Codesys Development System vulnerabilities

CVE-2026-44469 [HIGH] CWE-276 CVE-2026-44469: The affected product extracts installation files to a temporary directory with incorrect default per The affected product extracts installation files to a temporary directory with incorrect default permissions during administrative installation. A low-privileged local attacker can exploit a TOCTOU race condition with a practical time window to replace verified files with malicious ones before installation, resulting in local privilege escalation.

CVE-2026-44468 [HIGH] CWE-276 CVE-2026-44468: The affected product creates a directory with insecure default permissions during administrative ins The affected product creates a directory with insecure default permissions during administrative installation. This allows a low-privileged local attacker to modify a temporary file defining the components to be installed, enabling local privilege escalation by forcing the deployment of arbitrary components.

CVE-2023-3662 [HIGH] CWE-427 CVE-2023-3662: In CODESYS Development System versions from 3.5.17.0 and prior to 3.5.19.20 a vulnerability allows f In CODESYS Development System versions from 3.5.17.0 and prior to 3.5.19.20 a vulnerability allows for execution of binaries from the current working directory in the users context .

CVE-2023-3663 [HIGH] CWE-940 CVE-2023-3663: In CODESYS Development System versions from 3.5.11.20 and before 3.5.19.20 a missing integrity check In CODESYS Development System versions from 3.5.11.20 and before 3.5.19.20 a missing integrity check might allow an unauthenticated remote attacker to manipulate the content of notifications received via HTTP by the CODESYS notification server.

CVE-2023-37549 [MEDIUM] CVE-2023-37549: In multiple Codesys products in multiple versions, after successful authentication as a user, specif In multiple Codesys products in multiple versions, after successful authentication as a user, specific crafted network communication requests with inconsistent content can cause the CmpApp component to read internally from an invalid address, potentially leading to a denial-of-service condition. This vulnerability is different to CVE-2023-37545, CVE-2023-37

CVE-2023-37559 [MEDIUM] CVE-2023-37559: After successful authentication as a user in multiple Codesys products in multiple versions, specifi After successful authentication as a user in multiple Codesys products in multiple versions, specific crafted network communication requests with inconsistent content can cause the CmpAppForce component to read internally from an invalid address, potentially leading to a denial-of-service condition. This vulnerability is different to CVE-2023-37558

CVE-2023-37547 [MEDIUM] CVE-2023-37547: In multiple Codesys products in multiple versions, after successful authentication as a user, specif In multiple Codesys products in multiple versions, after successful authentication as a user, specific crafted network communication requests with inconsistent content can cause the CmpApp component to read internally from an invalid address, potentially leading to a denial-of-service condition. This vulnerability is different to CVE-2023-37545, CVE-2023-37

CVE-2023-37552 [MEDIUM] CWE-20 CVE-2023-37552: In multiple versions of multiple Codesys products, after successful authentication as a user, specif In multiple versions of multiple Codesys products, after successful authentication as a user, specific crafted network communication requests with inconsistent content can cause the CmpAppBP component to read internally from an invalid address, potentially leading to a denial-of-service condition. This vulnerability is different to CVE-2023-37553, CV

CVE-2023-37554 [MEDIUM] CVE-2023-37554: In multiple versions of multiple Codesys products, after successful authentication as a user, specif In multiple versions of multiple Codesys products, after successful authentication as a user, specific crafted network communication requests with inconsistent content can cause the CmpAppBP component to read internally from an invalid address, potentially leading to a denial-of-service condition. This vulnerability is different to CVE-2023-37552, CVE-2023-

CVE-2023-37550 [MEDIUM] CVE-2023-37550: In multiple Codesys products in multiple versions, after successful authentication as a user, specif In multiple Codesys products in multiple versions, after successful authentication as a user, specific crafted network communication requests with inconsistent content can cause the CmpApp component to read internally from an invalid address, potentially leading to a denial-of-service condition. This vulnerability is different to CVE-2023-37545, CVE-2023-37

