Is CVE-2011-4535 actively exploited?

A proof-of-concept exploit is publicly available for CVE-2011-4535, but active exploitation has not been confirmed.

Can CVE-2011-4535 be exploited remotely?

Yes. CVE-2011-4535 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2011-4535?

CVE-2011-4535 has a CVSS score of 6.8 (MEDIUM).

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MEDIUMPOC

CVE-2011-4535

CWE-119Published: April 3, 2012· Updated: Jun 16, 2026

6.8

CVSS v3.1

Official Description

Buffer overflow in TurboPower Abbrevia before 4.0, as used in ScadaTEC ScadaPhone 5.3.11.1230 and earlier, ScadaTEC ModbusTagServer 4.1.1.81 and earlier, and other products, allows remote attackers to cause a denial of service (application crash) or possibly execute arbitrary code via a crafted ZIP file.

NVD Source

Technical Analysis

CVE-2011-4535 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-2011-4535. 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.