Home/CVE/A remote, unauthenticated attacker can send a specific crafted HTTP or HTTPS requests causing a buffer over-read resulti
CVE

CVE-2022-22519

A remote, unauthenticated attacker can send a specific crafted HTTP or HTTPS requests causing a buffer over-read resulti

A remote, unauthenticated attacker can send a specific crafted HTTP or HTTPS requests causing a buffer over-read resulting in a crash of the webserver of the CODESYS Control runtime system.

HIGH · CVSS 7.5 EPSS 0.00782
Schedule remediation
  • CVSS base score ≥ 7.0
Sigma rules0 YARA rules0
⬡

Weakness Classification

CWE-125Out-of-bounds Read
CWE-126Buffer Over-read
▤

Affected Products & Versions

18
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
▣

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=17094&token=2fb188e2213c74194e81ba61ff99f1c68602ba4d&download=Vendor Advisory
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