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TI-2025-01261 Aliases CVE-2025-1468GHSA-wvcq-jpw4-q2r3

CODESYS Control V3 - OPC UA Server Authentication bypass

Priority MEDIUM 40CWE-203Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
Information disclosure
Confidentiality · integrity · availability
High · None · None
Fix status
Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-203.

Summary

An unauthenticated remote attacker can gain access to sensitive information including authentication information when using CODESYS OPC UA Server with the non-default Basic128Rsa15 security policy.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00633 50th percentileScored 2026-11-08
Fix Fixed CODESYS Runtime Toolkit (CODESYS): 3.5.21.0

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
Yes
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 Runtime Toolkitbefore 3.5.21.03.5.21.0Patch availableCNA
  • CODESYS Runtime Toolkit VendorCODESYS Affected before 3.5.21.0 Fixed in 3.5.21.0 Patch available CNA

Remediation

  • Fix · CNA CODESYS Runtime Toolkit (CODESYS) Fixed in 3.5.21.0

Fixed in the same release

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

  • Release ·

    CODESYS Runtime Toolkit 3.5.21.0

    2 records Highest priority Priority MEDIUM 1 MEDIUM, 1 LOW

    Other records, highest priority first

    • TI-2025-00588 CODESYS Control V3 removable media path traversalPriority LOW 31
    Show all 2 records →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2025-1468
  2. 2026-10-03 Alias added: GHSA-wvcq-jpw4-q2r3
  3. 2026-10-25 EPSS moved to the 50th–90th percentile

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