{"id":"CVE-2026-125070","kind":"vulnerability","aliases":["CVE-2026-125070"],"related":[],"title":"FFmpeg: crafted EA video file crashes decoder via NULL pointer","description":"FFmpeg through 9.0.2 contains a NULL pointer dereference vulnerability in tqi_decode_frame() in libavcodec/eatqi.c, which ignores init_get_bits() failure after an integer overflow. Attackers can supply a crafted EA file with a pIQT chunk carrying a 2^28-byte payload to crash the process, causing denial of service.","summary":"FFmpeg's EA TQI decoder ignores a failed bit-reader setup after an integer overflow, leaving a NULL pointer dereference. A crafted EA file with an oversized pIQT chunk crashes the process, causing denial of service.","severity":"medium","cvss":6.8,"epss":null,"exploited":false,"exploited_at":null,"products":[],"ecosystems":[],"tags":["ffmpeg","libavcodec","media-processing","package"],"not_affected_if":["no-ea-decoder-use","trusted-input-only"],"how_to_check":"- Check the FFmpeg version with `ffmpeg -version`; versions through `9.0.2` are described as affected.\n- Find services that decode untrusted media with libavcodec, such as transcoding pipelines or upload previews.","fix":null,"status":"open","published_at":"2026-11-09T19:16:49+00:00","first_seen_at":"2026-11-09T19:28:15+00:00","triaged_at":"2026-11-09T19:31:42+00:00","updated_at":"2026-11-09T19:31:42+00:00","category":"package","confidence":0.6,"triage":{"at":"2026-11-09T19:31:42Z","model":"claude-haiku-5-5","output":{"fix":"unknown","reach":"unknown","title":"FFmpeg: crafted EA video file crashes decoder via NULL pointer","impact":"low","summary":"FFmpeg's EA TQI decoder ignores a failed bit-reader setup after an integer overflow, leaving a NULL pointer dereference. A crafted EA file with an oversized pIQT chunk crashes the process, causing denial of service.","audience":"developers","category":"package","nicknames":[],"who_cares":["ffmpeg","libavcodec","media-processing"],"confidence":0.6,"fix_status":"unknown","needs_auth":"no","worst_case":"Decoder process crashes, causing denial of service","analyst_note":"Confirm the fixed FFmpeg version and whether the EA decoder is enabled by default, using the patch link on github.com and the NVD entry.","how_to_check":"- Check the FFmpeg version with `ffmpeg -version`; versions through `9.0.2` are described as affected.\n- Find services that decode untrusted media with libavcodec, such as transcoding pipelines or upload previews.","plain_action":"","product_name":"","needs_analyst":true,"not_affected_if":["trusted-input-only","no-ea-decoder-use"],"who_is_affected":"Any system that runs FFmpeg's libavcodec on media files from untrusted sources can be crashed by a crafted EA file. Systems that only decode trusted local media are much less exposed. unknown whether a specific fixed version is stated in the sources.","user_interaction":"unknown","product_ecosystem":"","needs_special_setup":"unknown","severity_if_unknown":"medium"},"cost_usd":0.00074,"input_tokens":4633,"output_tokens":553,"severity_before":"medium"},"analyst_status":null,"analyst_note":null,"search":"'-125070':13A,16A '-2026':12A,15A '2':98C '28':99C '9.0.2':62C 'attack':85C 'bit':32B,79C 'bit-read':31B 'byte':100C 'carri':96C 'caus':56B,106C 'chunk':52B,95C 'contain':63C 'craft':2A,45B,89C 'crash':6A,53B,103C 'cve':11A,14A 'decod':7A,27B,71C 'denial':57B,107C 'derefer':43B,67C 'ea':3A,25B,46B,90C 'fail':30B 'failur':80C 'ffmpeg':1A,17B,23B,60C 'file':5A,47B,91C 'frame':72C 'get':78C 'ignor':28B,76C 'init':77C 'integ':37B,83C 'leav':39B 'libavcodec':18B 'libavcodec/eatqi.c':74C 'media':20B 'media-process':19B 'null':9A,41B,65C 'overflow':38B,84C 'overs':50B 'packag':22B 'payload':101C 'piqt':51B,94C 'pointer':10A,42B,66C 'process':21B,55B,105C 'reader':33B 'servic':59B,109C 'setup':34B 'suppli':87C 'tqi':26B,70C 'via':8A 'video':4A 'vulner':68C","nicknames":[],"mitigations":[],"who_affected":"Any system that runs FFmpeg's libavcodec on media files from untrusted sources can be crashed by a crafted EA file. Systems that only decode trusted local media are much less exposed. unknown whether a specific fixed version is stated in the sources.","tier":"C","verified":{},"analyst_revisit_at":null,"fix_status":"none","audience":"developers","plain_action":null,"pkeys":[],"ptokens":[],"labels":["ffmpeg","libavcodec","mediaprocessing","medium","package"],"campaign_type":null,"search_a":"'-125070':13A,16A '-2026':12A,15A 'craft':2A 'crash':6A 'cve':11A,14A 'decod':7A 'ea':3A 'ffmpeg':1A 'file':5A 'null':9A 'pointer':10A 'via':8A 'video':4A","search_b":"'bit':32B 'bit-read':31B 'caus':56B 'chunk':52B 'craft':45B 'crash':53B 'decod':27B 'denial':57B 'derefer':43B 'ea':25B,46B 'fail':30B 'ffmpeg':17B,23B 'file':47B 'ignor':28B 'integ':37B 'leav':39B 'libavcodec':18B 'media':20B 'media-process':19B 'null':41B 'overflow':38B 'overs':50B 'packag':22B 'piqt':51B 'pointer':42B 'process':21B,55B 'reader':33B 'servic':59B 'setup':34B 'tqi':26B","search_c":"'2':98C '28':99C '9.0.2':62C 'attack':85C 'bit':79C 'byte':100C 'carri':96C 'caus':106C 'chunk':95C 'contain':63C 'craft':89C 'crash':103C 'decod':71C 'denial':107C 'derefer':67C 'ea':90C 'failur':80C 'ffmpeg':60C 'file':91C 'frame':72C 'get':78C 'ignor':76C 'init':77C 'integ':83C 'libavcodec/eatqi.c':74C 'null':65C 'overflow':84C 'payload':101C 'piqt':94C 'pointer':66C 'process':105C 'servic':109C 'suppli':87C 'tqi':70C 'vulner':68C","cause_entry":null,"cause_path":null,"disclosures_checked_at":null,"first_public_at":"2026-11-09T19:16:49+00:00","kev":null,"cvss_vector":"CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/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-2026-125070","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-125070","severity":null,"published_at":"2026-11-09T19:16:49+00:00","modified_at":"2026-11-09T19:16:49+00:00","first_seen_at":"2026-11-09T19:28:15+00:00","fetched_at":"2026-11-09T19:28:15+00:00","note":null}],"documents":[{"id":109199,"url":"https://github.com/FFmpeg/FFmpeg/commit/5d7b743bdfb724df21fd43a3d7f3258382eb578c","title":"Patch: github.com","kind":"other","source":"nvd","publisher":"vendor","text":null,"published_at":null,"relation":"fix","confidence":null,"note":"Patch: github.com"},{"id":109200,"url":"https://www.vulncheck.com/advisories/ffmpeg-through-9.0.2-null-pointer-dereference-in-ea-tqi-decoder","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"}],"disclosures":[],"exploit_sources":[],"notice":"Free to read, with fair use of about 60 pages a minute. For higher limits or API access: sales@infrastack.ai"}