{"id":"DEBIAN-CVE-2026-42477","details":"A heap-based out-of-bounds read vulnerability in RWObj_Reader::read in the OBJ file parser in Open CASCADE Technology (OCCT) V8_0_0_rc5 allows user-assisted attackers to cause a denial of service or obtain sensitive information by persuading a victim to open a crafted OBJ file. The issue occurs because Standard_ReadLineBuffer::ReadLine() can return a 1-byte buffer for a minimal OBJ line, and RWObj_Reader::read() calls pushIndices(aLine + 2) without validating the buffer length.","modified":"2026-09-14T17:03:12.647598488Z","published":"2026-05-01T15:16:43.737Z","upstream":["CVE-2026-42477"],"references":[{"type":"ADVISORY","url":"https://security-tracker.debian.org/tracker/CVE-2026-42477"}],"affected":[{"package":{"name":"opencascade","ecosystem":"Debian:12","purl":"pkg:deb/debian/opencascade?arch=source&distro=bookworm"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["7.6.3+dfsg1-7","7.6.3+dfsg1-7.1","7.7.1+dfsg1-1~exp1","7.7.1+dfsg1-1~exp2","7.8.1+dfsg1-1","7.8.1+dfsg1-1~exp1","7.8.1+dfsg1-2","7.8.1+dfsg1-3","7.8.1+dfsg1-4~exp1","7.8.1+dfsg1-5","7.8.1+dfsg1-6","7.8.1+dfsg1-7","7.9.1+dfsg-1~exp1","7.9.1+dfsg-1~exp2","7.9.2+dfsg-1","7.9.2+dfsg-2","7.9.2+dfsg-3","7.9.2+dfsg-4","7.9.2+dfsg-5"],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-42477.json"}},{"package":{"name":"opencascade","ecosystem":"Debian:13","purl":"pkg:deb/debian/opencascade?arch=source&distro=trixie"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["7.8.1+dfsg1-3","7.8.1+dfsg1-4~exp1","7.8.1+dfsg1-5","7.8.1+dfsg1-6","7.8.1+dfsg1-7","7.9.1+dfsg-1~exp1","7.9.1+dfsg-1~exp2","7.9.2+dfsg-1","7.9.2+dfsg-2","7.9.2+dfsg-3","7.9.2+dfsg-4","7.9.2+dfsg-5"],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-42477.json"}},{"package":{"name":"opencascade","ecosystem":"Debian:14","purl":"pkg:deb/debian/opencascade?arch=source&distro=forky"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["7.8.1+dfsg1-3","7.8.1+dfsg1-4~exp1","7.8.1+dfsg1-5","7.8.1+dfsg1-6","7.8.1+dfsg1-7","7.9.1+dfsg-1~exp1","7.9.1+dfsg-1~exp2","7.9.2+dfsg-1","7.9.2+dfsg-2","7.9.2+dfsg-3","7.9.2+dfsg-4","7.9.2+dfsg-5"],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-42477.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:H"}]}