WAGO Indsutrial-Managed-Switches up to 02.63 check_cookie stack-based overflow

Summaryinfo

A vulnerability classified as critical has been found in WAGO Indsutrial-Managed-Switches up to 02.63. Impacted is the function check_cookie. This manipulation causes stack-based overflow. This vulnerability appears as CVE-2025-41732. The attack may be initiated remotely. There is no available exploit. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability classified as critical was found in WAGO Indsutrial-Managed-Switches up to 02.63. Affected by this vulnerability is the function check_cookie. The manipulation with an unknown input leads to a stack-based overflow vulnerability. The CWE definition for the vulnerability is CWE-121. A stack-based buffer overflow condition is a condition where the buffer being overwritten is allocated on the stack (i.e., is a local variable or, rarely, a parameter to a function). As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

An unauthenticated remote attacker can abuse unsafe sscanf calls within the check_cookie() function to write arbitrary data into fixed-size stack buffers which leads to full device compromise.

The weakness was presented by Daniel Hulliger as VDE-2025-095. The advisory is shared at certvde.com. This vulnerability is known as CVE-2025-41732 since 04/16/2025. The exploitation appears to be easy. The attack can be launched remotely. The exploitation doesn't need any form of authentication. It demands that the victim is doing some kind of user interaction. Technical details are known, but no exploit is available.

Upgrading to version 02.64 eliminates this vulnerability.

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2025-202414). Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Vendor

• WAGO

Name

• Indsutrial-Managed-Switches

Version

• 02.0
• 02.1
• 02.2
• 02.3
• 02.4
• 02.5
• 02.6
• 02.7
• 02.8
• 02.9
• 02.10
• 02.11
• 02.12
• 02.13
• 02.14
• 02.15
• 02.16
• 02.17
• 02.18
• 02.19
• 02.20
• 02.21
• 02.22
• 02.23
• 02.24
• 02.25
• 02.26
• 02.27
• 02.28
• 02.29
• 02.30
• 02.31
• 02.32
• 02.33
• 02.34
• 02.35
• 02.36
• 02.37
• 02.38
• 02.39
• 02.40
• 02.41
• 02.42
• 02.43
• 02.44
• 02.45
• 02.46
• 02.47
• 02.48
• 02.49
• 02.50
• 02.51
• 02.52
• 02.53
• 02.54
• 02.55
• 02.56
• 02.57
• 02.58
• 02.59
• 02.60
• 02.61
• 02.62
• 02.63

License

• commercial

CPE 2.3info

• 🔒
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CPE 2.2info

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Exploitinginfo

Threat Intelligenceinfo

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Entryinfo

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

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