CVE-2026-103531
Publication date 2 October 2026
Last updated 2 October 2026
Ubuntu priority
Description
A flaw has been found in OpenSC up to 0.27.1. The impacted element is the function setcos_construct_fci_44 of the file src/libopensc/card-setcos.c. Executing a manipulation of the argument type_attr can lead to stack-based buffer overflow. The attack can be launched remotely. This patch is called ad730304052937c32b4eb489a06835ac6123632c. It is best practice to apply a patch to resolve this issue.
Status
| Package | Ubuntu Release | Status |
|---|---|---|
| opensc | 26.04 LTS resolute |
Needs evaluation
|
| 24.04 LTS noble |
Needs evaluation
|
|
| 22.04 LTS jammy |
Needs evaluation
|
|
| 20.04 LTS focal |
Needs evaluation
|
|
| 18.04 LTS bionic |
Needs evaluation
|
|
| 16.04 LTS xenial |
Needs evaluation
|
Severity score breakdown
CVSS version:
Base score
5.1 · Medium
Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N
Base score
5.5 · Medium
Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:L
References
Other references
- https://www.cve.org/CVERecord?id=CVE-2026-103531
- https://github.com/OpenSC/OpenSC/pull/3812
- https://github.com/OpenSC/OpenSC/
- https://github.com/OpenSC/OpenSC/commit/ad730304052937c32b4eb489a06835ac6123632c
- https://vuldb.com/cve/CVE-2026-103531
- https://vuldb.com/submit/956910
- https://vuldb.com/vuln/412343
- https://vuldb.com/vuln/412343/cti