Home/CVE/An unauthenticated, remote attacker can disrupt existing communication channels between CODESYS products by guessing a v
CVE

CVE-2022-22517

An unauthenticated, remote attacker can disrupt existing communication channels between CODESYS products by guessing a v

An unauthenticated, remote attacker can disrupt existing communication channels between CODESYS products by guessing a valid channel ID and injecting packets. This results in the communication channel to be closed.

HIGH · CVSS 7.5 EPSS 0.00443
Schedule remediation
  • CVSS base score ≥ 7.0
Sigma rules1 YARA rules0
⬡

Weakness Classification

CWE-330Use of Insufficiently Random Values
CWE-334Small Space of Random Values
▤

Affected Products & Versions

21
codesys control for beaglebone sl< 4.5.0.0
codesys control for beckhoff cx9020< 4.5.0.0
codesys control for empc-a\/imx6 sl< 4.5.0.0
codesys control for iot2000 sl< 4.5.0.0
codesys control for linux sl< 4.5.0.0
codesys control for pfc100 sl< 4.5.0.0
codesys control for pfc200 sl< 4.5.0.0
codesys control for plcnext sl< 4.5.0.0
◈

Sigma Hunt Rules

1
Exact rules name this CVE ID. Product rules name an affected product in their title. Related rules cover techniques used by actors who exploited this CVE. Showing the most relevant matches; the complete related set is on the full drill-down.
productmediumAzure Application Gateway Modified or Deleted
▣

Scoring & Timeline

7.5
HIGH · CVSS v3.1 · info@cert.vde.com
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD07 Apr 2022 · 07:15 PM
CVSS VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
⚑

Vendor Advisories

2
cisa-csafcisa-csaf-csaf_files-OT-white-2025-icsa-25-273-04
cisa-csafcisa-csaf-csaf_files-OT-white-2026-icsa-26-076-01
🔗

References & Sources

1
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
https://customers.codesys.com/index.php?eID=dumpFile&t=f&f=17091&token=c450f8bbbd838c647d102f359356386c6ea5aeca&download=Vendor Advisory
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