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Fencer Vulns
high 7.5

CVE-2024-5000 json

CODESYS: Incorrect calculation of buffer size can cause DoS on CODESYS OPC UA products

published 2024-06-04 2 y ago modified 2026-06-17 4 mo ago also EUVD-2024-46275

cvss
7.5
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.6%
EPSS 0.6% chance of exploitation in 30 days, percentile 47%
public exploits
0
none known

Summary

An unauthenticated remote attacker can use a malicious OPC UA client to send a crafted request to affected CODESYS products which can cause a DoS due to incorrect calculation of buffer size.

Patch / fix

  • CODESYS CODESYS Control for BeagleBone SL 4.12.0.0
  • CODESYS CODESYS Control for emPC-A/iMX6 SL 4.12.0.0
  • CODESYS CODESYS Control for IOT2000 SL 4.12.0.0
  • CODESYS CODESYS Control for Linux ARM SL 4.12.0.0
  • CODESYS CODESYS Control for Linux SL 4.12.0.0
  • CODESYS CODESYS Control for PFC100 SL 4.12.0.0
  • CODESYS CODESYS Control for PFC200 SL 4.12.0.0
  • CODESYS CODESYS Control for PLCnext SL 4.12.0.0
  • CODESYS CODESYS Control for Raspberry Pi SL 4.12.0.0
  • CODESYS CODESYS Control for WAGO Touch Panels 600 SL 4.12.0.0
  • CODESYS CODESYS Control RTE (for Beckhoff CX) SL 3.5.20.10
  • CODESYS CODESYS Control RTE (SL) 3.5.20.10
  • CODESYS CODESYS Runtime Toolkit 3.5.20.10
  • CODESYS CODESYS Control Win (SL) 3.5.20.10
  • CODESYS CODESYS HMI (SL) 3.5.20.10
  • codesys control_for_empc-a\/imx6_sl 4.12.0.0
  • codesys control_for_beaglebone_sl 4.12.0.0
  • codesys control_for_iot2000_sl 4.12.0.0
  • codesys control_for_linux_arm_sl 4.12.0.0
  • codesys control_for_linux_sl 4.12.0.0
  • codesys control_for_pfc200_sl 4.12.0.0
  • codesys control_for_plcnext_sl 4.12.0.0
  • codesys control_for_raspberry_pi_sl 4.12.0.0
  • codesys control_for_wago_touch_panels_600_sl 4.12.0.0
  • codesys control_rte_\(for_beckhoff_cx\)_sl 3.5.20.10
  • codesys control_rte_\(sl\) 3.5.20.10
  • codesys control_win_\(sl\) 3.5.20.10
  • codesys runtime_toolkit 3.5.20.10
  • codesys hmi_\(sl\) 3.5.20.10

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 7.5

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 SSVC

Exploitation
none
Automatable
yes
Technical impact
partial
Assessed
2 y ago

Exploit prediction

0.57% chance of exploitation in the next 30 days, higher than 47% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Affected products

  • CODESYS CODESYS Control for BeagleBone SL
  • CODESYS CODESYS Control for emPC-A/iMX6 SL
  • CODESYS CODESYS Control for IOT2000 SL
  • CODESYS CODESYS Control for Linux ARM SL
  • CODESYS CODESYS Control for Linux SL
  • CODESYS CODESYS Control for PFC100 SL
  • CODESYS CODESYS Control for PFC200 SL
  • CODESYS CODESYS Control for PLCnext SL
  • CODESYS CODESYS Control for Raspberry Pi SL
  • CODESYS CODESYS Control for WAGO Touch Panels 600 SL
  • CODESYS CODESYS Control RTE (for Beckhoff CX) SL
  • CODESYS CODESYS Control RTE (SL)
  • CODESYS CODESYS Runtime Toolkit
  • CODESYS CODESYS Control Win (SL)
  • CODESYS CODESYS HMI (SL)
  • codesys control_for_empc-a\/imx6_sl
  • codesys control_for_beaglebone_sl
  • codesys control_for_iot2000_sl
  • codesys control_for_linux_arm_sl
  • codesys control_for_linux_sl
  • codesys control_for_pfc200_sl
  • codesys control_for_plcnext_sl
  • codesys control_for_raspberry_pi_sl
  • codesys control_for_wago_touch_panels_600_sl
  • codesys control_rte_\(for_beckhoff_cx\)_sl
  • codesys control_rte_\(sl\)
  • codesys control_win_\(sl\)
  • codesys runtime_toolkit
  • codesys hmi_\(sl\)

Classification

Weakness
  • CWE-131 Incorrect Calculation of Buffer Size

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.