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Fencer Vulns
high 7.3

CVE-2023-3670 json

Codesys: Vulnerability in CODESYS Development System and CODESYS Scripting

published 2023-07-28 3 y ago modified 2026-06-17 4 mo ago also EUVD-2023-44313

cvss
7.3
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.2%
EPSS 0.2% chance of exploitation in 30 days, percentile 9%
public exploits
0
none known

Summary

In CODESYS Development System 3.5.9.0 to 3.5.17.0 and CODESYS Scripting 4.0.0.0 to 4.1.0.0 unsafe directory permissions would allow an attacker with local access to the workstation to place potentially harmful and disguised scripts that could be executed by legitimate users.

Patch / fix

  • CODESYS CODESYS Development System 3.5.17.0
  • CODESYS CODESYS Scripting 4.1.0.0

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

cisa ICSA-26-076-01 updated cvss 7.3

CODESYS in Festo Automation Suite

  • CODESYS Development System 3.0 Festo Automation Suite 2.8.0.137, Festo Automation Suite < 2.8.0.138 CODESYS Development System 3.5.16.10 Festo Automation Suite 2.8.0.137, Festo Automation Suite < 2.8.0.138
    affected: mitigation
  • Festo Automation Suite 2.8.0.138 CODESYS Development System 3.5.21.20
    fixed

Facts from CISA's republication of the vendor's own advisory (CSAF); the linked advisory is the authoritative source. CISA notification · csaf

cisa ICSA-26-020-02 updated cvss 7.3

Schneider Electric devices using CODESYS Runtime

  • Schneider Electric Easy Harmony HMIET6/HMIFT6 Magelis HMIGXU series <2.0_HF2
    affected: vendor fix se.com
  • Schneider Electric Easy Modicon M310 <3.1.5.82
    affected: vendor fix, mitigation se.com
  • Schneider Electric Harmony (Formerly Magelis) HMIGK/HMIGTO/HMIGTU/HMIGTUX/HMISTU series <6.3_HF3
    affected: fixed in v6.3
  • Schneider Electric Harmony iPC series Vijeo Designer runtime <6.3_SP2 Schneider Electric Harmony P6 series Vijeo Designer runtime <6.3_SP2
    affected: fixed in v6.3 se.com
  • Schneider Electric HMISCU Controller <6.3.1
    affected: fixed in v6.3.1, mitigation se.com
  • Schneider Electric Magelis XBT series
    affected: no fix planned
  • Schneider Electric Modicon Controller LMC058
    affected: mitigation
  • Schneider Electric Modicon Controller M241 <5.2.11.18 Schneider Electric Modicon Controller M251 <5.2.11.18
    affected: fixed in v2.2, mitigation se.com
show 6 more
  • Schneider Electric Modicon Controller M258
    affected: mitigation
  • Schneider Electric Modicon Controller M262 <5.2.8.12
    affected: fixed in v2.2, mitigation se.com
  • Schneider Electric PacDrive 3 Controllers: LMC Eco/Pro/Pro2 <1.76.14.1
    affected: fixed in V2.2, mitigation se.com
  • Schneider Electric SoftSPS embedded in EcoStruxure Machine Expert <2.2
    affected: vendor fix, mitigation se.com
  • Schneider Electric Vijeo Designer embedded in EcoStruxure Machine Expert <6.3.1
    affected: fixed in v6.3.1 se.com
  • Schneider Electric Easy Modicon M310 3.1.5.82 Schneider Electric Harmony (Formerly Magelis) HMIGK/HMIGTO/HMIGTU/HMIGTUX/HMISTU series iPC series with Vijeo Designer runtime 6.3_HF3 Schneider Electric Harmony iPC series Vijeo Designer runtime 6.3_SP2 Schneider Electric Harmony P6 series Vijeo Designer runtime 6.3_SP2 Schneider Electric HMISCU Controller 6.3.1 Schneider Electric Modicon Controller M241 5.2.11.18
    +6 more products
    Schneider Electric Modicon Controller M251 5.2.11.18 Schneider Electric Modicon Controller M262 5.2.8.12 Schneider Electric PacDrive 3 Controllers: LMC Eco/Pro/Pro2 1.76.14.1 Schneider Electric SoftSPS embedded in EcoStruxure Machine Expert 2.2 Schneider Electric Vijeo Designer Basic 2.0_HotFix_2 Schneider Electric Vijeo Designer embedded in EcoStruxure Machine Expert 6.3.1
    fixed

Facts from CISA's republication of the vendor's own advisory (CSAF); the linked advisory is the authoritative source. CISA notification · csaf

CISA SSVC

Exploitation
none
Automatable
no
Technical impact
partial
Assessed
2 y ago

Exploit prediction

0.20% chance of exploitation in the next 30 days, higher than 9% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.1 7.3 CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H

Affected products

  • CODESYS CODESYS Development System
  • CODESYS CODESYS Scripting

Classification

Weakness
  • CWE-668 Exposure of Resource to Wrong Sphere

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.