Is CVE-2011-3499 actively exploited?

A proof-of-concept exploit is publicly available for CVE-2011-3499, but active exploitation has not been confirmed.

Can CVE-2011-3499 be exploited remotely?

Yes. CVE-2011-3499 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2011-3499?

CVE-2011-3499 has a CVSS score of 10.0 (CRITICAL).

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CRITICALPOC

CVE-2011-3499

CWE-119Published: September 16, 2011· Updated: Jun 16, 2026

10.0

CVSS v3.1

Official Description

Progea Movicon / PowerHMI 11.2.1085 and earlier allows remote attackers to cause a denial of service (memory corruption and crash) and possibly execute arbitrary code via an EIDP packet with a large size field, which writes a zero byte to an arbitrary memory location.

NVD Source

Technical Analysis

CVE-2011-3499 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

Exploitation requires some privileges, which limits the exposure to scenarios where an attacker has already gained initial access.

A proof-of-concept (PoC) exploit exists for CVE-2011-3499. While not yet confirmed in active campaigns, the availability of PoC code increases exploitation risk substantially.

From a weakness classification perspective (CWE-119): Buffer overflow vulnerabilities can lead to arbitrary code execution or denial of service by corrupting adjacent memory.