{"id":"CVE-2026-29508","kind":"vulnerability","aliases":["CVE-2026-29508"],"related":[],"title":"ReadyMedia: crafted DFF audio file overflows stack, enabling remote code execution","description":"ReadyMedia (formerly MiniDLNA) versions 1.3.0 through 1.3.3 contain a stack-based buffer overflow vulnerability that allows remote attackers to corrupt stack memory by crafting a malicious DFF audio file with an oversized PROP chunk size value that is used unvalidated to allocate a variable-length stack array and read file data into it. Attackers can place a crafted DFF file in a directory monitored by ReadyMedia to trigger automatic parsing via inotify, achieving remote code execution on unprotected builds or denial of service on hardened builds with stack protections.","summary":"ReadyMedia (formerly MiniDLNA) 1.3.0 through 1.3.3 has a stack buffer overflow when parsing DFF audio files because an oversized PROP chunk size is trusted without validation. An attacker who places a crafted DFF file in a monitored directory can run code on unprotected builds, or crash the service on builds with stack protections.","severity":"high","cvss":8.8,"epss":null,"exploited":false,"exploited_at":null,"products":[{"name":"readymedia","fixed":[],"affected":">= 1.3.0, <= 1.3.3","ecosystem":"vendor"}],"ecosystems":[],"tags":["linux","media-server","minidlna","package","readymedia","self-hosted"],"not_affected_if":["no-monitored-directory-writable","version-outside-1.3.0-1.3.3"],"how_to_check":"- Run `minidlnad -V` or check your package manager: versions 1.3.0 through 1.3.3 are in range (a distro build may carry a backport; check the distro tracker).\n- Open minidlna.conf and list every media_dir path; check who can write to them (SMB/NFS shares, upload paths, local accounts). Exploitation needs the attacker to place a file there.\n- Also check if you run ASUS routers (VulnCheck links an ASUS fixed firmware for the RT-AX86U series) or other NAS/router firmware that bundles MiniDLNA; the sources do not confirm other devices.","fix":"No upstream ReadyMedia fixed version is published in the sources I could read (1.3.3 is the latest release I found). VulnCheck links ASUS fixed firmware for affected ASUS routers. Until a fix: restrict write access to every media_dir.","status":"open","published_at":"2026-11-02T21:17:31+00:00","first_seen_at":"2026-11-02T21:35:41+00:00","triaged_at":"2026-11-02T21:37:05+00:00","updated_at":"2026-11-02T21:38:42+00:00","category":"package","confidence":0.6,"triage":{"at":"2026-11-02T21:37:05Z","model":"claude-haiku-5-5","output":{"fix":"unknown","reach":"network","title":"ReadyMedia: crafted DFF audio file overflows stack, enabling remote code execution","impact":"high","summary":"ReadyMedia (formerly MiniDLNA) 1.3.0 through 1.3.3 has a stack buffer overflow when parsing DFF audio files because an oversized PROP chunk size is trusted without validation. An attacker who places a crafted DFF file in a monitored directory can run code on unprotected builds, or crash the service on builds with stack protections.","audience":"businesses","category":"package","nicknames":[],"who_cares":["readymedia","minidlna","media-server","linux","self-hosted"],"confidence":0.6,"fix_status":"unknown","needs_auth":"unknown","worst_case":"code runs on the media server when a file is parsed","analyst_note":"Confirm the fixed version and the exact trigger conditions at the NVD entry and the VulnCheck advisory linked in the sources.","how_to_check":"- Check the installed version with `minidlnad -V` or the package manager and see whether it falls in `1.3.0` through `1.3.3`\n- Look for a monitored media directory that other users or services can write to","plain_action":"","needs_analyst":true,"not_affected_if":["version-outside-1.3.0-1.3.3","no-monitored-directory-writable"],"who_is_affected":"ReadyMedia (formerly MiniDLNA) 1.3.0 through 1.3.3 is exposed when it watches a directory that an attacker can write DFF files into, because inotify triggers parsing automatically. Systems that do not run ReadyMedia, or run