CODESYS Development System up to 3.5.20.10 Project File deserialization

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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6.9$0-$5k0.00

Summaryinfo

A vulnerability was found in CODESYS Development System. It has been classified as critical. Affected is an unknown function of the component Project File Handler. Performing a manipulation results in deserialization. This vulnerability is cataloged as CVE-2025-41700. It is possible to initiate the attack remotely. There is no exploit available. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability, which was classified as critical, was found in CODESYS Development System. This affects an unknown code block of the component Project File Handler. The manipulation with an unknown input leads to a deserialization vulnerability. CWE is classifying the issue as CWE-502. The product deserializes untrusted data without sufficiently verifying that the resulting data will be valid. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

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.

The weakness was shared by Mengyuxia as VDE-2025-101. The advisory is shared at certvde.com. This vulnerability is uniquely identified as CVE-2025-41700 since 04/16/2025. The exploitability is told to be easy. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. It demands that the victim is doing some kind of user interaction. Neither technical details nor an exploit are publicly available.

Upgrading to version 3.5.21.40 eliminates this vulnerability.

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2025-199974). Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Vendor

Name

Version

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.0
VulDB Meta Temp Score: 6.9

VulDB Base Score: 6.3
VulDB Temp Score: 6.0
VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA Base Score: 7.8
CNA Vector (CERTVDE): 🔒

CVSSv2info

AVACAuCIA
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Deserialization
CWE: CWE-502 / CWE-20
CAPEC: 🔒
ATT&CK: 🔒

Physical: Partially
Local: Yes
Remote: Yes

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: Development System 3.5.21.40

Timelineinfo

04/16/2025 CVE reserved
12/01/2025 +229 days Advisory disclosed
12/01/2025 +0 days VulDB entry created
12/01/2025 +0 days VulDB entry last update

Sourcesinfo

Advisory: VDE-2025-101
Researcher: Mengyuxia
Status: Confirmed

CVE: CVE-2025-41700 (🔒)
GCVE (CVE): GCVE-0-2025-41700
GCVE (VulDB): GCVE-100-333849
EUVD: 🔒

Entryinfo

Created: 12/01/2025 14:38
Updated: 12/01/2025 15:10
Changes: 12/01/2025 14:38 (65), 12/01/2025 15:10 (1)
Complete: 🔍
Cache ID: 216::103

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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