CVE-2023-37548 [MEDIUM] CVE-2023-37548: In multiple Codesys products in multiple versions, after successful authentication as a user, specif In multiple Codesys products in multiple versions, after successful authentication as a user, specific crafted network communication requests with inconsistent content can cause the CmpApp component to read internally from an invalid address, potentially leading to a denial-of-service condition. This vulnerability is different to CVE-2023-37545, CVE-2023-37

CVE-2023-37558 [MEDIUM] CWE-20 CVE-2023-37558: After successful authentication as a user in multiple Codesys products in multiple versions, specifi After successful authentication as a user in multiple Codesys products in multiple versions, specific crafted network communication requests with inconsistent content can cause the CmpAppForce component to read internally from an invalid address, potentially leading to a denial-of-service condition. This vulnerability is different to CVE-2023-37559

CVE-2023-37545 [MEDIUM] CWE-20 CVE-2023-37545: In multiple Codesys products in multiple versions, after successful authentication as a user, specif In multiple Codesys products in multiple versions, after successful authentication as a user, specific crafted network communication requests with inconsistent content can cause the CmpApp component to read internally from an invalid address, potentially leading to a denial-of-service condition. This vulnerability is different to CVE-2023-37546, CVE-

CVE-2023-37546 [MEDIUM] CVE-2023-37546: In multiple Codesys products in multiple versions, after successful authentication as a user, specif In multiple Codesys products in multiple versions, after successful authentication as a user, specific crafted network communication requests with inconsistent content can cause the CmpApp component to read internally from an invalid address, potentially leading to a denial-of-service condition. This vulnerability is different to CVE-2023-37545, CVE-2023-37

CVE-2023-37553 [MEDIUM] CVE-2023-37553: In multiple versions of multiple Codesys products, after successful authentication as a user, specif In multiple versions of multiple Codesys products, after successful authentication as a user, specific crafted network communication requests with inconsistent content can cause the CmpAppBP component to read internally from an invalid address, potentially leading to a denial-of-service condition. This vulnerability is different to CVE-2023-37552, CVE-2023-

CVE-2023-37556 [MEDIUM] CVE-2023-37556: In multiple versions of multiple Codesys products, after successful authentication as a user, specif In multiple versions of multiple Codesys products, after successful authentication as a user, specific crafted network communication requests with inconsistent content can cause the CmpAppBP component to read internally from an invalid address, potentially leading to a denial-of-service condition. This vulnerability is different to CVE-2023-37552, CVE-2023-

CVE-2023-37555 [MEDIUM] CVE-2023-37555: In multiple versions of multiple Codesys products, after successful authentication as a user, specif In multiple versions of multiple Codesys products, after successful authentication as a user, specific crafted network communication requests with inconsistent content can cause the CmpAppBP component to read internally from an invalid address, potentially leading to a denial-of-service condition. This vulnerability is different to CVE-2023-37552, CVE-2023-

CVE-2023-37557 [MEDIUM] CWE-787 CVE-2023-37557: After successful authentication as a user in multiple Codesys products in multiple versions, specifi After successful authentication as a user in multiple Codesys products in multiple versions, specific crafted remote communication requests can cause the CmpAppBP component to overwrite a heap-based buffer, which can lead to a denial-of-service condition.

CVE-2023-37551 [MEDIUM] CWE-552 CVE-2023-37551: In multiple Codesys products in multiple versions, after successful authentication as a user, specia In multiple Codesys products in multiple versions, after successful authentication as a user, specially crafted network communication requests can utilize the CmpApp component to download files with any file extensions to the controller. In contrast to the regular file download via CmpFileTransfer, no filtering of certain file types is performed her

CVE-2023-3669 [LOW] CWE-307 CVE-2023-3669: A missing Brute-Force protection in CODESYS Development System prior to 3.5.19.20 allows a local att A missing Brute-Force protection in CODESYS Development System prior to 3.5.19.20 allows a local attacker to have unlimited attempts of guessing the password within an import dialog.