Buffer Overflow Affecting opensc/opensc package, versions [,0.27.0)
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-UNMANAGED-OPENSCOPENSC-17429026
- published23 Jun 2026
- disclosed29 May 2026
- creditNicholas Carlini
Introduced: 29 May 2026
CVE-2026-40528 (opens in a new tab)How to fix?
Upgrade opensc/opensc to version 0.27.0 or higher.
Overview
Affected versions of this package are vulnerable to Buffer Overflow in the do_key_value function when processing a crafted profile configuration file. An attacker can corrupt memory by supplying a specially crafted configuration file to the pkcs15-init utility, potentially leading to denial of service or unpredictable system behavior.