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Vulnerability record · CVE-2019-18858 · published 20 November 2019

CVE-2019-18858: Codesys control for beaglebone classic buffer overflow vulnerability

Codesys · Control For Beaglebone

CODESYS 3 web server before 3.5.15.20, as distributed with CODESYS Control runtime systems, has a Buffer Overflow.

9.8 CVSS 3.1 Critical EPSS 1.9% · top 20.6% CWE-120 · Classic buffer overflow
9.8CVSS 3.1 base score, v2 7.5
1.9%EPSS exploitation probability, 30 days
NoNot in CISA KEV
14Affected product versions listed by NVD
4References, 2 tagged exploit
17 Jun 2026Last modified by NVD

Description

CODESYS 3 web server before 3.5.15.20, as distributed with CODESYS Control runtime systems, has a Buffer Overflow.

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected products

14 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://customers.codesys.com/fileadmin/data/customers/security/2019/Advisory2019-10_CDS-68341.pdf Vendor Advisory
https://www.tenable.com/security/research/tra-2019-48 ExploitThird Party Advisory
https://customers.codesys.com/fileadmin/data/customers/security/2019/Advisory2019-10_CDS-68341.pdf Vendor Advisory
https://www.tenable.com/security/research/tra-2019-48 ExploitThird Party Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

9.8CVE-2020-10245Codesys control for beaglebone out-of-bounds write vulnerabilityCODESYS V3 web server before 3.5.15.40, as used in CODESYS Control runtime systems, has a buffer overflow.EPSS 2.5%9.8CVE-2019-13548Codesys control for beaglebone stack-based buffer overflow vulnerabilityCODESYS V3 web server, all versions prior to 3.5.14.10, allows an attacker to send specially crafted http or https requests which could cause a stack…EPSS 5.8%8.8CVE-2023-6357Codesys control for beaglebone sl os command injection vulnerabilityA low-privileged remote attacker could exploit the vulnerability and inject additional system commands via file system libraries which could give the…EPSS 0.96%8.8CVE-2018-25048Codesys control for beaglebone path traversal vulnerabilityThe CODESYS runtime system in multiple versions allows an remote low privileged attacker to use a path traversal vulnerability to access and modify a…EPSS 1.0%8.8CVE-2019-9008Codesys control for beaglebone incorrect permission assignment vulnerabilityAn issue was discovered in 3S-Smart CODESYS V3 through 3.5.12.30. A user with low privileges can take full control over the runtime.EPSS 1.9%7.8CVE-2020-12069Pilz pmc vulnerabilityIn CODESYS V3 products in all versions prior V3.5.16.0 containing the CmpUserMgr, the CODESYS Control runtime system stores the online communication …EPSS 0.16%7.5CVE-2022-30791Codesys control for beaglebone uncontrolled resource consumption vulnerabilityIn CmpBlkDrvTcp of CODESYS V3 in multiple versions an uncontrolled ressource consumption allows an unauthorized attacker to block new TCP connections…EPSS 0.87%7.5CVE-2022-30792Codesys control for beaglebone uncontrolled resource consumption vulnerabilityIn CmpChannelServer of CODESYS V3 in multiple versions an uncontrolled ressource consumption allows an unauthorized attacker to block new communicati…EPSS 0.87%

Source: NIST National Vulnerability Database (record CVE-2019-18858), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.