{"id":"CVE-2011-4879","url":"https://www.cyber-defence.io/tools/cve/CVE-2011-4879","generatedAt":"2026-10-28T02:17:44.635Z","title":"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…","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.","published":"2012-02-03T20:55:02.000Z","lastModified":"2026-06-16T23:35:34.000Z","status":"Modified","sourceIdentifier":"cret@cert.org","cvss":{"version":"2.0","score":8.5,"severity":"HIGH","vector":"AV:N/AC:L/Au:N/C:P/I:N/A:C"},"cwe":["CWE-20"],"affected":["siemens/wincc flexible","siemens/wincc","siemens/simatic hmi panels","siemens/wincc runtime advanced","siemens/wincc flexible runtime"],"epss":{"score":0.12105,"percentile":0.96119,"date":"2026-10-26","history":[]},"kev":{"listed":false},"exploits":{"count":1,"verified":true,"firstPublished":"2011-11-28","source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[{"edbId":18166,"kind":"exploit","title":"Siemens SIMATIC WinCC Flexible (Runtime) - Multiple Vulnerabilities","url":"https://www.exploit-db.com/exploits/18166","sourceUrl":"https://gitlab.com/exploit-database/exploitdb/-/blob/main/exploits/windows/dos/18166.txt","file":"exploits/windows/dos/18166.txt","published":"2011-11-28","added":"2011-11-28","updated":"2011-11-28","author":"Luigi Auriemma","type":"dos","platform":"windows","port":null,"verified":true,"codes":["CVE-2011-4879","CVE-2011-4878","CVE-2011-4877","CVE-2011-4876","CVE-2011-4875","OSVDB-77384","OSVDB-77383","OSVDB-77382","OSVDB-77381","OSVDB-77380"],"tags":null,"aliases":null,"applicationUrl":null,"screenshotUrl":null,"referenceUrl":null}]},"verdict":{"level":"urgent","text":"EPSS puts the probability of exploitation in the next 30 days at 12.1%, higher than 96% of all known CVEs. Patch or mitigate before the next change window."},"changes":[],"references":[{"url":"http://aluigi.org/adv/winccflex_1-adv.txt","source":"cret@cert.org"},{"url":"http://www.exploit-db.com/exploits/18166","source":"cret@cert.org"},{"url":"http://www.osvdb.org/77384","source":"cret@cert.org"},{"url":"http://www.siemens.com/corporate-technology/pool/de/forschungsfelder/siemens_security_advisory_ssa-345442.pdf","tags":["Vendor Advisory"],"source":"cret@cert.org"},{"url":"http://www.us-cert.gov/control_systems/pdf/ICS-ALERT-11-332-02.pdf","source":"cret@cert.org"},{"url":"http://www.us-cert.gov/control_systems/pdf/ICS-ALERT-11-332-02A.pdf","source":"cret@cert.org"},{"url":"http://www.us-cert.gov/control_systems/pdf/ICSA-12-030-01.pdf","tags":["US Government Resource"],"source":"cret@cert.org"},{"url":"https://exchange.xforce.ibmcloud.com/vulnerabilities/71453","source":"cret@cert.org"},{"url":"http://aluigi.org/adv/winccflex_1-adv.txt","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.exploit-db.com/exploits/18166","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.osvdb.org/77384","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.siemens.com/corporate-technology/pool/de/forschungsfelder/siemens_security_advisory_ssa-345442.pdf","tags":["Vendor Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.us-cert.gov/control_systems/pdf/ICS-ALERT-11-332-02.pdf","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.us-cert.gov/control_systems/pdf/ICS-ALERT-11-332-02A.pdf","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.us-cert.gov/control_systems/pdf/ICSA-12-030-01.pdf","tags":["US Government Resource"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://exchange.xforce.ibmcloud.com/vulnerabilities/71453","source":"af854a3a-2127-422b-91ae-364da2661108"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2011-4879","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}