VulnerabilityModified
CVE-2019-18858
CODESYS 3 web server before 3.5.15.20, as distributed with CODESYS Control runtime systems, has a Buffer Overflow.
CRITICAL 9.8EPSS 1.94%
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (1.94%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
CODESYS 3 web server before 3.5.15.20, as distributed with CODESYS Control runtime systems, has a Buffer Overflow.
- CVSS 3.1
- 9.8 CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 1.94% probability · 80th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-120
- Affected
- codesys/control for beaglebone · codesys/control for empc-a\/imx6 · codesys/control for iot2000 · codesys/control for linux · codesys/control for pfc100 · codesys/control for pfc200 · codesys/control for plcnext · codesys/control for raspberry pi · codesys/control rte · codesys/control runtime system toolkit · codesys/control win · codesys/embedded target visu toolkit · codesys/hmi · codesys/remote target visu toolkit
- Source
- cve@mitre.org
EPSS 1.9% 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://customers.codesys.com/fileadmin/data/customers/security/2019/Advisory2019-10_CDS-68341.pdfVendor Advisory
- https://www.tenable.com/security/research/tra-2019-48Exploit, Third Party Advisory
- https://customers.codesys.com/fileadmin/data/customers/security/2019/Advisory2019-10_CDS-68341.pdfVendor Advisory
- https://www.tenable.com/security/research/tra-2019-48Exploit, Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.