What is CVE-2011-3491?

CVE-2011-3491 is a vulnerability in Progea Movicon Powerhmi, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. Published 2011-09-16.

Is CVE-2011-3491 known to be exploited?

1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Buffer overflow in Progea Movicon Powerhmi

CVE-2011-3491

Heap-based buffer overflow in Progea Movicon / PowerHMI 11.2.1085 and earlier allows remote attackers to cause a denial of service (crash) and possibly execute arbitrary code via a negative Content-Length field.

Vulnerability class: Buffer Overflow

Published 2011-09-16 · last modified 2026-06-16.

CVSS v2 metric

CVSS v2 base score 10.0 (High). Vector: AV:N/AC:L/Au:N/C:C/I:C/A:C. This CVE predates CVSS v3 and has no v3 score from NVD.

EPSS exploit prediction

EPSS: 0.162 (96.9th percentile), scored 2026-10-02.

Moderate probability of exploitation in the next 30 days — watch for active exploitation reports. 97th percentile — 96.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.162 · newest: 0.162 · change: 0.000

Affected products

Progea Movicon Powerhmi — versions 11, 11.0.1017

Weakness classification (CWE)

CWE-119 — Improper Restriction of Operations within the Bounds of a Memory Buffer

Public proof-of-concept exploits

ARPSyndicate/cve-scores

References

aluigi.altervista.org/adv/movicon_1-adv.txt (Exploit)
www.us-cert.gov/control_systems/pdf/ICS-ALERT-11-256-01.pdf (US Government Resource)
exchange.xforce.ibmcloud.com/vulnerabilities/69787 (vdb-entry)
osvdb.org/75494 (vdb-entry)

Frequently asked questions

What is CVE-2011-3491?: CVE-2011-3491 is a vulnerability in Progea Movicon Powerhmi, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. Published 2011-09-16.
Is CVE-2011-3491 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.