{"id":82626,"date":"2026-07-28T15:46:36","date_gmt":"2026-07-28T12:16:36","guid":{"rendered":"https:\/\/afaghhosting.net\/blog\/cve-2026-4648-insufficient-encryption-level-in-casfid-servicios-tecnologicos-nfc-wristbands\/"},"modified":"2026-07-28T15:46:36","modified_gmt":"2026-07-28T12:16:36","slug":"cve-2026-4648-insufficient-encryption-level-in-casfid-servicios-tecnologicos-nfc-wristbands","status":"publish","type":"post","link":"https:\/\/afaghhosting.net\/blog\/cve-2026-4648-insufficient-encryption-level-in-casfid-servicios-tecnologicos-nfc-wristbands\/","title":{"rendered":"CVE-2026-4648 &#8211; Insufficient Encryption Level in CasfID Servicios Tecnol\u00f3gicos NFC Wristbands"},"content":{"rendered":"<p>CVE ID :CVE-2026-4648<\/p>\n<p>  Published : July 28, 2026, 12:16 p.m. | 23\u00a0minutes ago<\/p>\n<p>  Description :Use of an insecure cryptographic algorithm in the cashless payment system using NFC wristbands from CasfID Servicios Tecnol\u00f3gicos S.L.U. (version used at Resurrection Fest 2025), which employs cards based on MIFARE Classic technology (FM11RF08S). The cryptographic weakness of the authentication algorithm allows an attacker to retrieve access keys using techniques known as Backdoored Nested Attack, read the wristband\u2019s entire contents, and clone its credentials onto a compatible rewritable card. Exploitation of this vulnerability could enable the impersonation of other attendees, the fraudulent use of the balance associated with their wristbands, and financial losses for both the affected users and the event organizers.<\/p>\n<p>  Severity: 6.8 | MEDIUM<\/p>\n<p>  Visit the link for more details, such as CVSS details, affected products, timeline, and more&#8230;\u00a0<\/p>\n","protected":false},"excerpt":{"rendered":"<p>CVE ID :CVE-2026-4648 Published : July 28, 2026, 12:16 p.m. | 23\u00a0minutes ago Description :Use of an insecure cryptographic algorithm in the cashless payment system using NFC wristbands from CasfID Servicios Tecnol\u00f3gicos S.L.U. (version used at Resurrection Fest 2025), which employs cards based on MIFARE Classic technology (FM11RF08S). The cryptographic weakness of the authentication algorithm &hellip;<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[26],"tags":[],"class_list":["post-82626","post","type-post","status-publish","format-standard","hentry","category-vulnerability"],"_links":{"self":[{"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/posts\/82626","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/comments?post=82626"}],"version-history":[{"count":0,"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/posts\/82626\/revisions"}],"wp:attachment":[{"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/media?parent=82626"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/categories?post=82626"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/tags?post=82626"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}