CVE-2011-4879: siemens simatic_hmi_panels Improper Input Validation
Vulnerability summary
CVE-2011-4879 is a high (CVSS 8.5) Improper Input Validation vulnerability in siemens simatic_hmi_panels. EPSS estimates a 12.11% chance of exploitation in the next 30 days, higher than 96.1% of scored vulnerabilities. 1 public exploit is recorded.
Timeline
- 03-02-2012PublishedVulnerability first disclosed.
- 07-08-2024Last modifiedVulnerability information updated.
Description
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.
CVSS metrics
1 score · 1 source · 1 versionEPSS trend
Probability
12.11%
Chance of exploitation in the next 30 days
Percentile
96%
Versus all other CVEs
30-day change
0.00 pp
From 12.11% on 18-09-2026
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
1 foundSiemens SIMATIC WinCC Flexible (Runtime) - Multiple Vulnerabilities
Maturity: poc
Weaknesses
CWE · root causeAffected systems
Siemens4 products
- simatic_hmi_panelscomfort_panels | mobile_panels | mp | op | tp
- wincc≤ v11 | v11 | v11:sp1
- wincc_flexible2004 | 2005 | 2007 | 2008 | 2008:sp1 | 2008:sp2
- wincc_runtime_advancedv11
1 vendor · 4 products
References
8 links- www.us-cert.gov/control_systems/pdf/ICS-ALERT-11-332-02.pdfX Refsource MISC
- www.us-cert.gov/control_systems/pdf/ICS-ALERT-11-332-02A.pdfX Refsource MISC
- aluigi.org/adv/winccflex_1-adv.txtX Refsource MISC