Is CVE-2011-4514 being actively exploited?

CVE-2011-4514 is not currently listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.

What is the CVSS score for CVE-2011-4514?

CVE-2011-4514 has a CVSS 2.0 base score of 10.0 (HIGH).

CVE-2011-4514

HIGH · CVSS 10.0EPSS 3.4%EU EUVD

The TELNET daemon in Siemens WinCC flexible 2004, 2005, 2007, and 2008; WinCC V11 (aka TIA portal); the TP, OP, MP, Comfort Panels, and Mobile Panels SIMATIC HMI panels; WinCC V11 Runtime Advanced; and WinCC flexible Runtime does not perform authentication, which makes it easier for remote attackers to obtain access via a TCP session.

Key facts

CVSS score: 10.0 (v2.0)
Severity: HIGH
CVSS vector: AV:N/AC:L/Au:N/C:C/I:C/A:C
Weakness (CWE): CWE-287
EPSS score: 3.4% (89th percentile)
In CISA KEV: No
In EU EUVD: Yes (EUVD-2011-4440)
Published: February 3, 2012
NVD last modified: June 16, 2026
Status: Modified

EU Vulnerability Database (EUVD)

This vulnerability is also tracked by ENISA as EUVD-2011-4440 in the EU Vulnerability Database. Last updated in EUVD on September 17, 2024.

View on the EU Vulnerability Database

Affected products

siemens / simatic hmi panels
siemens / simatic hmi panels
siemens / simatic hmi panels
siemens / simatic hmi panels
siemens / simatic hmi panels
siemens / wincc
siemens / wincc flexible
siemens / wincc flexible
siemens / wincc flexible
siemens / wincc flexible
siemens / wincc flexible runtime
siemens / wincc runtime advanced

References

http://www.siemens.com/corporate-technology/pool/de/forschungsfelder/siemens_security_advisory_ssa-345442.pdf(Vendor Advisory)
http://www.us-cert.gov/control_systems/pdf/ICSA-12-030-01.pdf(US Government Resource)

Last updated September 17, 2026 · Source: NVD, CISA KEV, FIRST.org EPSS

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