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Fencer Vulns
high 8.1

CVE-2026-79625 json

Improper Synchronization in Monitoring in CODESYS Control Runtime

published 2026-09-30 40 d ago modified 2026-09-30 39 d ago also EUVD-2026-89729

cvss
8.1
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 13%
public exploits
0
none known

Summary

Affected products do not properly synchronize access to their monitoring functionality. When multiple clients send concurrent requests, this may lead to incorrect reads or writes, or to corruption of internal memory structures. An authenticated remote attacker with monitoring access can exploit this issue to cause incorrect data processing or a denial-of-service condition.

Patch / fix

  • CODESYS Control RTE (SL) 3.5.22.40
  • CODESYS Control RTE (for Beckhoff CX) SL 3.5.22.40
  • CODESYS Control Win (SL) 3.5.22.40
  • CODESYS Runtime Toolkit 3.5.22.40
  • CODESYS Safety SIL2 3.5.22.40
  • CODESYS HMI (SL) 3.5.22.40
  • CODESYS Development System 3 3.5.22.40
  • CODESYS Control for BeagleBone SL 4.23.0.0
  • CODESYS Control for emPC-A/iMX6 SL 4.23.0.0
  • CODESYS Control for IOT2000 SL 4.23.0.0
  • CODESYS Control for Linux ARM SL 4.23.0.0
  • CODESYS Control for Linux SL 4.23.0.0
  • CODESYS Control for PFC100 SL 4.23.0.0
  • CODESYS Control for PFC200 SL 4.23.0.0
  • CODESYS Control for PLCnext SL 4.23.0.0
  • CODESYS Control for Raspberry Pi SL 4.23.0.0
  • CODESYS Control for WAGO Touch Panels 600 SL 4.23.0.0
  • CODESYS Virtual Control SL 4.23.0.0

CISA SSVC

Exploitation
none
Automatable
no
Technical impact
partial
Assessed
40 d ago

Exploit prediction

0.23% chance of exploitation in the next 30 days, higher than 13% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 4.0 7.2 CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:H/VA:H/SC:N/SI:N/SA:N
CNA 3.1 8.1 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H
CNA 4.0 7.2 CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Affected products

  • CODESYS Control RTE (SL)
  • CODESYS Control RTE (for Beckhoff CX) SL
  • CODESYS Control Win (SL)
  • CODESYS Runtime Toolkit
  • CODESYS Safety SIL2
  • CODESYS HMI (SL)
  • CODESYS Development System 3
  • CODESYS Control for BeagleBone SL
  • CODESYS Control for emPC-A/iMX6 SL
  • CODESYS Control for IOT2000 SL
  • CODESYS Control for Linux ARM SL
  • CODESYS Control for Linux SL
  • CODESYS Control for PFC100 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 Virtual Control SL

Classification

Weakness
  • CWE-362 Concurrent Execution using Shared Resource with Improper Synchronization

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.