{"id":"CVE-2026-103531","url":"https://www.cyber-defence.io/tools/cve/CVE-2026-103531","generatedAt":"2026-10-28T02:57:24.964Z","title":"Executing a manipulation of the argument type_attr can lead to stack-based buffer overflow.","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.","published":"2026-10-01T01:16:36.000Z","lastModified":"2026-10-06T01:16:33.000Z","status":"Deferred","sourceIdentifier":"cna@vuldb.com","cvss":{"version":"4.0","score":5.1,"severity":"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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/M"},"cwe":["CWE-119","CWE-121"],"affected":[],"epss":{"score":0.00194,"percentile":0.0904,"date":"2026-10-26","history":[{"date":"2026-10-02","score":0.00194,"percentile":0.08208}]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"low","text":"Lower severity and a low EPSS score (0.19%). Track it; it rarely justifies an emergency change on its own."},"changes":[{"kind":"new","label":"New CVE","at":"2026-10-01T01:16:36.000Z","detail":{"score":"5.1","severity":"MEDIUM","publishedAt":"2026-10-01T01:16:35.963Z"},"summary":"New CVE, medium severity (CVSS 5.1)."}],"references":[{"url":"https://github.com/OpenSC/OpenSC/","source":"cna@vuldb.com"},{"url":"https://github.com/OpenSC/OpenSC/commit/ad730304052937c32b4eb489a06835ac6123632c","source":"cna@vuldb.com"},{"url":"https://github.com/OpenSC/OpenSC/pull/3812","source":"cna@vuldb.com"},{"url":"https://vuldb.com/cve/CVE-2026-103531","source":"cna@vuldb.com"},{"url":"https://vuldb.com/submit/956910","source":"cna@vuldb.com"},{"url":"https://vuldb.com/vuln/412343","source":"cna@vuldb.com"},{"url":"https://vuldb.com/vuln/412343/cti","source":"cna@vuldb.com"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-103531","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}