CVE-2011-4515 — Siemens WinCC (TIA Portal) 11 uses a reversible algorithm for storing HMI web-application passwords in world-readable and world-writable files, which allows local users to obtain sensitive information by leveraging (1) physical access or (2) Sm@rt Server access

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MEDIUM

Siemens WinCC (TIA Portal) 11 uses a reversible algorithm for storing HMI web-application passwords in world-readable and world-writable files, which allows local users to obtain sensitive information by leveraging (1) physical access or (2) Sm@rt Server access

Published Mar 21, 2013

4.6

MEDIUM

CVSS 2.0

EPSS 0.38%

Description

Siemens WinCC (TIA Portal) 11 uses a reversible algorithm for storing HMI web-application passwords in world-readable and world-writable files, which allows local users to obtain sensitive information by leveraging (1) physical access or (2) Sm@rt Server access.

Affected products

Remediation

No remediation recorded yet.

Metrics

0.38% 0.00381

Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.

EPSS probability 0.00381

Score over time

2022–2026

EPSS v2
EPSS v3
EPSS v4
EPSS v5

Percentile over time

EPSS v2
EPSS v3
EPSS v4
EPSS v5

Table of values (11 key points)

Flat stretches are collapsed; showing up to 120 newest points.

Date	Score	Percentile	Model
Oct 1, 2026	0.38% (0.00381)	29.70th	v5 (v2026.06.15)
Jun 15, 2026	0.38% (0.00381)	29.71th	v5 (v2026.06.15)
Mar 17, 2025	0.05% (0.00054)	14.21th	v4 (v2025.03.14)
Dec 12, 2024	0.06% (0.00058)	25.90th	v3 (v2023.03.01)
May 15, 2024	0.05% (0.00051)	19.11th	v3 (v2023.03.01)
Feb 8, 2024	0.05% (0.00051)	17.11th	v3 (v2023.03.01)
Mar 7, 2023	0.06% (0.00059)	23.04th	v3 (v2023.03.01)
Mar 6, 2023	0.89% (0.00885)	27.89th	v2 (v2022.01.01)
Sep 10, 2022	0.89% (0.00885)	26.24th	v2 (v2022.01.01)
Apr 1, 2022	0.89% (0.00885)	24.24th	v2 (v2022.01.01)
Feb 4, 2022	0.89% (0.00885)	10.50th	v2 (v2022.01.01)

Weaknesses (1)

CWE-255

References (2)

http://ics-cert.us-cert.gov/pdf/ICSA-13-079-03.pdf
x_refsource_MISCUS Government Resource
http://www.siemens.com/corporate-technology/pool/de/forschungsfelder/siemens_security_advisory_ssa-212483.pdf
x_refsource_CONFIRMVendor Advisory

Link	Providers	Tags
http://ics-cert.us-cert.gov/pdf/ICSA-13-079-03.pdf		x_refsource_MISCUS Government Resource
http://www.siemens.com/corporate-technology/pool/de/forschungsfelder/siemens_security_advisory_ssa-212483.pdf		x_refsource_CONFIRMVendor Advisory

Change history (0)

No recorded changes yet.

Sources

CVE.org / MITRE

Status PUBLISHED

Assigner certcc

Published Mar 21, 2013

Updated Sep 17, 2024

Reserved Nov 22, 2011

Link CVE-2011-4515

CISA Vulnrichment

Updated n/a

NVD

Status Modified

Modified Jun 16, 2026

Link CVE-2011-4515

Red Hat

Severity n/a

Public date n/a

Links CVE-2011-4515