CVE-2025-13763

Libopensc: opensc: multiple uses of uninitialized variable

MEDIUM
5.7
CVSS Score
Published: April 23, 2026 at 12:27 PM UTC
Updated: October 14, 2026 at 01:10 PM UTC
2 products affected across 2 vendorsEnterprise LinuxOpenSC

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Severity
MEDIUM5.7
Exploit prediction
EPSS 0.3%
SSVC
PoC

Description

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

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

0 ≤ v < 0.27.00
Affected range stops below 0.27.0, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

SSVC — Action Prioritization

SSVCPoCNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

5.7MEDIUMredhat
Attack Vector
PHYSICAL
Complexity
HIGH
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
NONE
Availability
HIGH
Vector?

Quick Info

StatusAWAITING ANALYSIS
CWE
CWE-457

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