{"id":74331,"date":"2025-11-26T04:46:09","date_gmt":"2025-11-26T01:16:09","guid":{"rendered":"https:\/\/afaghhosting.net\/blog\/cve-2025-66263-unauthenticated-arbitrary-file-read-via-null-byte-injection\/"},"modified":"2025-11-26T04:46:09","modified_gmt":"2025-11-26T01:16:09","slug":"cve-2025-66263-unauthenticated-arbitrary-file-read-via-null-byte-injection","status":"publish","type":"post","link":"https:\/\/afaghhosting.net\/blog\/cve-2025-66263-unauthenticated-arbitrary-file-read-via-null-byte-injection\/","title":{"rendered":"CVE-2025-66263 &#8211; Unauthenticated Arbitrary File Read via Null Byte Injection"},"content":{"rendered":"<p>CVE ID : CVE-2025-66263<\/p>\n<p>Published :  Nov. 26, 2025, 1:16 a.m. | 14\u00a0minutes ago<\/p>\n<p>Description : Unauthenticated Arbitrary File Read via Null Byte Injection in DB Electronica Telecomunicazioni S.p.A. Mozart FM Transmitter versions 30, 50, 100, 300, 500, 1000, 2000, 3000, 3500, 6000, 7000 allows an attacker to perform Null byte injection in download_setting.php allows reading arbitrary files.<br \/>\nThe `\/var\/tdf\/download_setting.php` endpoint constructs file paths by concatenating user-controlled `$_GET[&#8216;filename&#8217;]` with a forced `.tgz` extension. Running on PHP 5.3.2 (pre-5.3.4), the application is vulnerable to null byte injection (%00), allowing attackers to bypass the extension restriction and traverse paths. By requesting `filename=..\/..\/..\/..\/etc\/passwd%00`, the underlying C functions treat the null byte as a string terminator, ignoring the appended `.tgz` and enabling unauthenticated arbitrary file disclosure of any file readable by the web server user.<\/p>\n<p>Severity: 8.9 | HIGH<\/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-2025-66263 Published : Nov. 26, 2025, 1:16 a.m. | 14\u00a0minutes ago Description : Unauthenticated Arbitrary File Read via Null Byte Injection in DB Electronica Telecomunicazioni S.p.A. Mozart FM Transmitter versions 30, 50, 100, 300, 500, 1000, 2000, 3000, 3500, 6000, 7000 allows an attacker to perform Null byte injection in download_setting.php allows &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-74331","post","type-post","status-publish","format-standard","hentry","category-vulnerability"],"_links":{"self":[{"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/posts\/74331","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=74331"}],"version-history":[{"count":0,"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/posts\/74331\/revisions"}],"wp:attachment":[{"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/media?parent=74331"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/categories?post=74331"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/tags?post=74331"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}