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Full vulnerability report · 2023
CVE-2023-3935High confidence

Wibu: Buffer Overflow in CodeMeter Runtime

Wibu · CodeMeter Runtime

9.8CriticalCVSS 3.1
Recommended action
Within 72 hours

Critical technical impact with a remotely reachable, unauthenticated path; no CISA KEV confirmation is currently recorded.

Patch available
Direct vendor intelligence

Authoritative vendor CSAF and VEX advisories

Structured product status and remediation from the issuing vendor. Product-state explanations are always visible; large lists can be searched or downloaded.

3 current
SSA-625850 · CSAF 2.0 · revision 2 · finalSiemens ProductCERTSSA-625850: Multiple WIBU Systems CodeMeter Vulnerabilities Affecting the Desigo CC Product Family and SENTRON powermanager
5 known affected

The vendor explicitly identifies these products as affected by this CVE.

  • Desigo CC family V5.0
  • Desigo CC family V5.1
  • Desigo CC family V6
  • Desigo CC family V7
  • SENTRON powermanager
Summary
In CodeMeter Runtime versions up to 7.60b, there is a heap buffer overflow vulnerability which can potentially lead to a remote code execution. Currently, no PoC is known to us. To exploit the heap overflow, additional protection mechanisms need to be broken. Remote access is only possible if CodeMeter is configured as a server. If CodeMeter is not configured as a server, the adversary would need to log in to the machine where the CodeMeter Runtime is running or trick the user into sending a malicious request to CodeMeter. This might result in an escalation of privilege. (WIBU-230704-01)
Remediation
Install the patch (available at https://support.industry.siemens.com/cs/ww/en/view/109825787/), which can be applied to all released versions
SSA-240541 · CSAF 2.0 · revision 4 · interimSiemens ProductCERTSSA-240541: WIBU Systems CodeMeter Heap Buffer Overflow Vulnerability in Industrial Products
14 known affected

The vendor explicitly identifies these products as affected by this CVE.

  • PSS(R)CAPE V14
  • PSS(R)CAPE V15
  • PSS(R)E V34
  • PSS(R)E V35
  • PSS(R)ODMS V13.0
  • PSS(R)ODMS V13.1
  • SIMATIC PCS neo V3
  • SIMATIC PCS neo V4.0
  • SIMATIC WinCC OA V3.17
  • SIMATIC WinCC OA V3.18
  • SIMATIC WinCC OA V3.19
  • SIMIT Simulation Platform
Summary
In CodeMeter Runtime versions up to 7.60b, there is a heap buffer overflow vulnerability which can potentially lead to a remote code execution. Currently, no PoC is known to us. To exploit the heap overflow, additional protection mechanisms need to be broken. Remote access is only possible if CodeMeter is configured as a server. If CodeMeter is not configured as a server, the adversary would need to log in to the machine where the CodeMeter Runtime is running or trick the user into sending a malicious request to CodeMeter. This might result in an escalation of privilege. (WIBU-230704-01)
Remediation
Update to V1.0 SP2 Update 2 or later version
SCA-2023-0009 · CSAF 2.0 · revision 4 · finalSICK PSIRTVulnerability in Wibu-Systems CodeMeter Runtime affects multiple SICK products
6 known affected

The vendor explicitly identifies these products as affected by this CVE.

  • SICK SIM2000ST-E >=1.8.0
  • SICK AppEngine x86 all versions
  • SICK TDC-E >=FW L4M 2022.4
  • SICK LiDAR-LOC <2.4.1
  • SICK CODE-LOC <2.4.1
  • SICK FlowGate all versions
Summary
In CodeMeter Runtime versions up to 7.60b, there is a heap buffer overflow vulnerability which can potentially lead to a remote code execution. Currently, no PoC is known to us. To exploit the heap overflow, additional protection mechanisms need to be broken. Remote access is only possible if CodeMeter is configured as a server. If CodeMeter is not configured as a server, the adversary would need to log in to the machine where the CodeMeter Runtime is running or trick the user into sending a malicious request to CodeMeter. This might result in an escalation of privilege.
Remediation
Update to a codemeter runtime version >=7.60c.
Optional official sources

National CERT insights
?CERT means Computer Emergency Response Team; CSIRT is the closely related term Computer Security Incident Response Team.

