cisco iOS 12.2\(28\)sb3
• Cisco iOS 12.2\(28\)sb4
• Cisco iOS 12.2\(28\)sb5
• Cisco iOS 12.2\(28\)sb6
• Cisco iOS 12.2\(28\)sb7

Attack profile CVSS 2.0 · 7.8

Attack vector

Network

Complexity

Low

Authentication

None

Confidentiality

None

Integrity

None

Availability

Complete

Is it in your code?

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