CVE-2011-3486

Published: Sep 16, 2011Modified: Apr 29, 2026

5.0

Vector

AV:N/AC:L/Au:N/C:N/I:N/A:P

Exploitability: 10.0 / Impact: 2.9

Source: NVD

Description

Beckhoff TwinCAT 2.11.0.2004 and earlier allows remote attackers to cause a denial of service via a crafted request to UDP port 48899, which triggers an out-of-bounds read.

Affected (5)

Products: Beckhoff: Twincat

Beckhoff

1 product

Twincat

Configuration A

5 vulnerable

Vulnerable Software	Affected Versions
Beckhoff Twincat	Up to 2.11.0.2004
Beckhoff Twincat	Version 2.10
Beckhoff Twincat	Version 2.7
Beckhoff Twincat	Version 2.8
Beckhoff Twincat	Version 2.9

Related CWEs

CWE-119

Improper Restriction of Operations within the Bounds of a Memory Buffer

The product performs operations on a memory buffer, but it reads from or writes to a memory location outside the buffer's intended boundary. This may result in read or write operations on unexpected memory locations that could be linked to other variables, data structures, or internal program data.

References (10)

http://aluigi.altervista.org/adv/twincat_1-adv.txt

Source: cve@mitre.org

Exploit

http://osvdb.org/75495

Source: cve@mitre.org

http://securityreason.com/securityalert/8380

Source: cve@mitre.org

http://www.us-cert.gov/control_systems/pdf/ICS-ALERT-11-256-06.pdf

Source: cve@mitre.org

US Government Resource

https://exchange.xforce.ibmcloud.com/vulnerabilities/69765

Source: cve@mitre.org

http://aluigi.altervista.org/adv/twincat_1-adv.txt