CVE-2026-42477

NameCVE-2026-42477
DescriptionA 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.
SourceCVE (at NVD; CERT, ENISA, LWN, oss-sec, fulldisc, Debian ELTS, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
opencascade (PTS)bullseye7.5.1+dfsg1-2vulnerable
bookworm7.6.3+dfsg1-7vulnerable
trixie7.8.1+dfsg1-3vulnerable
forky, sid7.9.2+dfsg-4vulnerable

The information below is based on the following data on fixed versions.

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
opencascadesource(unstable)(unfixed)

Notes

https://gist.github.com/sgInnora/dfba083d04906283e9c92aea78e2d94a

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