Yandex Punto Switcher up to 4.5.0.583 RunDll32.exe unquoted search path

Summaryinfo

A vulnerability described as problematic has been identified in Yandex Punto Switcher up to 4.5.0.583. Affected is an unknown function in the library shell32.dll of the file RunDll32.exe. Such manipulation leads to unquoted search path. This vulnerability is uniquely identified as CVE-2026-25865. Local access is required to approach this attack. No exploit exists.

Detailsinfo

A vulnerability was found in Yandex Punto Switcher up to 4.5.0.583 and classified as critical. Affected by this issue is an unknown code block in the library shell32.dll of the file RunDll32.exe. The manipulation with an unknown input leads to a unquoted search path vulnerability. Using CWE to declare the problem leads to CWE-428. The product uses a search path that contains an unquoted element, in which the element contains whitespace or other separators. This can cause the product to access resources in a parent path. Impacted is confidentiality, integrity, and availability. CVE summarizes:

Punto Switcher through 4.5.0.583 contains an unquoted search path element vulnerability that allows local attackers to execute arbitrary code by exploiting the application's call to WinExec without a fully qualified path for RunDll32.exe when invoking shell32.dll Control_RunDLL input.dll. Attackers can place a malicious executable earlier in the search order to achieve arbitrary code execution in the context of the affected user.

The weakness was disclosed with Spektion Research Team. The advisory is shared for download at spektion.com. This vulnerability is handled as CVE-2026-25865 since 02/06/2026. The exploitation is known to be difficult. The attack needs to be approached locally. There are known technical details, but no exploit is available. The current price for an exploit might be approx. USD $0-$5k (estimation calculated on 06/19/2026). The MITRE ATT&CK project declares the attack technique as T1574.009.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

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Productinfo

Vendor

• Yandex

Name

• Punto Switcher

Version

• 4.5.0.583

CPE 2.3info

• 🔒

CPE 2.2info

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