Is CVE-2011-4875 in the CISA KEV catalog?

No. CVE-2011-4875 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2011-4875?

CVE-2011-4875 has a CVSS v2 base score of 9.3 (HIGH).

What is the EPSS score for CVE-2011-4875?

CVE-2011-4875 has an EPSS score of 14.01% (96th percentile), estimating the probability of exploitation in the next 30 days.

CVE & CISA-KEV Catalog

CVE-2011-4875

HIGHEPSS 96th pctl

9.3

CVSS v2

NVD

Description

Stack-based buffer overflow in HmiLoad in the runtime loader 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, when Transfer Mode is enabled, allows remote attackers to execute arbitrary code via vectors related to Unicode strings.

CWE-119Buffer Overflow

CVSS v2 Vector

No CVSS vector data available.

Exploit Intelligence

14.01%probability of exploitation in 30 days

96thpercentile

Very high risk: more likely to be exploited than 96% of all known CVEs.

References

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-04-29.