Medium [CVE-2025-13763] Libopensc: opensc: multiple uses of uninitialized variable
This medium-severity Red Hat Linux advisory covers CVE-2025-13763 affecting Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 7, Red Hat Enterprise Linux 8.
Aggregated and source-linked by VulniPulse. Data sources, validation and limitations.
VulniPulse record published
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 responses to the APDUs Physical access is required for a successful attack of this vulnerability which increases the complexity and lowers the severity of this flaw hence it was rated Low.
Red Hat severity: Low — CVSS 5.7 (CVSS:3.1/AV:P/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:H). Affected Red Hat products: Red Hat Enterprise Linux 10; Red Hat Enterprise Linux 7; Red Hat Enterprise Linux 8; Red Hat Enterprise Linux 9.
Red Hat does not currently list a fixing RHSA for this CVE.
Affected products named by the advisory: Red Hat package: opensc.
Is CVE-2025-13763 exploited?
No exploitation is reported in the sources VulniPulse tracks: CVE-2025-13763 is not in the CISA KEV catalog (checked ) and this advisory does not report exploitation. That is not proof the vulnerability cannot be exploited.
How do I fix CVE-2025-13763?
The advisory VulniPulse tracks names no fixed release. Follow Red Hat's guidance for workarounds and updates.
Confirm against the vendor advisory before you patch.
Affected versions
No affected-version range was extracted from the source record. The vendor advisory is authoritative. Check it before change work.
Official advisory · high-confidence parse· fetched 4 days ago·verify at source
Fixed versions
No fixed release is recorded yet. That does not prove no patch exists. Confirm against the vendor advisory.
Official advisory · high-confidence parse· fetched 4 days ago·verify at source
Mitigation checklist
- To mitigate this issue, avoid connecting untrusted USB devices or smart cards to systems running affected versions of Red Hat Enterprise Linux. This operational control reduces the risk of an attacker presenting a specially crafted device to exploit the uninitialized variable flaws in `libopensc`.
Official advisory · high-confidence parse· fetched 4 days ago·verify at source
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