CVE-2024-5000
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.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (0.57%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
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.
- CVSS 3.1
- 7.5 HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- EPSS
- 0.57% probability · 47th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-131
- Source
- info@cert.vde.com
EPSS 0.6% since 26 October 2026; no change recorded yet. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
References
- https://cert.vde.com/en/advisories/VDE-2024-026
- https://customers.codesys.com/index.php?eID=dumpFile&t=f&f=18355&token=e3e5a937ce72602bec39718ddc2f4ba6d983ccd1&download=
- https://cert.vde.com/en/advisories/VDE-2024-026
- https://customers.codesys.com/index.php?eID=dumpFile&t=f&f=18355&token=e3e5a937ce72602bec39718ddc2f4ba6d983ccd1&download=
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.