Is CVE-2023-3935 actively exploited?

No active exploitation of CVE-2023-3935 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2023-3935 be exploited remotely?

Yes. CVE-2023-3935 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2023-3935?

CVE-2023-3935 has a CVSS score of 9.8 (CRITICAL).

HOME VULNERABILITIESCVE-2023-3935

CRITICAL

CVE-2023-3935

CWE-787Published: September 13, 2023· Updated: Jun 17, 2026

9.8

CVSS v3.1

Official Description

A heap buffer overflow vulnerability in Wibu CodeMeter Runtime network service up to version 7.60b allows an unauthenticated, remote attacker to achieve RCE and gain full access of the host system.

NVD Source

Technical Analysis

CVE-2023-3935 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 9.8.

From a weakness classification perspective (CWE-787): Out-of-bounds write vulnerabilities can lead to data corruption, crashes, or arbitrary code execution.

CVSS v3.1 Vector Breakdown

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges Req.None

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityHigh

IntegrityHigh

AvailabilityHigh

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected Vendors & Products

phoenixcontact6 product(s)

activation wizarde-mobility charging suitefl network manageriol-confmodule type package designerplcnext engineer

trumpf17 product(s)

oseonprogrammingtubeteczonebendtops unfoldtopscalculationtrumpflicenseexperttrutopstrutops cell classictrutops cell sw48trutops mark 3dtrutopsboosttrutopsfab+5

wibu1 product(s)

codemeter runtime

Source: NVD CPE · 25 total CPE entries

Exploit & PoC Resources

NO KNOWN EXPLOITNo public exploit confirmed at this time

Exploit-DB

Offensive Security exploit database

GitHub PoC Search

Community PoC repositories

Rapid7 / Metasploit

Metasploit module search

PacketStorm

Security advisories & exploits

External links open in a new tab. Always verify in a controlled environment before use.

Official Patches & Advisories

ADVISORYhttps://cdn.wibu.com/fileadmin/wibu_downloads/security_advisories/AdvisoryWIBU-230704-01-v3.0.pdf

ADVISORYhttps://cert.vde.com/en/advisories/VDE-2023-030/

ADVISORYhttps://cert.vde.com/en/advisories/VDE-2023-031/

ADVISORYhttps://cdn.wibu.com/fileadmin/wibu_downloads/security_advisories/AdvisoryWIBU-230704-01-v3.0.pdf

ADVISORYhttps://cert.vde.com/en/advisories/VDE-2023-030/

ADVISORYhttps://cert.vde.com/en/advisories/VDE-2023-031/

News & Research Mentioning CVE-2023-3935

CODESYS in Festo Automation Suite

CISA Alerts· Mar 17, 2026

View CSAF Summary 3. TECHNICAL DETAILS The following versions of CODESYS in Festo Automation Suite are affected: FESTO Software Festo Automation Suite (versions prior to 2.8.0.138) installed with CODESYS Software CODESYS Development System (3.0) vers:all/* FESTO Software Festo Automation Suite (versions prior to 2.8.0.138) installed with CODESYS Software CODESYS Development System (3.5.16.10) vers:all/* FESTO Software Festo Automation Suite (2.8.0.137) installed with CODESYS Software CODESYS Development System (3.0) vers:all/* FESTO Software Festo Automation Suite (2.8.0.137) installed with CODESYS Software CODESYS Development System (3.5.16.10) vers:all/* CVSS Vendor Equipment Vulnerabilities v3 9.8 FESTO, CODESYS CODESYS in Festo Automation Suite D [xlite_meta score:79 src:CISA Alerts xlite_fp:17fca52d9c8a749f3ecbaf32eff92f14e856489804a56a18cc6c0d7f4acd2a9d]