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.
Published 2011-09-16 14:28:12
Updated 2017-08-29 01:30:13
Source MITRE
View at NVD,   CVE.org
Vulnerability category: OverflowDenial of service

Products affected by CVE-2011-3486

Exploit prediction scoring system (EPSS) score for CVE-2011-3486

71.50%
Probability of exploitation activity in the next 30 days EPSS Score History
~ 98 %
Percentile, the proportion of vulnerabilities that are scored at or less

Metasploit modules for CVE-2011-3486

  • Beckhoff TwinCAT SCADA PLC 2.11.0.2004 DoS
    Disclosure Date: 2011-09-13
    First seen: 2020-04-26
    auxiliary/dos/scada/beckhoff_twincat
    The Beckhoff TwinCAT version <= 2.11.0.2004 can be brought down by sending a crafted UDP packet to port 48899 (TCATSysSrv.exe). Authors: - Luigi Auriemma - jfa

CVSS scores for CVE-2011-3486

Base Score Base Severity CVSS Vector Exploitability Score Impact Score Score Source First Seen
5.0
MEDIUM AV:N/AC:L/Au:N/C:N/I:N/A:P
10.0
2.9
NIST

CWE ids for CVE-2011-3486

  • 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.
    Assigned by: nvd@nist.gov (Primary)

References for CVE-2011-3486

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