Select the national-authority views to include. The exact source language is shown on each matched advisory. Your choice is remembered on this device and encoded in the shareable URL.

Official European source

ENISA European Vulnerability Database

Official EUVD identifiers, advisory evidence and known-exploited context. Missing fields are not treated as evidence of low risk.

1 current
ENISA EUVD identifier

EUVD-2023-44561

No EUVD known-exploited evidence

ENISA has published the identifier mapping but no EUVD description has been stored yet.

EUVD state
Present in the current official mapping
Known exploitation
Not present in the current ENISA EUVD known-exploited dataset. This is not proof of no exploitation.
ENISA score
Not supplied in the stored EUVD record
Advisory evidence
No linked advisory details stored yet
Recommended actionWithin 72 hours

Critical technical impact with a remotely reachable, unauthenticated path; no CISA KEV confirmation is currently recorded.

Patch available
01

What, why and how

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.

What

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.

Why

A bounds error lets data be written beyond the intended memory region, potentially corrupting control data.

How

An attacker operating through a network path may attempt exploitation without authentication or user interaction. If successful, the issue may cause the confidentiality, integrity or availability impact described by the vendor.

What

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.

Why

A bounds error lets data be written beyond the intended memory region, potentially corrupting control data.

How

An attacker operating through a network path may attempt exploitation without authentication or user interaction. If successful, the issue may cause the confidentiality, integrity or availability impact described by the vendor.

02

Exploit reality and attack path

CVSS severity, EPSS forecast probability, public exploit material and CISA-confirmed exploitation are separate signals.

Observed exploitation
?Confirmed exploitation and public exploit material are separate signals. Attacks can occur without public proof-of-concept or exploit code.
No confirmed evidence

No CISA KEV match was present at the last successful refresh. This means no confirmation from that source, not proof of no exploitation.

Public PoC / exploit material
?Confirmed exploitation and public exploit material are separate signals. Attacks can occur without public proof-of-concept or exploit code.
None recorded

No exploit-tagged reference or CISA SSVC proof-of-concept state is currently recorded. Research may still exist outside the structured feeds.

Likely attack path
a network path → Out-of-bounds Write → cause the confidentiality, integrity or availability impact described by the vendor
Attack surface
Network
Privileges required
None: unauthenticated exploitation is possible
User interaction
None
Attack complexity
Low: no specialised conditions are recorded
Security boundary
Unchanged: impact remains within the vulnerable component's security authority
Weakness
?CWE means Common Weakness Enumeration: a standard category for the underlying weakness.
CWE-787 ↗

CWE-787: Out-of-bounds Write. The product writes data past the end, or before the beginning, of the intended buffer.

CVSS vector
?CVSS means Common Vulnerability Scoring System. The vector records the metric values used to calculate technical severity.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Common Vulnerability Scoring System 3.1: the compact vector below is decoded into plain language.

AVNetworkAttack vector: The vulnerable component can be reached over a network.ACLowAttack complexity: No specialised conditions are required beyond attacker-controlled input.PRNonePrivileges required: The attacker does not need an account or existing privileges.UINoneUser interaction: No action by another user is required.SUnchangedScope: The security impact remains within the vulnerable component's authority.CHighConfidentiality impact: A successful attack can cause a major loss.IHighIntegrity impact: A successful attack can cause a major loss.AHighAvailability impact: A successful attack can cause a major loss.
Post-exploitation / living off the land
No specific living-off-the-land technique is confirmed in the structured sources. Monitor normal administration tools for activity inconsistent with the affected service's baseline.
NetworkUnauthenticatedCWE-787
A

Official authority intelligence

Only matched European and national findings are included. Language selectors and unavailable sources are omitted.

