Vulnerability Monitor

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CVE-2011-4879

miniweb.exe in the HMI web server in Siemens WinCC flexible 2004, 2005, 2007, and 2008 before SP3; WinCC V11 (aka TIA portal) before SP2 Update 1; the TP, OP, MP, Comfort Panels, and Mobile Panels SIMATIC HMI panels; WinCC V11 Runtime Advanced; and WinCC flexible Runtime does not properly handle URIs beginning with a 0xfa character, which allows remote attackers to read data from arbitrary memory locations or cause a denial of service (application crash) via a crafted POST request.

Security Impact Summary

CVE-2011-4879 is a security vulnerability that . Impacting 5 products from siemens, from siemens, from siemens and 2 others, organizations running these solutions should prioritize assessment and patching.

Historical Context

Documented in 2012, this vulnerability occurred amid the cloud computing expansion era, where traditional network perimeter security models were being reevaluated. Organizations were transitioning from isolated infrastructure to interconnected systems, creating new attack surfaces that vulnerabilities like this could exploit.

Published

2012-02-03T20:55:02.077

Last Modified

2025-04-11T00:51:21.963

Status

Deferred

Source

[email protected]

Severity

CVSSv2: 8.5 (HIGH)

CVSSv2 Vector

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

Access Vector: NETWORK
Access Complexity: LOW
Authentication: NONE
Confidentiality Impact: PARTIAL
Integrity Impact: NONE
Availability Impact: COMPLETE

Exploitability Score

10.0

Impact Score

7.8

Weaknesses

Type: Primary
CWE-20

Affected Vendors & Products

Type	Vendor	Product	Version/Range	Vulnerable?
Application	siemens	wincc_flexible	2004	Yes
Application	siemens	wincc_flexible	2005	Yes
Application	siemens	wincc_flexible	2007	Yes
Application	siemens	wincc_flexible	2008	Yes
Application	siemens	wincc_flexible	2008	Yes
Application	siemens	wincc_flexible	2008	Yes
Application	siemens	wincc	≤ v11	Yes
Application	siemens	wincc	v11	Yes
Application	siemens	wincc	v11	Yes
Application	siemens	simatic_hmi_panels	comfort_panels	Yes
Application	siemens	simatic_hmi_panels	mobile_panels	Yes
Application	siemens	simatic_hmi_panels	mp	Yes
Application	siemens	simatic_hmi_panels	op	Yes
Application	siemens	simatic_hmi_panels	tp	Yes
Application	siemens	wincc_runtime_advanced	v11	Yes
Application	siemens	wincc_flexible_runtime	*	Yes

References

http://aluigi.org/adv/winccflex_1-adv.txt ([email protected])
http://www.exploit-db.com/exploits/18166 ([email protected])
http://www.osvdb.org/77384 ([email protected])
http://www.siemens.com/corporate-technology/pool/de/forschungsfelder/siemens_security_advisory_ssa-345442.pdf Vendor Advisory ([email protected])
http://www.us-cert.gov/control_systems/pdf/ICS-ALERT-11-332-02.pdf ([email protected])
http://www.us-cert.gov/control_systems/pdf/ICS-ALERT-11-332-02A.pdf ([email protected])
http://www.us-cert.gov/control_systems/pdf/ICSA-12-030-01.pdf US Government Resource ([email protected])
https://exchange.xforce.ibmcloud.com/vulnerabilities/71453 ([email protected])
http://aluigi.org/adv/winccflex_1-adv.txt (af854a3a-2127-422b-91ae-364da2661108)
http://www.exploit-db.com/exploits/18166 (af854a3a-2127-422b-91ae-364da2661108)
http://www.osvdb.org/77384 (af854a3a-2127-422b-91ae-364da2661108)
http://www.siemens.com/corporate-technology/pool/de/forschungsfelder/siemens_security_advisory_ssa-345442.pdf Vendor Advisory (af854a3a-2127-422b-91ae-364da2661108)
http://www.us-cert.gov/control_systems/pdf/ICS-ALERT-11-332-02.pdf (af854a3a-2127-422b-91ae-364da2661108)
http://www.us-cert.gov/control_systems/pdf/ICS-ALERT-11-332-02A.pdf (af854a3a-2127-422b-91ae-364da2661108)
http://www.us-cert.gov/control_systems/pdf/ICSA-12-030-01.pdf US Government Resource (af854a3a-2127-422b-91ae-364da2661108)
https://exchange.xforce.ibmcloud.com/vulnerabilities/71453 (af854a3a-2127-422b-91ae-364da2661108)

How SecUtils Interprets This CVE

SecUtils normalizes and enriches National Vulnerability Database (NVD) records by standardizing vendor and product identifiers, aggregating vulnerability metadata from both NVD and MITRE sources, and providing structured context for security teams. For siemens's affected products, we extract Common Platform Enumeration (CPE) data, Common Weakness Enumeration (CWE) classifications, CVSS severity metrics, and reference data to enable rapid vulnerability prioritization and asset correlation. This record contains no exploit code, proof-of-concept instructions, or attack methodologies—only defensive intelligence necessary for patch management, risk assessment, and security operations.