PatchSiren

PatchSiren cyber security CVE debrief

CVE-2020-12068 Festo CVE debrief

CVE-2020-12068 is a privilege-escalation issue in CODESYS Development System before 3.5.16.0. The source advisory states that CODESYS WebVisu and CODESYS Remote TargetVisu are susceptible. In the CISA CSAF republication of Festo advisory FSA-202601, the exposure is also tied to Festo Automation Suite installations that bundled CODESYS before version 2.8.0.138.

Vendor
Festo
Product
Unknown
CVSS
MEDIUM 6.5
CISA KEV
Not listed in stored evidence
Original CVE published
2025-09-30
Original CVE updated
2025-11-13
Advisory published
2025-09-30
Advisory updated
2025-11-13

Who should care

Operators and administrators running Festo Automation Suite or standalone CODESYS Development System deployments, especially OT/ICS teams using WebVisu or Remote TargetVisu. This is most relevant where older bundled installations or network-reachable engineering environments are present.

Technical summary

The supplied CVSS 3.1 vector indicates a network-reachable, low-complexity issue that requires no prior privileges and no user interaction, with limited confidentiality and integrity impact. The advisory text does not describe exploit mechanics, but it does identify privilege escalation in WebVisu and Remote TargetVisu on CODESYS Development System versions before 3.5.16.0. Festo’s remediation guidance says that from Festo Automation Suite 2.8.0.138 onward, CODESYS is no longer bundled and customers should install the latest patched CODESYS directly from official sources, while keeping the FAS connector updated.

Defensive priority

Medium; prioritize sooner in exposed OT environments or any site running affected CODESYS/Festo combinations.

Recommended defensive actions

  • Confirm whether any systems run CODESYS Development System before 3.5.16.0.
  • Check Festo Automation Suite deployments for versions before 2.8.0.138 that bundled CODESYS.
  • Upgrade to a patched CODESYS release from the official CODESYS website.
  • Apply the Festo Automation Suite connector updates as released by Festo.
  • Review exposure of WebVisu and Remote TargetVisu components on reachable systems.
  • Monitor vendor advisories and maintenance notices for follow-on fixes.

Evidence notes

All claims are drawn from the supplied CISA CSAF source item and its referenced official links. The source text explicitly names CODESYS Development System before 3.5.16.0, WebVisu, and Remote TargetVisu, and the remediation section states that Festo Automation Suite 2.8.0.138 stops bundling CODESYS. The source revision history shows an initial publication on 2026-02-26 and a CISA republication on 2026-03-17; these are advisory dates, not vulnerability creation dates. The vendor mapping in the prompt is low-confidence, so the debrief avoids asserting a vendor beyond what the source text supports.

Sources and references

Verified primary and authoritative sources

  • CVE-2020-12068 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2020-12068

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

  • CVE-2020-12068 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2020-12068

    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/2025/icsa-25-273-04.json

    cisa_csaf

  • Source reference

    Unverified legacy reference

    URL: https://www.cisa.gov/news-events/ics-advisories/icsa-25-273-04

    Reference

  • Source reference

    Unverified legacy reference

    URL: https://www.cisa.gov/uscert/ics/alerts/ICS-ALERT-10-301-01

    Reference

  • Source reference

    Unverified legacy reference

    URL: https://www.cisa.gov/resources-tools/resources/ics-recommended-practices

    Reference

  • Source reference

    Unverified legacy reference

    URL: https://www.cisa.gov/sites/default/files/publications/Cybersecurity_Best_Practices_for_Industrial_Control_Systems.pdf

    Reference

  • Source reference

    Unverified legacy reference

    URL: https://www.cisa.gov/topics/industrial-control-systems

    Reference

  • Source reference

    Unverified legacy reference

    URL: https://www.cisa.gov/uscert/sites/default/files/publications/emailscams0905.pdf

    Reference

  • Source reference

    Unverified legacy reference

    URL: https://www.cisa.gov/uscert/ncas/tips/ST04-014

    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.