BSI · German · WID-SEC-W-2024-0943CODESYS: Mehrere Schwachstellen

Ein Angreifer kann mehrere Schwachstellen in CODESYS ausnutzen, um beliebigen Code auszuführen, Sicherheitsmaßnahmen zu umgehen, einen Denial-of-Service-Zustand herbeizuführen, vertrauliche Informationen offenzulegen, Dateien zu manipulieren oder einen Brute-Force-Angriff durchzuführen.

Official advisory
BSI · German · WID-SEC-W-2023-2311Wibu-Systems CodeMeter: Schwachstelle ermöglicht Codeausführung und Privilegienerweiterung

Ein entfernter anonymer Angreifer kann eine Schwachstelle in Wibu-Systems CodeMeter ausnutzen, um beliebigen Code auszuführen oder seine Privilegien zu erweitern.

Official advisory
CERT-FR · French · CERTFR-2023-AVI-0935Multiples vulnérabilités dans les produits Siemens

ord?id=CVE-2023-35788 Référence CVE CVE-2023-38070 https://www.cve.org/CVERecord?id=CVE-2023-38070 Référence CVE CVE-2023-38071 https://www.cve.org/CVERecord?id=CVE-2023-38071 Référence CVE CVE-2023-38072 https://www.cve.org/CVERecord?id=CVE-2023-38072 Référence CVE CVE-2023-38073 https://www.cve.org/CVERecord?id=CVE-2023-38073 Référence CVE CVE-2023-38074 https://www.cve.org/CVERecord?id=CVE-2023-38074 Référence CVE CVE-2023-38075 https://www.cve.org/CVERecord?id=CVE-2023-38075 Référence CVE CVE-2023-38076 https://www.cve.org/CVERecord?id=CVE-2023-38076 Référence CVE CVE-2023-3817 https://www.cve.org/CVERecord?id=CVE-2023-3817 Référence CVE CVE-2023-3935 https://www.cve.org/CVERecord?id=CVE-2023-3935 Référence CVE CVE-2023-41032 https://www.cve.org/CVERecord?id=CVE-2023-41032 Référence CVE CVE-2023-41033 https://www.cve.org/CVERecord?id=CVE-2023-41033 Référence CVE CVE-2023-43503 https://www.cve.org/CVERecord?id=CVE-2023-43503 Référence CVE CVE-2023-43504 https://www.cve.org/CVERecord?id=CVE-2023-43504 Référence CVE CVE-2023-43505 https://www.cve.org/CVERecord?id=CVE-2023-43505 Référence CVE CVE-2023-44317 https://www.cve.org/CVERecord?id=CVE-2023-44317 Référence CVE CVE-2023-44318 https://www.cve.org/CVERecord?id=CVE-2023-44318 Référence CVE CVE-2023-44319 https://www.cve.org/CVERecord?id=C

Official advisory
CERT-FR · French · CERTFR-2023-AVI-0733Multiples vulnérabilités dans les produits Siemens

d?id=CVE-2023-28831 Référence CVE CVE-2023-31041 https://www.cve.org/CVERecord?id=CVE-2023-31041 Référence CVE CVE-2023-38070 https://www.cve.org/CVERecord?id=CVE-2023-38070 Référence CVE CVE-2023-38071 https://www.cve.org/CVERecord?id=CVE-2023-38071 Référence CVE CVE-2023-38072 https://www.cve.org/CVERecord?id=CVE-2023-38072 Référence CVE CVE-2023-38073 https://www.cve.org/CVERecord?id=CVE-2023-38073 Référence CVE CVE-2023-38074 https://www.cve.org/CVERecord?id=CVE-2023-38074 Référence CVE CVE-2023-38075 https://www.cve.org/CVERecord?id=CVE-2023-38075 Référence CVE CVE-2023-38076 https://www.cve.org/CVERecord?id=CVE-2023-38076 Référence CVE CVE-2023-3935 https://www.cve.org/CVERecord?id=CVE-2023-3935 Référence CVE CVE-2023-40724 https://www.cve.org/CVERecord?id=CVE-2023-40724 Référence CVE CVE-2023-40725 https://www.cve.org/CVERecord?id=CVE-2023-40725 Référence CVE CVE-2023-40726 https://www.cve.org/CVERecord?id=CVE-2023-40726 Référence CVE CVE-2023-40727 https://www.cve.org/CVERecord?id=CVE-2023-40727 Référence CVE CVE-2023-40728 https://www.cve.org/CVERecord?id=CVE-2023-40728 Référence CVE CVE-2023-40729 https://www.cve.org/CVERecord?id=CVE-2023-40729 Référence CVE CVE-2023-40730 https://www.cve.org/CVERecord?id=CVE-2023-40730 Référence CVE CVE-2023-40731 https://www.cve.org/CVERecord?id=C

