---
id: CVE-2025-13763
title: >-
  Multiple uses of uninitialized variables were found in libopensc that may lead
  to information disclosure or application crash
summary: >-
  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
  res…
severity: medium
cvss: 5.7
cvssVector: 'CVSS:3.1/AV:P/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:H'
cwe:
  - CWE-457
published: '2026-04-23'
updated: '2026-06-25'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2025-13763'
references:
  - url: 'https://access.redhat.com/security/cve/CVE-2025-13763'
    label: secalert@redhat.com
  - url: 'https://bugzilla.redhat.com/show_bug.cgi?id=2417581'
    label: secalert@redhat.com
  - url: 'https://github.com/OpenSC/OpenSC/security/advisories/GHSA-2v44-fq35-98vv'
    label: secalert@redhat.com
  - url: 'https://github.com/OpenSC/OpenSC/wiki/CVE-2025-13763'
    label: secalert@redhat.com
  - url: 'https://github.com/OpenSC/OpenSC/security/advisories/GHSA-2v44-fq35-98vv'
    label: 134c704f-9b21-4f2e-91b3-4a467353bcc0
tags:
  - nvd
epss: 0.00176
epssPercentile: 0.06385
ingestedAt: '2026-06-29T13:24:34.827Z'
---

## Overview

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

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.