Multiple uses of uninitialized variables were found in libopensc that may lead to information disclosure or application crash. An attack requires a crafted USB device or smart card that would present the system with specially crafted responses to the APDUs.
The vulnerability has a CVSS score of 5.7, indicating a medium severity level. This classification is crucial as it suggests that while the vulnerability may not be easily exploitable, the potential consequences of a successful attack could be significant, including unauthorized access to sensitive information.
Currently, the vulnerability is classified as 'Awaiting Analysis', indicating that further investigation is needed to fully understand its impact and potential exploitability. Organizations should monitor this situation closely.
Given the nature of the vulnerability and the potential for exploitation through physical access, organizations should prioritize patching immediately to prevent unauthorized access and mitigate the risks associated with this issue.
Vulnerability Details
The vulnerability in libopensc arises from multiple uses of uninitialized variables, which can lead to information disclosure or application crashes. The attack vector is physical, requiring access to the system through a crafted USB device or smart card, making it essential for organizations to secure physical access to their systems.
The CVSS vector for this vulnerability is CVSS:3.1/AV:P/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:H, indicating that the attack complexity is high, and no privileges or user interaction are required for exploitation.
The vulnerability was published on April 23, 2026, and has been classified under CWE-457, indicating the issue relates to the use of uninitialized variables.
Technical Analysis
The root cause of this vulnerability stems from the improper handling of uninitialized variables in the libopensc software. This oversight can lead to unpredictable behavior, including application crashes and potential information disclosure.
The attack vector consists of physical access, indicating that an attacker would need to connect a malicious USB device or smart card to the system. The complexity of the attack is considered high, as it requires specific conditions to be met for successful exploitation.
No privileges are required for exploitation, as the vulnerability can be triggered without any user interaction. The impact on confidentiality is high, while there is no impact on integrity, and availability is also rated as high, emphasizing the necessity of immediate action.
Risk & Impact Analysis
The risk to organizations includes potential information disclosure and application crashes, which could disrupt services and harm the organization's reputation. Given the medium severity level and the high impact on confidentiality and availability, organizations should address this vulnerability in their priority patch cycle.
The attacker's ability to exploit this vulnerability through physical access adds to the risk profile, as it may allow unauthorized individuals to gain access to sensitive data. The blast radius potential is significant, especially for organizations that handle sensitive information.
Organizations should prioritize patching immediately to mitigate risks associated with this vulnerability. The urgency is heightened by the potential for physical access exploitation, which can lead to severe consequences.
Exploitation Status
Signal | Status |
|---|---|
Known Exploit | No |
Public PoC | No |
Actively Exploited | No |
Ransomware Use | No |
Affected Versions
All versions of libopensc prior to vendor patch are affected by this vulnerability. It is crucial for organizations to verify their versions and apply the necessary updates.
Mitigation & Remediation
Organizations should check for available patches and update their version of libopensc. If a patch is unavailable, implementing configuration hardening and restricting physical access can mitigate potential risks. For further guidance on effective remediation strategies, consider engaging with a penetration testing service to identify similar weaknesses.
Detection Guidance
Monitoring for unusual application behavior, especially in systems using libopensc, can provide early detection of exploitation attempts. Log indicators should include unexpected crashes or access attempts from unauthorized USB devices.
AppSecure Threat Intelligence Insight
The long-term significance of CVE-2025-13763 highlights the need for robust security practices in managing software dependencies and physical access controls. This vulnerability serves as a reminder that even medium-severity issues can present substantial risks if not addressed timely.
Security teams should focus on continuous monitoring and vulnerability management to adapt to evolving threats. For insights on vulnerability management, organizations can refer to vulnerability management programs that can help identify and mitigate similar risks.
Furthermore, adopting a proactive approach through regular security assessments and engaging in penetration testing methodologies will enhance an organization's resilience against future vulnerabilities.
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
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