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cpe:2.3:a:codesys:codesys:*:*:*:*:*:*:*:*

part: a version: * update: *

VendorCodesys (4a5dbd6f-1914-5b18-8641-403ab498c199)
ProductCodesys (ce2275e0-858a-5521-bade-0722e05594e3)
Edition*
Language*
Software edition*
Target software*
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NotesImported from gcve-enriched-dumps CVE data

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Vulnerability references

IdentifiercpeApplicabilitySubmitteddb.gcve.eu detailsRationale
CVE:CVE-2025-41700 vulnerable 2026-06-03 15:01:15.604848 CODESYS Development System - Deserialization of Untrusted Data
HIGH (7.8)
An unauthenticated attacker can trick a local user into executing arbitrary code by opening a deliberately manipulated CODESYS project file with a CODESYS development system. This arbitrary code is executed in the user context.
Published: 2025-12-01T10:02:47.312Z
Updated: 2025-12-01T13:59:26.310Z
Reference links
Imported from gcve-enriched-dumps CVE data
CVE:CVE-2021-34596 vulnerable 2026-06-03 14:44:45.796112 CODESYS V2 runtime: Access of Uninitialized Pointer may result in denial-of-service
MEDIUM (6.5)
A crafted request may cause a read access to an uninitialized pointer in CODESYS V2 Runtime Toolkit 32 Bit full and PLCWinNT prior to versions V2.4.7.56, resulting in a denial-of-service condition.
Published: 2021-10-26T09:55:54.408Z
Updated: 2024-09-16T22:40:47.921Z
Reference links
Imported from gcve-enriched-dumps CVE data
CVE:CVE-2021-34595 vulnerable 2026-06-03 14:44:45.794550 CODESYS V2 runtime: out-of-bounds read or write access may result in denial-of-service
HIGH (8.1)
A crafted request with invalid offsets may cause an out-of-bounds read or write access in CODESYS V2 Runtime Toolkit 32 Bit full and PLCWinNT prior to versions V2.4.7.56, resulting in a denial-of-service condition or local memory overwrite.
Published: 2021-10-26T09:55:52.868Z
Updated: 2024-09-17T03:42:53.986Z
Reference links
Imported from gcve-enriched-dumps CVE data
CVE:CVE-2021-34586 vulnerable 2026-06-03 14:44:45.745956 CODESYS V2 web server: crafted requests could trigger a null pointer dereference (DoS)
HIGH (7.5)
In the CODESYS V2 web server prior to V1.1.9.22 crafted web server requests may cause a Null pointer dereference in the CODESYS web server and may result in a denial-of-service condition.
Published: 2021-10-26T09:55:49.885Z
Updated: 2024-09-17T03:53:13.043Z
Reference links
Imported from gcve-enriched-dumps CVE data
CVE:CVE-2021-34585 vulnerable 2026-06-03 14:44:45.744474 CODESYS V2 web server: crafted requests could trigger a pointer dereference with an invalid address (DoS)
HIGH (7.5)
In the CODESYS V2 web server prior to V1.1.9.22 crafted web server requests can trigger a parser error. Since the parser result is not checked under all conditions, a pointer dereference with an invalid address can occur. This leads to a denial of service situation.
Published: 2021-10-26T09:55:48.273Z
Updated: 2024-09-16T21:58:06.631Z
Reference links
Imported from gcve-enriched-dumps CVE data
CVE:CVE-2021-34584 vulnerable 2026-06-03 14:44:45.742896 CODESYS V2 web server: crafted requests could trigger a buffer over-read (DoS)
CRITICAL (9.1)
Crafted web server requests can be utilised to read partial stack or heap memory or may trigger a denial-of- service condition due to a crash in the CODESYS V2 web server prior to V1.1.9.22.
Published: 2021-10-26T09:55:46.638Z
Updated: 2024-09-16T22:25:58.664Z
Reference links
Imported from gcve-enriched-dumps CVE data
CVE:CVE-2021-34583 vulnerable 2026-06-03 14:44:45.722069 CODESYS V2 web server: crafted requests could trigger a heap-based buffer overflow (DoS)
HIGH (7.5)
Crafted web server requests may cause a heap-based buffer overflow and could therefore trigger a denial-of- service condition due to a crash in the CODESYS V2 web server prior to V1.1.9.22.
Published: 2021-10-26T09:55:45.129Z
Updated: 2024-09-16T20:43:32.357Z
Reference links
Imported from gcve-enriched-dumps CVE data
CVE:CVE-2019-16265 vulnerable 2026-06-03 14:39:54.188680 Details available
CODESYS V2.3 ENI server up to V3.2.2.24 has a Buffer Overflow.
Published: 2019-10-25T16:34:57.000Z
Updated: 2024-08-05T01:10:41.592Z
Reference links
Imported from gcve-enriched-dumps CVE data
CVE:CVE-2019-13538 vulnerable 2026-06-03 14:39:42.831644 Details available
3S-Smart Software Solutions GmbH CODESYS V3 Library Manager, all versions prior to 3.5.16.0, allows the system to display active library content without checking its validity, which may allow the contents of manipulated libraries to be displayed or executed. The issue also exists for source libraries, but 3S-Smart Software Solutions GmbH strongly recommends distributing compiled libraries only.
Published: 2019-09-17T19:04:54.000Z
Updated: 2024-08-04T23:57:39.147Z
Reference links
Imported from gcve-enriched-dumps CVE data

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