{"apiVersion":"1.0","identifier":"CVE-2026-73433","description":"A flaw was found in GStreamer gst-plugins-good (avidemux). When parsing FUJIFILM metadata in an AVI strd chunk, gst_avi_demux_parse_strd() decrements a remaining-length counter by fixed offsets (98 and 10 bytes) without verifying sufficient data remains. For crafted strd payloads of exactly 106 or 107 bytes, the counter underflows to a very large unsigned value, causing subsequent null-terminated string scanning to read far beyond the allocated heap buffer. Date-format normalization may also write beyond the buffer end. Confirmed impacts include heap out-of-bounds read, out-of-bounds write, heap information disclosure (adjacent data appearing in parsed metadata), and application crash/denial of service. The avidemux element is auto-plugged by playbin, decodebin, and gst-discoverer, so opening or previewing a crafted AVI is sufficient to trigger the issue. Fixed upstream in gst-plugins-good 1.28.6 (GStreamer-SA-2026-0072).","publishedAt":"2026-08-12T20:17:56","lastModifiedAt":"2026-08-19T21:17:36","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-73433","cvssScore":6.6,"cvssVector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:H","epssProbability":0.00131,"riskScore":0.67,"affectedProduct":"gst-plugins-good","affectedVersions":"<1.28.6","vulnerabilityType":"Library","operatingSystems":["Linux"],"links":{"self":"https://www.redsauce.net/api/cves/CVE-2026-73433","webPages":{"es":"https://www.redsauce.net/es/cves/CVE-2026-73433","en":"https://www.redsauce.net/en/cves/CVE-2026-73433","fr":"https://www.redsauce.net/fr/cves/CVE-2026-73433","pt":"https://www.redsauce.net/pt/cves/CVE-2026-73433","de":"https://www.redsauce.net/de/cves/CVE-2026-73433","sk":"https://www.redsauce.net/sk/cves/CVE-2026-73433","el":"https://www.redsauce.net/el/cves/CVE-2026-73433"},"source":"https://nvd.nist.gov/vuln/detail/CVE-2026-73433"}}