OpenSC up to 0.26.x USB stack-based overflow

Summaryinfo

A vulnerability marked as critical has been reported in OpenSC up to 0.26.x. This vulnerability affects unknown code of the component USB Handler. Performing a manipulation results in stack-based overflow. This vulnerability is known as CVE-2025-49010. The attack may be carried out on the physical device. No exploit is available. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability, which was classified as problematic, was found in OpenSC up to 0.26.x. This affects an unknown code of the component USB Handler. The manipulation with an unknown input leads to a stack-based overflow vulnerability. CWE is classifying the issue as 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). This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

OpenSC is an open source smart card tools and middleware. Prior to version 0.27.0, an attacker with physical access to the computer at the time user or administrator uses a token can cause a stack-buffer-overflow write in GET RESPONSE. The attack requires crafted USB device or smart card that would present the system with specially crafted responses to the APDUs. This issue has been patched in version 0.27.0.

The advisory is shared at github.com. This vulnerability is uniquely identified as CVE-2025-49010 since 05/29/2025. The exploitability is told to be difficult. An attack has to be approached locally. No form of authentication is needed for exploitation. Neither technical details nor an exploit are publicly available.

The vulnerability scanner Nessus provides a plugin with the ID 321602 (SUSE SLES16 Security Update : opensc (SUSE-SU-2026:22126-1)), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 0.27.0 eliminates this vulnerability.

The vulnerability is also documented in the vulnerability database at Tenable (321602). Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Name

• OpenSC

Version

• 0.1
• 0.2
• 0.3
• 0.4
• 0.5
• 0.6
• 0.7
• 0.8
• 0.9
• 0.10
• 0.11
• 0.12
• 0.13
• 0.14
• 0.15
• 0.16
• 0.17
• 0.18
• 0.19
• 0.20
• 0.21
• 0.22
• 0.23
• 0.24
• 0.25
• 0.26

License

• open-source

Website

• Product: https://github.com/OpenSC/OpenSC/

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Entryinfo

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

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