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TI-2023-27123 Aliases CVE-2023-49676GHSA-q4h3-rm8f-c8qr

CODESYS: Use after free vulnerability through corrupted project files

Priority LOW 24CWE-416Published · Updated

Key facts

Attack vector
Local
Privileges required
None
User interaction
Required
Attack complexity
Low
Impact type
Denial of service
Confidentiality · integrity · availability
None · None · High
Fix status
Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-416 and the CVSS impact.

Summary

An unauthenticated local attacker may trick a user to open corrupted project files to crash the system due to use after free vulnerability.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00178 7th percentileScored 2026-11-07
Fix Fixed CODESYS Development System V2.3 (CODESYS): 2.3.9.73

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
CODESYSCODESYS Development System V2.3before 2.3.9.732.3.9.73Patch availableCNA
  • CODESYS Development System V2.3 VendorCODESYS Affected before 2.3.9.73 Fixed in 2.3.9.73 Patch available CNA

Remediation

  • Fix · CNA CODESYS Development System V2.3 (CODESYS) Fixed in 2.3.9.73

Fixed in the same release

Records fixed by the same vendor advisory or release, as the CNA lists them.

  • Release ·

    CODESYS Development System V2.3 2.3.9.73

    2 records Highest priority Priority LOW 2 LOW

    Other records, highest priority first

    • TI-2023-27122 CODESYS: Out-of-bounds write through corrupted project filesPriority LOW 35
    Show all 2 records →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2023-49676
  2. 2026-10-03 Alias added: GHSA-q4h3-rm8f-c8qr

References

Other 1

  • TI-2021-12888 CODESYS Control Runtime system before 3.5.17.10 has a Heap-based Buffer Overflow. CVSS 3.1CRITICAL 9.8
  • TI-2019-10180 Stack-based buffer overflow in CODESYS V3 web server CVSS 3.1CRITICAL 9.8
  • TI-2021-13604 CODESYS V2 web server: crafted requests could trigger a null pointer dereference (DoS) CVSS 3.1HIGH 7.5
  • TI-2020-08257 CODESYS V3 web server before 3.5.15.40, as used in CODESYS Control runtime systems, has a buffer overflow. CVSS 3.1CRITICAL 9.8
  • TI-2019-13592 CODESYS 3 web server before 3.5.15.20, as distributed with CODESYS Control runtime systems, has a Buffer Overflow. CVSS 3.1CRITICAL 9.8
  • TI-2017-03937 Unrestricted file upload in 3S-Smart Software Solutions GmbH CODESYS Web Server CVSS 3.0CRITICAL 9.8
See all 155 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences