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PatchSiren cyber security CVE debrief

CVE-2022-47387 CODESYS CVE debrief

CVE-2022-47387 is a high-severity stack-based out-of-bounds write in the CmpTraceMgr component used by CODESYS products in Festo Automation Suite. According to the CISA republication of the vendor advisory, an authenticated remote attacker may be able to trigger denial of service, memory overwriting, or remote code execution. The advisory was initially published on 2026-02-26 and revised on 2026-03-17.

Vendor
CODESYS
Product
FESTO
CVSS
HIGH 8.8
CISA KEV
Not listed in stored evidence
Original CVE published
2023-07-11
Original CVE updated
2026-01-20
Advisory published
2023-07-11
Advisory updated
2026-01-20

Who should care

OT/ICS operators, Festo Automation Suite administrators, CODESYS users, and defenders responsible for engineering workstations or remote-access paths that allow authenticated users to reach CODESYS components.

Technical summary

The advisory describes a stack-based out-of-bounds write in CmpTraceMgr. The source item lists affected Festo Automation Suite/CODESYS combinations including Festo Automation Suite versions before 2.8.0.138 with bundled CODESYS Development System 3.0 or 3.5.16.10, and Festo Automation Suite 2.8.0.138 with CODESYS Development System 3.5.21.20 as an external component. The published CVSS 3.1 vector is AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H (8.8 HIGH).

Defensive priority

High

Recommended defensive actions

  • Inventory all Festo Automation Suite deployments and identify any bundled or separately installed CODESYS components.
  • Upgrade to the latest patched CODESYS release from the official CODESYS website and follow the vendor installation/update guidance.
  • Update Festo Automation Suite to 2.8.0.138 or later and apply connector updates released by Festo.
  • Restrict authenticated remote access to engineering and OT management interfaces to only necessary users and segments.
  • Monitor CODESYS and Festo security advisories and validate updates in a controlled OT maintenance window before broad rollout.

Evidence notes

This debrief is based on the CISA CSAF record ICSA-26-076-01, which republishes the Festo advisory FSA-202601 titled 'CODESYS in Festo Automation Suite.' The source description states that an authenticated remote attacker can exploit a stack-based out-of-bounds write in CmpTraceMgr to cause denial of service, memory overwriting, or remote code execution. The remediation text says that starting with Festo Automation Suite 2.8.0.138, CODESYS is no longer bundled and should be downloaded and installed separately, with updates applied from the official CODESYS site. The prompt's vendor/product mapping is low confidence and should be validated against the advisory title and affected product matrix.

Sources and references

Verified primary and authoritative sources

  • CVE-2022-47387 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2022-47387

    CVE Program - Official CVE Program record with source-provided CVE metadata.

  • CVE-2022-47387 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2022-47387

    NIST National Vulnerability Database - Official NIST NVD detail page and source-specific vulnerability assessment.

Supplemental references

  • Source item URL

    Unverified legacy reference

    URL: https://raw.githubusercontent.com/cisagov/CSAF/develop/csaf_files/OT/white/2026/icsa-26-076-01.json

    cisa_csaf

  • Source reference

    Unverified legacy reference

    URL: https://festo.csaf-tp.certvde.com/.well-known/csaf/white/2026/fsa-202601.json

    Reference

  • Source reference

    Unverified legacy reference

    URL: https://certvde.com/en/advisories/vendor/festo/

    Reference

  • Source reference

    Unverified legacy reference

    URL: https://www.festo.com/psirt

    Reference

  • Source reference

    Unverified legacy reference

    URL: https://certvde.com/en/advisories/VDE-2025-108

    Reference

  • Source reference

    Unverified legacy reference

    URL: https://www.cve.org/CVERecord?id=CVE-2025-2595

    Reference

  • Source reference

    Unverified legacy reference

    URL: https://www.cisa.gov/news-events/ics-advisories/icsa-26-076-01

    Reference

  • Source reference

    Unverified legacy reference

    URL: https://www.cisa.gov/news-events/ics-alerts/ics-alert-10-301-01

    Reference

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.