CVE-2011-4520: n/a vulnerability

Security readout for executives and security teams

CVE-2011-4520 is a heap buffer overflow in a MICROSYS PROMOTIC ActiveX component before version 8.1.5. A remote attacker could use a crafted web page to crash affected software, causing denial of service. The provided sources do not show active exploitation or a CVSS score. Exposure is most likely in legacy environments running MICROSYS PROMOTIC before 8.1.5 where the vulnerable ActiveX component can be invoked from browser-based workflows or operator workstations. Treat this as a legacy industrial software exposure issue. Priority is moderate unless PROMOTIC is still used on critical operator workstations, where an induced crash could affect availability. Mitigation focus: Inventory PROMOTIC installations and identify versions before 8.1.5.; Review MICROSYS PROMOTIC 8.1.5 release guidance for the vendor fix.; Upgrade affected PROMOTIC systems to 8.1.5 or later where supported..

Prepared: Jun 14, 2026, 22:07 UTC (UTC+00:00)

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

Potential ATT&CK relevance

Conservative CVE-to-ATT&CK context

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CVE-2011-4520 mapping review

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Vulnerability profileCVE Program record

Severity: Unknown
CVSS: Not scored
Known Exploited: No
Published: May 23, 2013, 17:00 UTC (UTC+00:00)

Official CVE source material

CNA and ADP enrichment extracted from CVE v5

These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.

0CVSS vectors

0Timeline events

0ADP providers

1Source links

CVSS and timeline data

No CVSS vectors or timeline events were available in the normalized CVE source material.

Source materials

CVE List V5 sourceCVE List V5

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus

n/an/an/aListed

Weakness

CWE details

No CWE listed

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CVE-2011-4520: Heap-based buffer overflow in an ActiveX component in MICROSYS PROMOTIC before 8.1.5 allows remote attacker...