Official advisory
03

Patch and workaround

Operational remediation based on structured source evidence.

Status
?Patch availability is based on structured fixed-version fields and authoritative update references. If no fix is verified, check the vendor advisory before making a change.
Patch available
Affected
Desigo CC family V5.0; Desigo CC family V5.1; Desigo CC family V6; Desigo CC family V7; SENTRON powermanager
Fixed
7.21g
Action
Install the patch (available at https://support.industry.siemens.com/cs/ww/en/view/109825787/), which can be applied to all released versions
Workaround
No verified workaround is recorded. If business-safe, reduce exposure to the affected interface and allow only trusted sources until authoritative guidance is available.
04

Evidence and provenance

Published 13 Sept 2023 · Last source change 27 Aug 2025, 20:32 UTC · CWE-787 · Out-of-bounds Write

CVE recordCVE.org · 5.1
CVSS sourceCNA
EPSS source
?The date BlackTree first stored a score for this CVE from the daily FIRST EPSS feed.
FIRST · tracked since 2026-08-14
European sourceENISA EUVD · EUVD-2023-44561
Product sourceVendor CSAF · Siemens ProductCERT
Remediation sourceVendor CSAF · Siemens ProductCERT
CWE sourceCNA
NVD statusNVD modified after enrichment

Core structured fields are present and their contributing authorities are shown above.

Material change intelligence

What changed after publication

View recent updates →
  1. Vendor guidanceAuthoritative vendor guidance changed from authoritative remediation link to authoritative remediation link.
    Before
    authoritative remediation link
    After
    authoritative remediation link
    SICK PSIRT ↗
Material fields only · duplicate refreshes suppressed · history retained for the configured operational retention period
CVE published
Fixed release or patch reference recorded
ENISA EUVD · EUVD-2023-44561↗Vendor CSAF · Siemens ProductCERT↗CVE authority or vendor reference↗Official CVE record (CNA and ADP data)↗NVD record↗
Technical terms and abbreviations used in this report
CVE
Common Vulnerabilities and Exposures: the public identifier for one disclosed vulnerability.
CVSS
Common Vulnerability Scoring System: a technical severity framework; it is not patching priority by itself.
EPSS
Exploit Prediction Scoring System: FIRST's estimate of the probability that exploitation activity will be observed in the next 30 days; it is a forecast, not confirmation.
CWE
Common Weakness Enumeration: the standard category describing the underlying software or hardware weakness.
CNA
CVE Numbering Authority: an organisation authorised to assign and publish CVE records.
CISA ADP
Cybersecurity and Infrastructure Security Agency Authorized Data Publisher: structured enrichment added to a CVE record.
NVD
National Vulnerability Database: NIST's enrichment service for CVE records.
CERT / CSIRT
A computer security incident response team that publishes warnings or coordinates incident response.
PoC
Proof of concept: public material that demonstrates or helps reproduce exploitation.
CSAF
Common Security Advisory Framework: a machine-readable format for security advisories.
LoTL
Living off the land: abuse of legitimate tools or system functions during an attack.
Free version - for non-commercial use only.CVE-2023-3935 · cve.blacktree.nl