a version outside that range, are not affected by this description. The sources do not say which distributions ship which builds.","user_interaction":"no","needs_special_setup":"unknown","severity_if_unknown":"high"},"cost_usd":0.000742,"input_tokens":4265,"output_tokens":632,"severity_before":"high"},"analyst_status":"done","analyst_note":"Confirm the fixed version and the exact trigger conditions at the NVD entry and the VulnCheck advisory linked in the sources.","search":"'-2026':13A,16A '-29508':14A,17A '1.3.0':32B,86C '1.3.3':34B,88C 'achiev':156C 'alloc':124C 'allow':98C 'array':130C 'attack':56B,100C,137C 'audio':4A,43B,110C 'automat':152C 'base':93C 'buffer':38B,94C 'build':72B,78B,162C,169C 'chunk':49B,116C 'code':10A,69B,158C 'contain':89C 'corrupt':102C 'craft':2A,60B,106C,141C 'crash':74B 'cve':12A,15A 'data':134C 'denial':164C 'dff':3A,42B,61B,109C,142C 'directori':66B,146C 'enabl':8A 'execut':11A,159C 'file':5A,44B,62B,111C,133C,143C 'former':30B,83C 'harden':168C 'host':28B 'inotifi':155C 'length':128C 'linux':19B 'malici':108C 'media':21B 'media-serv':20B 'memori':104C 'minidlna':23B,31B,84C 'monitor':65B,147C 'overflow':6A,39B,95C 'overs':47B,114C 'packag':24B 'pars':41B,153C 'place':58B,139C 'prop':48B,115C 'protect':81B,172C 'read':132C 'readymedia':1A,18A,25B,29B,82C,149C 'remot':9A,99C,157C 'run':68B 'self':27B 'self-host':26B 'server':22B 'servic':76B,166C 'size':50B,117C 'stack':7A,37B,80B,92C,103C,129C,171C 'stack-bas':91C 'trigger':151C 'trust':52B 'unprotect':71B,161C 'unvalid':122C 'use':121C 'valid':54B 'valu':118C 'variabl':127C 'variable-length':126C 'version':85C 'via':154C 'vulner':96C 'without':53B","nicknames":[],"mitigations":[],"who_affected":"ReadyMedia (MiniDLNA) 1.3.0 through 1.3.3 is exposed when it monitors a directory an attacker can write a crafted DFF audio file into; inotify then parses the file automatically. This typically means NAS boxes, routers or Linux servers with a writable media share. Systems not running ReadyMedia, or with media folders only trusted users can write to, can skip it. Per the CVE, unprotected builds allow code execution; builds with stack protections crash instead.","tier":"B","verified":{},"analyst_revisit_at":null,"fix_status":"none","audience":"businesses","plain_action":null,"pkeys":["readymedia"],"ptokens":["readymedia"],"labels":["high","linux","mediaserver","minidlna","package","readymedia","selfhosted"],"first_public_at":"2026-11-02T21:17:31+00:00","kev":null,"cvss_vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/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/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","cvss_by":"disclosure@vulncheck.com","poc_count":0,"sources":[{"source":"nvd","external_id":"CVE-2026-29508","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-29508","severity":null,"published_at":"2026-11-02T21:17:31+00:00","modified_at":"2026-11-02T21:17:31+00:00","first_seen_at":"2026-11-02T21:35:41+00:00","fetched_at":"2026-11-02T21:35:41+00:00","note":null},{"source":"analyst","external_id":"CVE-2026-29508:1431","url":null,"severity":null,"published_at":"2026-11-02T21:38:42+00:00","modified_at":"2026-11-02T21:38:42+00:00","first_seen_at":"2026-11-02T21:38:42+00:00","fetched_at":"2026-11-02T21:38:42+00:00","note":"VulnCheck advisory (CNA) read: affects 1.3.0-1.3.3, credit Ivan Racic; references an ASUS fixed-firmware download but no upstream ReadyMedia fixed version is stated and I found no upstream release/commit after 1.3.3. Researcher blog and PoC links not visible in the text I could read; nothing verified."}],"documents":[{"id":53943,"url":"https://www.vulncheck.com/advisories/readymedia-stack-buffer-overflow-via-dff-parser","title":"Third-party advisory: www.vulncheck.com","kind":"advisory","source":"nvd","publisher":"research","text":null,"published_at":null,"relation":"advisory","confidence":null,"note":"Third-party advisory: www.vulncheck.com"}],"notice":"Free to read at a human pace. An API with keys and an MCP server are in preparation; early access: hello@infrastack.ai"}